Manitowoc Ice QF0400 manuale d’uso

Flake / Chiplet Model Ice Machines Flake Models QF0400/QF0800/ QF2200/QF2300 Chiplet Models QC0700 Ser vice Man ual Part Number 80-1214-3 07/03 Revised 8/2003[...]

W e reserve the right to mak e product impro v ements at any time . Specifications and design are subject t o change without n otice. Safety Notices As yo u work on a Flak e / Chiplet Series Ice Mach ine, be sure to pa y close attention to the safety notices in this manual. Disreg arding the notices ma y lead to serious injury and/or damage to the [...]

Part No. 80 -1214-3 1 T able of Contents Section 1 General Information Model Numb ers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 How to Read a Model Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Remote Condensing Unit . . . . . . . . . . . . . . . [...]

Table of Contents (continue d) 2 Part No. 80-1214-3 Ice Machine Head Section Wat er Supply and Drains . . . . . . . . . . . . . . . . . . . 2-9 Potable Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2- 9 Potable Water Inlet Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

Table of Contents (continue d) Part No. 80 -1214-3 3 Section 4 Ice Machine Sequence of Operation QF400/QC700/ QF800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Prior to Start-U p . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Initial Start-U p . .[...]

Table of Contents (continue d) 4 Part No. 80-1214-3 Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-46 Component Specif ications and Diagn ostics . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47 ICE/OFF/CLEAN Tog gle Switch . . . . . . . . . . . . . . . . . . . . . . . . [...]

Table of Contents (continue d) Part No. 80 -1214-3 5 Refrigerant Recove ry/Evacuation an d Recharging . . . . . . . . . . . . . . . . . . . . . . 7- 15 Refrigerant Re covery/Evacuat ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15 System Conta mination Clean -Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

Table of Contents (continue d) 6 Part No. 80-1214-3 Revised 8/2003[...]

Part No. 80 -1214-3 1-1 Section 1 General Inf ormation Model Numbers This manual cov ers the f ollowing models: How to Read a Model Number Remote Condensing Unit Accessories BIN CASTER Replaces standard legs. ICE BAGGER Maximiz e profits from bagged ice sales with this conv enient acc essor y . This stur dy unit rests o n the bin door frame, and ad[...]

General Information Section 1 1-2 Part No. 80-1214-3 Model/Serial Number Location These numbers are required when requesting inf or mation from y our local Manitow oc distributor , ser vice repr esentative , or Ma nitowoc Ice, Inc. The model and serial n umber are listed on the O WNER W ARRANTY RE GISTRA TION CAR D . The y are also listed on the MO[...]

Section 1 General Information Part No. 80 -1214-3 1-3 Owner W arranty R egistration Card GENERAL W arranty cov erage begins the da y the ice machine is installed. If the O WNER W ARRANTY REGISTRA TION CARD is not returned, Manitowoc will use the date of sale to the Manito woc Distrib utor as the first da y of warr anty cov erage for your ne w ice m[...]

General Information Section 1 1-4 Part No. 80-1214-3 THIS P AGE I NTENTIONALL Y LEFT BLANK Revised 8/2003[...]

Part No. 80 -1214-3 2-1 Section 2 Installation Instructions Ice Machine Dimensions QF400 AIR COOLED ICE MACHINE QC700/QF800 WATER COOLED ICE MACHINE QC700/QF800 AIR COO LED ICE MACHINE Important F ailure to follo w these in stallation guidelines ma y aff e ct w arranty cov erage . 26” (66 CM) 19” (48.2 CM) 32.5” (82.55 CM) 6” (15.24 CM) 7.2[...]

Installation Instr uctions Section 2 2-2 Part No. 80-1214-3 Ice Machine Head Section and Re mote Condensing Un it Dimensions QF2200/QF230 0 AND RFC2085/RF C2385 REMOTE CONDENSING UNIT SV1758 10.75” (27.3 CM) 14.5” (36.8 CM) 9.5” (24.1 CM) 14.5” (36.8 CM) 25.75” 34” (86.4 CM) 24.13” (53.7 CM) 30” (76.2 CM) 24.5” (62.23 CM) 2.25” [...]

Section 2 Installation Instructions Part No. 80 -1214-3 2-3 Location of Ice Machine The location selected f or the ice machine must meet the f ollowing criteria. If any of th ese criteria are not met, select another locat ion. • The locat ion must be fr ee of airborne and other contaminan ts. • The air temper ature must b e at least 45°F ( 7°[...]

Installation Instr uctions Section 2 2-4 Part No. 80-1214-3 Leveling the Ice Stora ge Bin 1. Screw the le v eling legs onto the bottom of the bin. 2. Scr ew the f oot of ea ch leg in as f ar as possible. 3. Move the bin into its final po sition. 4. Lev el the bin to assure that the bin door closes and seals proper ly . Use a lev e l on top of the b[...]

Section 2 Installation Instructions Part No. 80 -1214-3 2-5 Electrical Service GENERAL VO L T A G E The maximum allo wab le v oltage v ariation is ±10% of the rated v oltage on the ice machine model/serial numb er plate at start-up (when the electrical load is highest). FUSE/CIRCUIT BREAKER A separat e fuse/circuit break er must be pro vided f or [...]

Installation Instr uctions Section 2 2-6 Part No. 80-1214-3 Electrical Requirements Ice Machine Head Secti on Remote Condensing Unit Ice Machine Vo l t a g e Phase Cyc le Air -Cooled Remote Air-Cooled Wat e r C o o l e d Maximum Fuse/Circuit Breaker Minimum Circ uit Amps To t a l Circuit Amps Maximum Fuse/ Circuit Breaker Minimum Circuit Amps Maxim[...]

Section 2 Installation Instructions Part No. 80 -1214-3 2-7 Ice Machine Head Section El ectrical Wiring Connections QC700/QF800 ICE MACHINE HEAD SECTION 115/1/60 or 208 -230/1/60 230/1/50 QF2200 ICE MACHIN E HEAD SECTION 115/60/1 QF2300 ICE MACHIN E HEAD SECTION 115/60/1 ! Warning These diagr ams are not intended to show proper wire routing, wir e [...]

Installation Instr uctions Section 2 2-8 Part No. 80-1214-3 Remote Electrical Wiring Connections RFC2085 REMOTE CONDENSING UNIT 208-230/1/ 60 RFC2385 REMOTE CONDENSING UNIT 208-230/1/ 60 ! Warning These diagr ams are not intend ed to show prope r wire routing, wire sizing, disconnects , etc., only t he correct wire connection s. All electrical wor [...]

Section 2 Installation Instructions Part No. 80 -1214-3 2-9 Ice Machine Head Section W ater Supply and Drains P O TABLE W ATER SUPPLY Local water conditions ma y require treatm ent of the water to inhibit scale formation, filter se diment, and remov e chlorine odor and taste. P O TABLE W A TER INLET LINES F ollow these guidelines to install water i[...]

Installation Instr uctions Section 2 2-10 Part No. 80-1214-3 W A TER SUPPLY AND DRAIN LINE SIZING/CONNECTIONS T ypical W ater Supply Drain In stallation ! Caution Plumbing must conf or m to state and local codes . Locatio n W ater T emperature Water Pressure Ice Machine Fitting T ubing Siz e Up to Ic e Machine Fitting Ice Making W ater Inlet 45°F [...]

