Ice-O-Matic GEM1256A/W manual

ICE-O-Matic 11100 East 45th Ave Denver, Colorado 80239 Part Number 9081350-01 Date 2/07 SERVICE AND INSTALLATION MANUAL GEM0650A/W,GEM0956A/W and GEM1256A/W GEM0655 Air[...]

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GEM0650/0956/1256 A/W Forward Page i How To Use This Manual ICE-O-Matic provides this manual as an aid to th e end user and service technician in installation and maintenance of the GEM Series ice machines. Do not attempt to perform installation, start-up or maintenance unless you have read and fully understand this manual. If, at any time, you enc[...]

GEM0650/0956/1256 A/W Table Of Contents Page ii Table of Contents Forward........................................................................................................................ ................ Page i Table Of Contents.............................................................................................................. ....[...]

GEM0650/0956/1256 A/W Freight Claim Procedure Page iii Important! Inspect Promptly This merchandise has been carefully inspected and packed in accordan ce with the carrier’s packing specifications. Responsibility for safe delivery has been assumed by the carrier. If loss or damage occurs, yo u as the consignee must file a claim with the carrier a[...]

GEM0650/0956/1256 A/W Warranty Page iv ICE-O-Matic Parts and Labor Domestic & International Limited Warranty Mile High Equipment LLC (the “Company”) warrants ICE-O-Matic brand ice machines, ice dispensers, re mote condensers, water filte rs, and ice storage bins to the end customer against defects in mate rial and factory workmanship for th[...]

GEM0650/0956/1256 A/W For the Installer Page 1 Installation Guidelines: For proper operation of the ICE-O-Matic ice machine, the following installation guideli nes must be followed. Failure to do so may result in loss of production capacit y, premature part failures, and may void all warranties. Ambient Operating Temperatures: Minimum Operating Tem[...]

GEM0650/0956/1256 A/W For The Installer Page 2 GEM0650/0655/0956A/W[...]

GEM0650/0956/1256 A/W For The Installer Page 3 GEM1256A/W[...]

GEM0650/0956/1256 A/W For the Installer Page 4 Bin Application The GEM Series are designed to fit the following ICE-O-Matic Bins. ● B42, using Bin Top KBT 24 (Note: GEM0650, GEM0655 and GEM0956 ONLY) ● B25, B40 B55 using Bin Top KBT19. ● B100 using Bin Top KBT 23 (one unit) or KBT 22 (two units). ● B120, B150, B170-Not designed for GEM Seri[...]

GEM0650/0956/1256 A/W For the Installer Page 5 Location: ICE-O-Matic ice machines are designed to be installed indo ors in a controlled environment. Install the ice machine in a location where it has enough space around it t o be accessible for service. A minimum of 6 inches must be allowed at the back for air circulation on air cooled models. Try [...]

GEM 0650/0956/1256 A/W For the Installer Page 6 A llow 6 “Clearance for Air Circulation A proper installation locates the ice machine indoors, but in a place where the heat and noise it produces are not objectionable. Air cooled machines discharge hot air out the back and must have a minimum of 6 inches of clearance behind the ice machine. Space [...]

GEM0650/0956/1256 A/W For the Plumber Page 7 Water Inlet: ● Air Cooled Models: The recommended water supply is clean, cold water. Use 3/8 inch O.D. copper tubing, connect to the 3/8 inch male flare at the back of the cabinet. Install a hand valve near the machine to control the water supply. ● Water Cooled Models: A separate 3/8 inch O.D. coppe[...]

GEM0650/0956/1256 A/W For the Electrician Page 8 Electrical Connections: Check the ice machine nameplate (located on the ba ck panel) for the voltage requirements, and minimum circuit ampacity. The ice machine requires a solid chassis to earth ground. Connect the ice machine to its own electrical cir cuit so it is individually fused. Voltage variat[...]

GEM0650/0956/1256A/W For the Installer Page 9 Final Check List: _______ 1. Is the ice machine installed indoors in a location where the air and water temperatures are controlled and where they do not exceed the design limitations? _____2. Is there an electrical service disconne ct within sight of the installed machine? _____3. Has the voltage been [...]

GEM0650/0956/1256 A/W Start Up Page 10 Pre-Start Inspection: 1. Remove the front and side service panels. 2. Check that any shipping blocks have been removed. 3. Inspect the interior of the ice machine for loose screws or wi res. 4