Section 2 Installation Instructions Part No. 80 -1214-3 2-11 Refrigeration Syst em Installation (QF2200/RFC2085 AND QF 2300/RFC2385 ONLY) USAGE WITH NON-MANITOWOC CONDENSING UNITS Manito woc Condensin g Units are specifically designed f or usage with a Manito woc Flak e/Chiplet Ice Machine Head Sections. Manitowoc Fl ake/Chiplet Ice Machines will n[...]

Installation Instr uctions Section 2 2-12 Part No. 80-1214-3 Refrigeration Line Set Installation GENERAL Refrigeration line set installations consist of v er tical and horizontal line set distances be tween the ice machin e and the condensing unit. The f ollowing guidelines , dra wings and calculation methods must be followed to assure proper oil r[...]

Section 2 Installation Instructions Part No. 80 -1214-3 2-13 C. SUCTION LINE OIL T RAPS 0 to 20 fe et (0 to 6.1 m) Rise: The ice machin e head section has one oil trap built in which allo ws fo r a maximum cond enser rise of 20 f eet (6.1 m) wit hout additional tr aps in the suction line . 21 to 35 fee t (6.4 to 10.7 m) Rise : The suction l ine req[...]

Installation Instr uctions Section 2 2-14 Part No. 80-1214-3 Step 4 Connecting the li ne set. T o pre v ent o xidation of the co pper , purge line set and condensing unit with dry nitrogen while brazing. Connect The Line Set T o The Ice Machin e Head Section The line set shut off v alves at the bac k of the ice machine must r emain closed and be pr[...]

Section 2 Installation Instructions Part No. 80 -1214-3 2-15 Step 5 Pressure T est and Ev acuate The Line Set and Remote Cond ensing Unit Schrader v alve core remo v al tools that allow f o r remov al and installation of th e valv e cores without removing manif old gauge set hoses are re commended to decrease t he e vacuation time. Lea ve th e line[...]

Installation Instr uctions Section 2 2-16 Part No. 80-1214-3 V er ify O-ring in schrader v alve caps are intact and reinstall on shut off v alves to pre vent refrigerant leakage. Replace shut off v alve acce ss caps and torque to th e f ollowing specifications. T orque V alue’ s Replace cap on receiv er service valv e and tighten. Open Receiver S[...]

Section 2 Installation Instructions Part No. 80 -1214-3 2-17 Suction Shut Off V alve Insulation The pre-f or med suction shut-off v alve insulation is located in the plas tic bag taped to the w ater cur tain. A. V er ify v alve and schr ader caps are tighte ned to specifications (see Step 6). B. Place insulation ov er schrade r valv e cap and left [...]

Installation Instr uctions Section 2 2-18 Part No. 80-1214-3 THIS P AGE I NTENTIONALL Y LEFT BLANK Revised 8/2003[...]

Part Number 80-1214-3 3-1 Section 3 Ice Machine Operation Component Id entification ICE MACHINE HEAD SECTION QC700/QF800 QF400 SV2022 SV2019 CONDENSER F AN MOTOR ICE/OFF/CLEAN TOGG LE SWITCH ICE CHUTE DUMP V AL VE CLEANING SOLUTION FILL HOLE W A TER LEVEL PROBE W A TER FLOA T V AL VE COIL W A TER INLET QUICK DISCO NNECT FITTING GEARMOTOR CONDENSER [...]

Ice Machine Operation Section 3 3-2 Part Number 80-1214- 3 QF2300 SV2102 CLEANI NG SOLUTION FILL HOLE ICE/OFF/ CLEAN TOG GLE SWITCH ICE CHUTE RET AINING CLAMP ICE CHUTE EV APORA TOR GEA T MOTOR/ GEAR BOX ASSEMBL Y W A TER LEVEL PROBES FLOA T V AL VE DUMP VA LV E ICE CHUTE ELBOW WATE R RESERVOIR CLEANING SOLUTION FILL HOLE SV2100 HEAD PRESSURE CONTR[...]

Section 3 Ice Machine Operation Part Number 80-1214-3 3-3 Operational Checks GENERAL Manitowoc ice machines a re factory-operated and adjusted before shipment. No rmally , a newly inst alled ice machine do es not requir e any adjustm ent. T o ensure proper operation, always follow the Operational Checks: • when st arting the ice machine for the f[...]

Ice Machine Operation Section 3 3-4 Part Number 80-1214- 3 Interior Cleaning and Sanitizing GENERAL Y ou are responsibl e for ma in taining the ic e machine in accordance with the instru ctions in this manual. Maintenance procedures ar e not covered by the warranty . Clean and san itize the ice machine every six months fo r efficient oper ation. If[...]

Section 3 Ice Machine Operation Part Number 80-1214-3 3-5 CLEANING THE CONDENSER Air-Cooled Condenser (SELF-CONT AINED AND REMOTE MODELS) A dirty condenser restrict s airflow , resulting in excessively high operating tem peratures. This reduces ice production and sh ortens component life . Clean the condenser at least every six months. Follow the s[...]

Ice Machine Operation Section 3 3-6 Part Number 80-1214- 3 MANITOWOC’ S C LEANING T ECHNOLOGY Manitowoc Flake/Chiplet Ice Machines include techno logy that allows the initiation and completion of a cleaning or sanitizing cycle at the flip of a sw itch. This cycle will permit cleaning of all surfac es that come in contact with the water distributi[...]

Section 3 Ice Machine Operation Part Number 80-1214-3 3-7 PREVENTATIVE MAINTENANCE CLEANING PROCEDURE QF400 Use Ice machine cleaner p art number 000000084 on ly . This cleaner is used to remove lime scale or other mineral deposit s. It is not used to remove algae or slime. Refer to “Cleaning/Sanitizin g Pro cedure” for removal of algae and slim[...]

Ice Machine Operation Section 3 3-8 Part Number 80-1214- 3 CLEANING/SANITIZING PROCEDURE QC700/QF800/QF2300 Use Ice machine cleaner p art number 000000084. Use Ice machine sanitizer p art number 94-0565 -3 . Ste p 1 Remove front and top cove rs and set the togg le switch to the OFF position. Ste p 2 Remove all ice from the bin. Ste p 3 Disconnect w[...]

Section 3 Ice Machine Operation Part Number 80-1214-3 3-9 CLEANING/SANITIZING PROCEDURE QF400 Use Ice machine cleaner p art number 000000084. Use Ice machine sanitizer p art number 94-0565-3 . Ste p 1 Set the toggle switch to the OFF position and remove all ice from the bin. Ste p 2 Remove the 2 thumbscrews and white plastic pan el . Ste p 3 Discon[...]

Ice Machine Operation Section 3 3-10 Part Number 80-1214- 3 PROCEDURE TO CLEAN HEAVILY SCALED FLAKE/CHI PLET ICE MACHINES QF400/QC700/QF800/QF2300 Ste p 1 Remove front and top covers, set the toggle switch to the OFF position.Re move all ice from the bin. Ste p 2 Remove front and top cove rs and set the togg le switch to the OFF position. Ste p 3 D[...]

Section 3 Ice Machine Operation Part Number 80-1214-3 3-11 REMOVAL OF PARTS FOR CLEANING/SANITIZING 1. T urn off the water supply to the ice machin e at the water service valve or discon nect water supply line at float valve quick disconnect by depressing stainless steel lever an d pulling the fitting of f. 2. Remove the component s listed on the f[...]

Ice Machine Operation Section 3 3-12 Part Number 80-1214- 3 W ater Leve l Probe Removal QF400/QC700/QF800/QF230 0 W ater Level Probe Removal 1. Place the toggle switch in th e OF F position, turn off the water supply and disconnect electrical power to the ice machine. 2. Disconnect water supp ly line at float valve qui ck disconnect by depressing s[...]

Section 3 Ice Machine Operation Part Number 80-1214-3 3-13 W ater Reservoir Cover Removal QF2300 1. Place the togg le swit ch in the OFF position, turn off the water supply and disconnect electr ical power to the ice machine. 2. Remove water level probes. 3. Remove water float valve coil. 4. Depres s coil and rotate 1/4 t urn counterc lockwise. 5. [...]

Ice Machine Operation Section 3 3-14 Part Number 80-1214- 3 W ater Reservoir Removal 1. Place th e toggle switc h in the OFF p osition and turn off the water supply to th e ice machine at the water service valve. 2. Disconnect water supply line at float valve quick disconnect by dep ressing stainless steel le ver . 3. Place the toggle switch in the[...]

Section 3 Ice Machine Operation Part Number 80-1214-3 3-15 Ice Chute Removal QC700/QF800 1. Follow steps to remove float reservoir . 2. The ice chute and ice chute grommet will be removed as a unit. Pull forwar d on the top of the ice chute, and slide the ice chute and grommet of f the end of the evaporator spout. 3. Remove evaporator spout insulat[...]

Ice Machine Operation Section 3 3-16 Part Number 80-1214- 3 Bin Door Remova l QF0400 Door removal allows easi er access for cleaning and sanitizing. 1. Disconnect the electrical powe r to the ice machine and remove ice from bin. 2. Grasp the rear of t he bin doo r and pull bin door forward approxim ately 5”. 3. Slide bin door to the rear while ap[...]

Section 3 Ice Machine Operation Part Number 80-1214-3 3-17 W ater Dump V alve The water dump va lve no rm a lly does not require removal for cleaning. T o determine if removal is necessary: 1. Locate t he water dum p valve. 2. Set the toggle switch to ICE. 3. While the ice machine is in the freeze mode, check the water trough to determ ine if the d[...]

Ice Machine Operation Section 3 3-18 Part Number 80-1214- 3 Removal from Service/Winterization GENERAL S pecial precautions must be taken if the ice machine head section is to be removed fr om service for an extended p eriod of time or exposed t o ambient temperatures of 3 2°F (0°C) or below . Follow the applicable pro c edure below . 1. Disconne[...]

Part No. 80-1 214-3 4-1 Section 4 Ice Machine Sequence of Operation QF400/QC700/QF800 PRIOR TO ST ART-UP When the toggle switch is placed in the “ice” position the following must occur prior to starting an ice making cycle. A. The bin leve l probe must be open (bin level light off). If the probe is closed, (bin level light on) when th e toggle [...]

Ice Machine Sequence of Operation Section 4 4-2 Part No. 80-1214- 3 QF2200 PRIOR TO ST ART-UP When the toggle switch is placed in the “ice” position the following must occur prior to starting an ice making cycle. A. The bin level probe must be open (bin level light off). If the probe is closed, (bin level light on) when the toggle switch is mov[...]

Section 4 Ice Machine Sequence of Operation Part No. 80-1 214-3 4-3 QF2300 PRIOR TO ST ART-UP When the toggle switch is placed in the “ice” position the following must occur prior to starting an ice making cycle. A. The bin leve l probe must be open (bin level light off). If the probe is closed, (bin level light on) when th e toggle switch is m[...]

Ice Machine Sequence of Operation Section 4 4-4 Part No. 80-1214- 3 THIS P AGE INTENTIONALL Y LEFT BLANK[...]

Part No. 80 -1214-3 5-1 Section 5 T r oubleshooting Checklist Problem P ossible Cause T o Correct Ice machine does not operate. No electrical power to the ic e machine. Replace the fuse/reset the b reaker/turn on main power s w itch/plug cord into receptacle. Control Board fuse open ICE/OFF/CLEAN toggle switch set improper ly . Mov e toggle s witch[...]

Troubleshooting Section 5 5-2 Part No. 80-1214-3 Safeguar d Feature In addition to standard saf ety controls, y our Manitow oc ice machine features b uilt-in Saf eGuar ds. The ice machine will stop when conditio ns arise that would cause major component fa ilure. RESET PROCEDURE 1. Mov e the ICE/OFF/CLEAN toggle s witch to OFF and then back to ICE.[...]

Section 5 Troubleshooting Part No. 80 -1214-3 5-3 Analyzi ng Why Saf eGuar ds Ma y Stop the Ice Machine According to the refrigerat ion industr y , a high percentage of compresso r f ailure are the result of e xternal causes. These can include floo ding or starving e xpansion v alv es, di r ty condensers, w ater loss to t he ice machine, etc. Saf e[...]

Troubleshooting Section 5 5-4 Part No. 80-1214-3 Gear Motor Spe ed Anytime th e motor speed se nsor detects the mot or speed (rpm) is below the minimum r ange f or 3 continuous seconds, the ice machine will: 1. De -energize the compress or and/or gear moto r . 2. Continuously f lash the Gear Motor Speed ligh t. 3. Initiate a 60-minute Standby Mode.[...]

Section 5 Troubleshooting Part No. 80 -1214-3 5-5 T emperature is T oo High or Low QF400/QC700/ QF800 The temperatur e sensor (the rmis tor) is mounte d on the compressor discharge line . The temper ature sensor provides inp ut to the control board. The contr ol board monitors the temper ature an ytime the compressor is energiz ed. If the thermisto[...]

Troubleshooting Section 5 5-6 Part No. 80-1214-3 T emperature is T oo High or Low QF2200 Onl y The temperatur e sensor (the rmis tor) is mounte d on the liquid line. The temperatur e sensor provides inpu t to the control board. The con trol board monitors th e temperat ure anytime th e liquid line solenoid v alv e is energiz ed. If the thermistor d[...]

Section 5 Troubleshooting Part No. 80 -1214-3 5-7 Gear B o x Remov al QF400 The e v aporat or and motor / gearbo x are separat e assemblie s. W arranty procedures r equire replacement of the entire e vapo rator or mo tor /gearbo x assembly . Separat e components are no t av ailable , and field reb uilding during the warr anty period is not allowed.[...]

Troubleshooting Section 5 5-8 Part No. 80-1214-3 QF2200/QF230 0 The e v aporat or and motor / gearbo x are separa te assemblie s. W arranty procedures r equire replacement of the entir e e vaporator or motor /gear bo x assembly . Separat e components are no t av ailable , and field reb uilding during the warr anty period is not allowe d. 1. Disconn[...]

Section 5 Troubleshooting Part No. 80 -1214-3 5-9 Ev aporator Remov al QF400 The e v aporat or and motor / gearbo x are separat e assemblie s. W arranty procedures r equire replacement of the entire e vapo rator or mo tor /gearbo x assembly . Separat e components are no t av ailable , and field reb uilding during the warr anty period is not allowed[...]

Troubleshooting Section 5 5-10 Part No. 80-1214-3 QF2200/QF230 0 The e v aporat or and motor / gearbo x are separa te assemblie s. W arranty procedures r equire replacement of the entir e e vaporator or motor /gear bo x assembly . Separat e components are no t av ailable , and field reb uilding during the warr anty period is not allowe d. 1. Discon[...]

Part No. 80 -1214-3 6-1 Section 6 Electrical System Energized P ar ts Char ts QF400/QC700/ QF800 When the toggle switch is placed in the ICE position, the f ollowing must occur prior to star ting an ice making cycle. A.)The bin lev el pro be must be open (Bin Le vel light off). If the probe is closed (Bin Lev el light on) when the toggle switch is [...]

Electrical System Section 6 6-2 Part No. 80-1 214-3 Energized P ar ts Char ts QF2200 *After the liquid line solenoid valv e energizes, the suction pressure will rise above the lo w-pressure switch cut-in (22 psig) and the compressor and condenser fan motor energize . The condenser fan motor remains ener gized during the entire freeze c ycle, the he[...]

Section 6 Electrical System Part No. 80 -1214-3 6-3 Energized P ar ts Char ts QF2300 When the toggle switch is placed in the ICE position, the f ollowing must occur prior to star ting an ice making cycle. A.)The bi n level probe must be open (Bin Lev el light off). If the probe is closed (Bin Le vel ligh t on) when the toggle switch is mo ved to IC[...]

Electrical System Section 6 6-4 Part No. 80-1 214-3 Wiring Diagram Sequence of Operation QF400 Initial Star t-Up or Star t-Up After A utomatic Shu t-Off 1A. W A TER FLUSH Immediately after placing the togg le s witch in “ICE”, the dump valv e solenoid, and gea rbo x are energiz ed. After 45 seco nds the dump v alv e de- energiz es. RELA Y K1 SV[...]

Section 6 Electrical System Part No. 80 -1214-3 6-5 Initial Star t-Up or Star t-Up After A utomatic Shu t-Off (cont.) 1B. W A TER FILL After 45 seco nds the float v alve solenoid is energiz ed. SV3034 RELA Y K1 GROUND L1 L2 (N) (21) (65) CONT A CTO R COIL (90) HIGH PRESSURE CUT -OU T (95) RELA Y K2 RELA Y K3 RELA Y K4 (25) 10 AMP FUSE (46) GEARMO T[...]

Electrical System Section 6 6-6 Part No. 80-1 214-3 Freeze Cyc le 2. F REEZE The gear motor , compresso r , condenser f an motor and wate r float v alve solenoid remain ene rgized a s the ice machine makes ice. The water float v alve will open and close automatically t o maintain the proper water le vel. SV3036 RELA Y K1 GROU ND L1 L2 (N) (21) (65)[...]

Section 6 Electrical System Part No. 80 -1214-3 6-7 A utomatic Shu t-Off 3A. ICE RUN O UT Ice will build up in the bin until it contacts the bin le vel probe . After ice contacts the bin le vel probe f or 30 continuous seco nd s the compressor de-energizes . T o allow excess ice to run out, the ge ar motor and t he wat er float v alv e solenoid rem[...]

Electrical System Section 6 6-8 Part No. 80-1 214-3 A utomatic Shu t-Off 3B. DRAIN EV APORATOR T o allow water to drain from the e vaporator , the dump v alve energizes f or 45 seconds , then de-energiz es. SV3038 RELA Y K1 GROU ND L1 L2 (N) (21) (65) CONT ACT OR COIL (90) HIGH PRESSU RE CUT -OUT (95) RELA Y K2 RELA Y K3 RELA Y K4 (25) 10 AMP FUSE [...]

Section 6 Electrical System Part No. 80 -1214-3 6-9 A utomatic Shu t-Off An 8 minute lockout star ts when t he compressor de-ener gizes . When the ice drops a wa y from the bin le ve l probe the ice mach ine will begin an initial star t-up cycle, provided the “8 minute loc k-out” has e xpired. 8 Min ute Loc k-out The bin le vel light will flash[...]

Electrical System Section 6 6-10 Part No. 80-1 214-3 Wiring Diagram Sequence of Operation QC700/QF800 Initial Star t-Up or Star t-Up After A utomatic Shu t-Off 1A. W A TER FLUSH Immediately after placing the togg le s witch in “ICE”, the dump valv e solenoid, and gea rbo x are energiz ed. After 45 seco nds the dump v alv e de- energiz es. SV312[...]

Section 6 Electrical System Part No. 80 -1214-3 6-11 Initial Star t-Up or Star t-Up After A utomatic Shu t-Off (cont.) 1B. W A TER FILL After 45 seco nds the float v alve solenoid is energiz ed. SV3124 RELA Y K1 GROU ND L1 L2 (N) (21) (65) CONT A CTOR COIL (90) HIGH PRESSU RE CUT -OUT (95) RELA Y K2 RELA Y K3 RELA Y K4 (25) 10 AMP FUSE (46) GEARMOT[...]

Electrical System Section 6 6-12 Part No. 80-1 214-3 Freeze Cyc le 2. F REEZE The gear motor , compresso r , condenser f an motor and wate r float v alve solenoid remain ene rgized a s the ice machine makes ice. The water float v alve will open and close automatically t o maintain the proper water le vel. SV3125 RELA Y K1 GROUND L1 L2 (N) (21) (65)[...]

Section 6 Electrical System Part No. 80 -1214-3 6-13 A utomatic Shu t-Off 3A. ICE RUN O UT Ice will build up in the bin until it contacts the bin le vel probe . After ice contacts the bin le vel probe f or 30 continuous seco nd s the compressor de-energizes . T o allow excess ice to run out, the ge ar motor and t he wat er float v alv e solenoid re[...]

Electrical System Section 6 6-14 Part No. 80-1 214-3 A utomatic Shu t-Off 3B. DRAIN EV APORATOR T o allow water to drain from the e vaporator , the dump v alve energizes f or 45 seconds , then de-energiz es. SV3127 RELA Y K1 GROUND L1 L2 (N) (21) (65) CONT ACT OR COIL (90) HIGH PRESSURE CUT -OUT (95) RELA Y K2 RELA Y K3 RELA Y K 4 (25) 10 AMP FUSE [...]

Section 6 Electrical System Part No. 80 -1214-3 6-15 A utomatic Shu t-Off An 8 minute lockout star ts when t he compressor de-ener gizes . When the ice drops a wa y from the bin le ve l probe the ice mach ine will begin an initial star t-up cycle, provided the “8 minute loc k-out” has e xpired. 8 Min ute Loc k-out The bin le vel light will flas[...]

Electrical System Section 6 6-16 Part No. 80-1 214-3 Wiring Diagram Sequence of Operation QF2200 Initial Star t-Up or Star t-Up After A utomatic Shu t-Off 1A. W A TER FLUSH Immediately after placing the togg le s witch in “ICE”, the dump valv e solenoid, and gea rbo x are energiz ed. After 45 seco nds the dump v alv e de- energiz es. SV3043 REL[...]

Section 6 Electrical System Part No. 80 -1214-3 6-17 RFC2085 Initial Star t-Up Remote Condensing Unit 1A. W A TER FLUSH The condensing unit is off . SV3040 RUN CAP A CITOR (50) (43) (48) COMPRESSOR RUN CAP A CIT OR (47) (46) (49) (44) ST ART CAP A CITOR RELA Y S C R 52 1 (45) OV E R L OA D CONT A CTOR CONT A CTS CONT ACT OR CONT A CTS CONT A CT OR [...]

Electrical System Section 6 6-18 Part No. 80-1 214-3 QF2200 Initial Star t-Up 1B. W A TER FILL After 45 seco nds the wa ter float v alve solenoid is energiz ed. When w ater contacts the w ater le v el probe the liquid line solenoid v alve energiz es and remains on thro ughout the F reeze Cycle. SV3044 RELA Y K1 RELA Y K2 RELA Y K3 RELA Y K 4 (25) L[...]

Section 6 Electrical System Part No. 80 -1214-3 6-19 RFC2085 Initial Star t-Up 1B. W A TER FILL The condensing unit is off . SV3040 RUN CAP A CIT OR (50) (43) (48) COMPRESSOR RUN CAP A CITOR (47) (46) (49) (44) ST ART CAP A CIT OR RELA Y S C R 52 1 (45) O VERLO AD CONT A CT OR CONT A CTS CONT ACT OR CONT A CTS CONT A CTO R COIL LO W PRESSU RE CUT -[...]

Electrical System Section 6 6-20 Part No. 80-1 214-3 QF2200 Freeze Cyc le 2. F REEZE The gear motor , liquid line solenoid valv e an d water float v alve solenoid remain energiz ed as the ice machine makes ice . The water float valv e will open and close a utomatically to maintain the prop er water le v el. SV3046 RELA Y K1 RELA Y K2 RELA Y K3 RELA[...]

Section 6 Electrical System Part No. 80 -1214-3 6-21 RFC2085 Freeze Cyc le 2. F REEZE Refrigerant pressure e xceeds the low pressure control setp oint. The contactor coil energ izes and the contacts cl ose. The compress or and condenser f an motor energize and remain on throu ghout the entire freeze cycle. SV3042 RUN CAP A CIT OR (50) (43) (48) COM[...]

Electrical System Section 6 6-22 Part No. 80-1 214-3 QF2200 A utomatic Shu t-Off 3A. ICE RUN O UT Ice will build up in the bin until it contacts the bin le vel probe . After ice contacts the bin le vel probe f or 30 continuous seconds th e liquid line solenoid v alv e de-energiz es. T o allow e xcess ice to run o ut, the gear m otor and the wa ter [...]

Section 6 Electrical System Part No. 80 -1214-3 6-23 RFC2085 A utomatic Shu t-Off When the refriger ant pressure is lo w enough to open the low-pressure s witch, the contactor co il is de- energiz ed and the compre ssor and condenser f an motor stop . SV3040 RUN CAP A CITOR (50) (43) (48) COMPRESSOR RUN CAP A CIT OR (47) (46) (49) (44) ST ART CAP A[...]

Electrical System Section 6 6-24 Part No. 80-1 214-3 QF2200 A utomatic Shu t-Off 3B. W ATER DRAIN T o allow water to drain from the e vaporator , the dump v alve energizes f or 90 seconds , then de-energiz es. An 8 minute lockout star ts when t he compressor de-ener gizes . When the ice drops a wa y from the bin le ve l probe the ice mach ine will [...]

Section 6 Electrical System Part No. 80 -1214-3 6-25 QF2200 A utomatic Shu t-Off An 8 minute lockout star ts when t he compressor de-ener gizes . When the ice drops a wa y from the bin le ve l probe the ice mach ine will begin an initial star t-up cycle, provided the “8 minute loc kout” has e xpired. 8 Minute Lock out The bin le vel light will [...]

Electrical System Section 6 6-26 Part No. 80-1 214-3 Wiring Diagram Sequence of Operation QF2300 Initial Star t-Up or Star t-Up After A utomatic Shu t-Off 1A. W A TER FLUSH Immediately after placing the togg le s witch in “ICE”, the dump valv e solenoid, and gea rbo x are energiz ed. After 45 seco nds the dump v alv e de- energiz es. SV2109 REL[...]

Section 6 Electrical System Part No. 80 -1214-3 6-27 RFC2385 Initial Star t-Up Remote Condensing Unit 1A. W A TER FLUSH Immediately after placing the togg le s witch in “ICE”, the dump valv e solenoid, and gea rbo x are energiz ed. After 45 seco nds the dump v alv e de- energiz es. SV2121 RUN CAP A CITOR (50) (43) (48) COMPRESSOR RUN CAP A CIT [...]

Electrical System Section 6 6-28 Part No. 80-1 214-3 QF2300 Initial Star t-Up 1B. W A TER FILL After 45 seco nds the wa ter float v alve solenoid is energiz ed. SV2110 RELA Y K1 RELA Y K2 RELA Y K3 RELA Y K 4 (25) L1 L2 (54) (53) LIQUID LINE SOLENOID CENTRIFUGAL SWITCH (65) INTERNAL O VERLO AD ST ART RUN GEARMOT OR W A TER FLOA T V AL VE DUMP V AL [...]

Section 6 Electrical System Part No. 80 -1214-3 6-29 RFC2385 Initial Star t-Up 1B. W A TER FILL After 45 seco nds the wa ter float v alve solenoid is energiz ed. SV2121 RUN CAP A CIT OR (50) (43) (48) COMPRESSOR RUN CAP A CITOR (47) (46) (49) (44) ST ART CAP A CIT OR RELA Y S C R 52 1 (45) O VERLO AD CONT A CT OR CONT A CTS CONT ACT OR CONT A CTS C[...]

Electrical System Section 6 6-30 Part No. 80-1 214-3 QF2300 Ice Mac hine Head Sectio n Freeze Cyc le 2. F REEZE When water contacts the water lev el probe the liquid line solenoid v alve, equalization v alve, compressor and condenser f an motor energiz e. The gear motor , compressor , conden ser f an motor and w ater float valv e solenoid remain en[...]

Section 6 Electrical System Part No. 80 -1214-3 6-31 RFC2385 Freeze Cyc le 2. F REEZE The compressor and condenser fan motor remain ene rgized during th e entire F reeze Cycle. SV2122 RUN CAP A CIT OR (50) (43) (48) COMPRESSOR RUN CAP A CITOR (47) (46) (49) (44) ST ART CAP A CIT OR RELA Y S C R 52 1 (45) O VERLO AD CONT A CT OR CONT A CTS CONT ACT [...]

Electrical System Section 6 6-32 Part No. 80-1 214-3 QF2300 A utomatic Shu t-Off 3A. ICE RUN O UT Ice will build up in the bin until it contacts the bin le vel probe . After ice contacts the bin le vel probe f or 30 continuous seconds th e liquid line solenoid v alv e, equal ization v alve and compressor de- energiz e. T o allow e xcess ice to r un[...]

Section 6 Electrical System Part No. 80 -1214-3 6-33 RFC2385 A utomatic Shu t-Off When the refriger ant pressure is lo w enough to open the low-pressure s witch, the contactor co il is de- energiz ed and the compre ssor and condenser f an motor stop . SV2121 RUN CAP A CITOR (50) (43) (48) COMPRESSOR RUN CAP A CIT OR (47) (46) (49) (44) ST ART CAP A[...]

Electrical System Section 6 6-34 Part No. 80-1 214-3 QF2300 A utomatic Shu t-Off 3B. W ATER DRAIN T o allow water to drain from the e vaporator , the dump v alve energizes f or 90 seconds , then de-energiz es. An 8 minute lockout star ts when t he compressor de-ener gizes . When the ice drops a wa y from the bin le ve l probe the ice mach ine will [...]

Section 6 Electrical System Part No. 80 -1214-3 6-35 QF2300 A utomatic Shu t-Off An 8 minute lockout star ts when t he compressor de-ener gizes . When the ice drops a wa y from the bin le ve l probe the ice mach ine will begin an initial star t-up cycle, provided the “8 minute loc kout” has e xpired. 8 Minute Lock out The bin le vel light will [...]

Electrical System Section 6 6-36 Part No. 80-1 214-3 Wiring Diagrams The f o llowing pa ges contain electrical wi ring diagrams. Be sure you are re f erring to the correc t diagram f or the ice machine which you are ser vicing. WIRING DIAGRAM LEGEND The f o llowing sym bols are used on all of the wiring diag rams: * Internal Compressor Ov erload (S[...]

Section 6 Electrical System Part No. 80 -1214-3 6-37 ICE MA CHINE HEAD SECTION QF400 115V/60Hz/1Ph - 230V/50Hz/ 1Ph (Diagr am Shown During F reeze Cycle) SV3094 GROU ND L1 L2 (N) 10 AMP FUSE (25) SEE SERIAL PLA TE FOR V OL T A GE RELA Y K2 RELA Y K1 RELA Y K3 RELA Y K4 (21) (52) WATE R VA LV E DUMP VA L V E (22) (51) (55) (90) (46) HIGH PRESSURE CU[...]

Electrical System Section 6 6-38 Part No. 80-1 214-3 QC700/QF800 115V/60Hz/1Ph - 230V/50Hz/ 1Ph (Diagr am Shown During F reeze Cycle) SV3006 GROUND L1 L2 (N) SEE SERIAL PLA T E FOR V OL T AGE (21) (65) (95) (90) 10 AMP FUSE (25) RELA Y K2 RELA Y K1 RELA Y K3 RELA Y K4 HIGH PRESSURE CUT OUT CONT A CTOR COIL (52) (22) (51) W A TER FLOA T V AL VE COIL[...]

Section 6 Electrical System Part No. 80 -1214-3 6-39 COMPRESSOR SECTION QC700/QF800 115/60/1 - 230/50/1 (Diagr am Shown During F reeze Cycle) SV2005 L2 F AN MOT OR (AIR-COOLED ONL Y) COMPRESSOR PO TENTIAL RELA Y (C5) (C2) (C1) (C4) (43) GEARMO T OR F AN MOT OR (AIR-COOLED ONL Y) ST ART CAP ACIT OR RUN CAP ACIT OR (62) (31) (49) (95) (21) (L1) CONT [...]

Electrical System Section 6 6-40 Part No. 80-1 214-3 ICE MA CHINE HEAD SECTION QF2200 115/60/1 - 230/50/1 (Diagr am Shown During F reeze Cycle) SV3012 GROUND L2 (N) SEE SERIAL PLA TE FOR V OL T AGE (21) (53) (54) 10 AMP FUSE RELA Y K2 RELA Y K1 RELA Y K3 RELA Y K4 LIQUID LINE SOLENOID (52) (22) (51) WA T E R VALV E DUMP V AL VE (55) (56) (L1) ST AR[...]

Section 6 Electrical System Part No. 80 -1214-3 6-41 RFC2085 230V/60HZ/1PH - 230 /50/1 (Diagr am Shown During F reeze Cycle) SV3014 RUN CAP ACIT OR F AN MOT OR C S R COMPRESSOR (44) (47) (74) (95) (94) (96) L1 L2 HIGH PRESSURE CUTOUT LO W PRESSURE CUTOUT CONT ACT OR COIL COMPRESSOR CRANKCASE HEA TER CONT A CTO R CONT A CTS CONT A CT OR CONT A CTS R[...]

Electrical System Section 6 6-42 Part No. 80-1 214-3 RFC2085 208-230V/60HZ/3PH (Diagr am Shown During F reeze Cycle) SV3013 RUN CAP ACIT OR F AN MOT OR COMPRESSOR (74) (95) (94) (96) L1 L2 HIGH PRESSURE CUTOUT LO W PRESSURE CUTOUT CONT ACT OR COIL COMPRESSOR CRANKCASE HEA TER CONT A CTOR CONT ACTS L3 L1 L2 L3 T1 T2 T3 Revised 8/2003[...]

Section 6 Electrical System Part No. 80 -1214-3 6-43 ICE MA CHINE HEAD SECTION QF2300 115/60/1 - 230/50/1 (Diagr am Shown During F reeze Cycle) SV3012 GROUND L2 SEE SERIAL PLA TE FOR V OL T AGE (53) (54) 7 AMP FUSE RELA Y K2 RELA Y K1 RELA Y K3 RELA Y K4 LIQUID LINE SOLENOID (52) (22) (51) WA T E R VALV E DUMP V AL VE (55) (L1) ST ART GEARMO T OR ([...]

Electrical System Section 6 6-44 Part No. 80-1 214-3 RFC2385 230V/60HZ/1PH - 230/50/1 (Diagr am Shown During F reeze Cycle) SV2107a RUN CAP ACIT OR F AN MOT OR C S R COMPRESSOR (44) (47) (74) (95) (94) (96) L1 L2 HIGH PRESSURE CUTOUT CONT A CTO R COIL COMPRESSOR CRANKCASE HEA TER CONT ACT OR CONT A CTS CONT ACT OR CONT ACTS RUN CAP ACIT OR ST ART C[...]

Section 6 Electrical System Part No. 80 -1214-3 6-45 RFC2385 208-230V/60HZ/3PH (Diagr am Shown During F reeze Cycle) SV2108a RUN CAP ACIT OR F AN MOT OR COMPRESSOR (74) (95) (94) (96) L1 L2 HIGH PRESSURE CUTOUT CONT ACT OR COIL COMPRESSOR CRANKCASE HEA TER CONT A CTOR CONT ACTS L3 L1 L2 L3 T1 T2 T3 (85) C2 C1 Revised 8/2003[...]

Electrical System Section 6 6-46 Part No. 80-1 214-3 Control Boar d AC L IN E VO L TAGE ELECTRICAL PLUG MAIN FUSE W A T ER LEVEL SENSOR BIN LEVEL SENSOR TEMPERA TU RE SENSOR (RESIST OR QF2300 ONL Y) MO T OR SPEED SENSOR ICE OFF CLEAN TO G G L E SWITCH (20) (23) (19) YELLO W GREEN GREEN RED GREEN GREEN RED RED RED CLEAN LIGHT FULL BIN LIGHT DISCHARG[...]

Section 6 Electrical System Part No. 80 -1214-3 6-47 Component Specific ations and Diagnostics ICE/OFF/CLEAN T OGGLE SWITC H Function The s witch is used to place the ice machine in ICE, OF F or CLEAN mode of oper ation. Specifications Single-pole , single-thro w s witch. The s witch is connected into a v arying low D .C . v oltage circuit. Check P[...]

Electrical System Section 6 6-48 Part No. 80-1 214-3 2. Disconnect bin lev el probe from control board and chec k continuity (ohms) from the f e male connecto r to the bin le vel probe . 3. Re mov e bin le vel probe from ice chute and clean with Manito woc Ice Machine Clea ner and Sanitiz er . Rinse well with fresh water , reinstall and monitor the[...]

Section 6 Electrical System Part No. 80 -1214-3 6-49 MOTOR SPEED SENSOR Function The motor spee d sensor v erifies that the gear bo x motor is rotating at the correct spe ed. Failure Modes MO TOR SPEED SENSOR OPEN OR DISCONNECTED (ICE MA CHINE WILL NO T ST AR T .) P erf or ms initial start-up procedure. T en to 15 seconds after the ice machin e ent[...]

Electrical System Section 6 6-50 Part No. 80-1 214-3 W A TER LEVEL PR OBES Function The wate r le vel prob e protects the compressor if water is not detected . W ater contacting the probes will complete the ci rcuit and energize the W ater Lev el Probe light. There are tw o wate r lev el probes; one probe is conne cted to the circuit bo ard and one[...]

Section 6 Electrical System Part No. 80 -1214-3 6-51 4. Disconnect wate r le ve l probe from cont rol board. Inst all jumper from co ntrol board “w ater lev el” terminal to ground. 5. Move the toggle switch from ICE to OFF to IC E position. Wait 45 seconds, then monito r the W ater Lev el Probe light. W A TER LEVEL PROBE CLOSED OR SHOR TED 1. D[...]

Electrical System Section 6 6-52 Part No. 80-1 214-3 T EMPERATURE SENS OR Function The tempera ture sensor pro vides input to the control board. The contr ol board monitors the t emperature anytime the liquid line solenoid valv e or compressor is energiz ed. When a temper ature is sensed that is abo ve or below the corr ect temperatur e range , the[...]

Section 6 Electrical System Part No. 80 -1214-3 6-53 CONTROL BOAR D RELAYS Function The control board rela ys energize a nd de-energiz e system components. Specifications Rela ys are not field replacea ble . There are f our relays on the control board : Check Pr ocedure 1. Leav e all wiring connected and ref er to the Energized P ar ts Char t . The[...]

Electrical System Section 6 6-54 Part No. 80-1 214-3 W ATER FLOAT V ALVE Function The float v alve maintains correct w ater le v el during the F reeze cycle. It allows th e e vap orator to dr ain completely during the A utomatic Shut-Of f cycle. Check Pr ocedure 1. V erify water is supplie d to the float v alv e, the w ater inlet screen is clean, a[...]

Section 6 Electrical System Part No. 80 -1214-3 6-55 HIGH PRESSURE CONTROL (HPCO) Function The high pressure cont rol stops the ice machine if subjected to e xcessive high- side pressure. The HPCO control is normally closed, and opens on a rise in discharge pressure . Specifications Cut-out:450 psig ±10 Cut-in:A utomatic reset (must be belo w 300 [...]

Electrical System Section 6 6-56 Part No. 80-1 214-3 FAN CYC LE CONTROL Function Cycles the condenser fan motor on a nd off to maint ain proper operating dis charge pressure. The f an cycling control closes on an increase in discharge pressure and o pens on a de crease in discharge pr essure. Check Pr ocedure 1. V erify f an motor windings ar e not[...]

Section 6 Electrical System Part No. 80 -1214-3 6-57 COMPRESSOR ELECTRICAL DIAGNOSTICS The compressor will not star t or will tr ip repeatedly on ov erload. Check Resistance (Ohm) V alues NO TE: Compressor windings can hav e very low ohm v alues. Use a pro perly calibrated meter . P erf orm the resistance test after t he compressor cools . The comp[...]

Electrical System Section 6 6-58 Part No. 80-1 214-3 Diagnosing St art Components If the compressor attempts to start, or hums and trips the ov er load prote ctor , check th e star t components be fo re replacing th e compressor . CAPACITOR • Visual e v idence of capacitor f ailure can include a bulg ed terminal end or a ruptured membrane . Do no[...]

Section 6 Electrical System Part No. 80 -1214-3 6-59 Diagnosing An Ice Ma c hine That Will Not Run QF400/QC700/ QF800/QF2200/QF 2300 QF2200/QF230 0 - If the gearmotor is energiz ed b ut no ice is produced, r ef er to “ Diagnosing a Condensing Unit That Will Not Run”. 1. V erify pr imary voltage is supplied to ice machine and the fuse/circuit br[...]

Electrical System Section 6 6-60 Part No. 80-1 214-3 THIS P AGE I NTENTIONALL Y LEFT BLANK Revised 8/2003[...]

Part No. 80 -1214-3 7-1 Section 7 Refrigeration System T ubing Schematic QF400/QC700/ QF800 DRIER EV APORA T OR EXP ANSION VA LV E COMPRES SOR SV3082 CONDENSER (AIR OR W A TER) RECEIVER (QF400) Revised 8/2003[...]

Refrigeration System Section 7 7-2 Part No. 80-1 214-3 QF2200/RFC2085 CONDENSER COMPRESSOR SUCTION LINE FIL TE R S TRAP REQUIRED 21’ OR GREA TER RISE HEAD PRESSURE CONTROL VA LV E SUCTION SHUT -OFF VA LV E HEA T EXCHANGER DRIER RECEIVER SER VICE VA LV E RECEIVER CHECK V AL VE TXV LIQUID LINE SHUT -OFF VA LV E SV3015 Condensing Unit Ice Machin e H[...]

Section 7 Refrigeration System Part No. 80 -1214-3 7-3 QF2300/RFC2385 CONDENSER COMPRESSOR SUCTION LINE FIL TER S TRAP REQUIRED 21’ OR GREA TER RISE HEAD PRESSURE CONTROL VA LV E SUCTION SHUT -OFF VA LV E LLSV DRIER RECEIVER SER VICE VA L V E RECEIVER CHECK V AL VE TXV LIQUID LINE SHUT -OFF VA LV E SV2105 Condensing Unit Ice Machin e Head Section[...]

Refrigeration System Section 7 7-4 Part No. 80-1 214-3 Refrigeration S ystem Diagnostics General When analyzing the refrigeration system, it is impor tant to understand th at diff erent refrigeration componen t malfunctions ma y cause very similar symptoms. Many e xter nal f actors can mak e good refrigeration components appear bad . These f actors[...]

Section 7 Refrigeration System Part No. 80 -1214-3 7-5 BEFORE BEGINNING SERVICE Ice machines ma y expe rience operationa l proble ms only durin g cer tain times of the da y or night. A machin e ma y function properly while it is being ser viced, but malfunctions later . Inf or mation provided by the user can help the te chnician star t in the r igh[...]

Refrigeration System Section 7 7-6 Part No. 80-1 214-3 INSTALLATION/VISUAL INSPECTIO N CHECKLIST W A TER SYSTEM CHECKLIST A water- related prob lem often causes the same sym ptoms as a refrigeration system compone nt malfunction. Example: A water float v alv e ov er fillin g during the freeze cycle, a system lo w on charge, and a star ving TXV hav [...]

Section 7 Refrigeration System Part No. 80 -1214-3 7-7 ANALYZING DISCHAR GE PRESSU RE DURING FREEZE OR HAR VEST CYCLE Proce dure 1. Deter mine the ice machine operat ing conditions: Air temp . entering condenser ______ Air temp . around ice machine ___ ___ W a ter temp. entering water reser voir ______ 2. Refer to Cycle Times/ 24 Hour Ice Productio[...]

Refrigeration System Section 7 7-8 Part No. 80-1 214-3 ANALYZING SUCTION PRESSURE NO TE: Analyze discharge pressu re bef ore analyzing suction pressure . High or low discharge pressure ma y be causing high or lo w suction pressure . Suction Pressure Hi gh Checklist Suction Pressure Lo w Chec klist NO TE: Do not limit your diagnosis to on ly the ite[...]

Section 7 Refrigeration System Part No. 80 -1214-3 7-9 EQUALIZATION V ALVE (QF2300) General The equalization v alve is an electrically operated v alv e that closes when energiz ed, and opens when de- energiz ed. Normal Operation The v alv e is energized (closed) during the freeze cycle and de-energiz ed (open) during the off cycle. The va lve equal[...]

Refrigeration System Section 7 7-10 Part No. 80-1 214-3 HEADMASTER CONTROL V ALVE Function The headmaster contr ol valv e maintains the correct discharge pressu re and liquid line temper ature. Manito woc Ice Machine systems requir e headmaster control valv es with special settings. Replace def ectiv e headmaster control v alves only with “origin[...]

Section 7 Refrigeration System Part No. 80 -1214-3 7-11 Cycle Time/24 Hour Ice Pr oduct ion/Refrig erant Pressure Charts These char ts are used as guideline s to verify correct ice machine operatio n. Accurate collection of data is essential to obta in the correct diagno sis. • Ref er to “Refrigeration System Dia gnostics” f or the data that [...]

Refrigeration System Section 7 7-12 Part No. 80-1 214-3 QC700 SELF-CONTAINED AIR COOLED NO TE: These characteristics may v ar y depending on operat ing conditions. 24 Hour Ice Pr oduction Operating Pressures QC700 SELF-CONTAINED W ATER COOLED NO TE: These characteristics may v ar y depending on operating cond itions. 24 Hour Ice Pr oduction Operati[...]

Section 7 Refrigeration System Part No. 80 -1214-3 7-13 QF800 SELF-CONTAINED AI R COOLED NO TE: These charact eristics may v ar y depending on operat ing conditions. 24 Hour Ice Pr oduction Operating Pressures QF800 SELF-CONTAINED W ATER COOLED NO TE: These characteristics may v ar y depending on operating cond itions. 24 Hour Ice Pr oduction Opera[...]

Refrigeration System Section 7 7-14 Part No. 80-1 214-3 QF2200/RFC2085 REMOTE AIR COOL ED NO TE: These characteristics may v ar y depending on 24 Hour Ice Pro duction 24 Hour Ice Pr oduction Operating Pressures QF2300/RFC2385 REM OTE AIR COOLED NO TE: These char acteristics may v ar y depending on 24 Hour Ice Pro duction 24 Hour Ice Pr oduction Ope[...]

Section 7 Refrigeration System Part No. 80 -1214-3 7-15 Refrigerant Recovery/E vacuation and Rec harging REFRIGERANT RECOVERY/EVACUATION Normal Self-Contained Model Pr ocedures Do not purge refriger ant to the atmosph ere. Capt ure refrigerant using reco v er y equipment. F ollow the manuf acturer’ s recommendations . CONNECTIONS Quic k disconnec[...]

Refrigeration System Section 7 7-16 Part No. 80-1 214-3 Connections Manif old gauge sets must utilize low loss fittings to comply with U .S. Go v er nment rules and regula tions. Mak e these connections: • Suction side of the compressor through t he suction shut-off valv e. • Dischar ge side of the compressor throug h the liquid line shut-off v[...]

Section 7 Refrigeration System Part No. 80 -1214-3 7-17 Self-Contained Model Char ging Pro cedures 1. Be sure the toggle switch is in the OFF position. Charging Connect ions 2. Close the vacuum pump v alve, the low side service valv e, and the low side manifold gauge v alve. 3. Open the high side manif old gauge valv e, and bac kseat the high side [...]

Refrigeration System Section 7 7-18 Part No. 80-1 214-3 Remote Charging Pr ocedures (QF2200/QF2300) 1. Be sure the toggle switch is in the OFF position. 2. Close the vacuum pump v alve and the lo w side manif o ld gauge valv e. 3. Open the refrigerant cylinder and ad d the proper refrigerant char ge (shown on n ameplate) into the system high side ([...]

Section 7 Refrigeration System Part No. 80 -1214-3 7-19 SYSTEM CONTAMINATION CLEAN-UP General This section describes the basic requirements f or restoring contaminated systems to reliab le ser vice. Determining Seve rity Of Contamination System contamination is generally caused b y either moisture or residu e from compresso r b ur nout enter ing th[...]

Refrigeration System Section 7 7-20 Part No. 80-1 214-3 Mild System Contami nation Clean up Procedu re 1. Replace any f ailed components . 2. If th e compressor is good , change the oil. 3. Replace the liquid line dr ier . NO TE: If the contamination is from moistu re, use heat lamps during e va cuation. P osition them at the compressor , condenser[...]

Section 7 Refrigeration System Part No. 80 -1214-3 7-21 9. Follo w the normal ev acuation procedure, e xcept replace the e vacuation step with the f ollowing: A. Pull v acuum to 1000 m icrons . Break the v acuum with dry nitrogen and s weep the syst em. Pressurize to a minim um of 5 psi. B. Cha nge the v acuum pump oil. C . Pull vacu um to 500 micr[...]

Refrigeration System Section 7 7-22 Part No. 80-1 214-3 Using Pinch-Off T ool SV1406 Revised 8/2003[...]

Section 7 Refrigeration System Part No. 80 -1214-3 7-23 FILTER -DRIERS Liquid Line Filter Drie r The filter-driers used on Manito woc ice machine s are manuf actured to Manitow oc specifications . The diff erence between Manito woc driers and off-the- shelf driers is in filtration. Ma nitowo c driers hav e dir t- retaining filtration, with fiberg l[...]

Refrigeration System Section 7 7-24 Part No. 80-1 214-3 REFRIGERANT DEFINITIONS Recover T o remov e refrigerant, in an y condition, fr om a system and store it in an external container , without neces sarily testing or processing it in an y wa y . Recyc le T o clean refrigerant f or re-use by oil separ ation and single or multiple pa sses through d[...]

Revised 8/2003[...]

Attend A Manito w oc F actory Serv ice School • Improv e Y our Ser vice T echniques • Netw ork with Y our P eers • 4 1/2 Da ys of Intensive T raining on Manito woc Ice Machines • Extensiv e “Hands On” T raining on a V ar iety of Equipment • Breakf a st, Lunch and Hotel Room Included with T uition • Contact Y our Distributor or Manit[...]

Section 7 Refrigeration System Part No. 80 -1214-3 7-25 REFRIGERANT RE-USE POLIC Y Manito woc recogniz es and supp or ts the need f or proper handling, re-u se, and disposal of , CFC and HCFC refrigerants . Manito woc service procedures require recapturing refrigeran ts, not v enting them to the atmosphere . It is not necessary , in or out of w arr[...]

Refrigeration System Section 7 7-26 Part No. 80-1 214-3 THIS P AGE I NTENTIONALL Y LEFT BLANK Revised 8/2003[...]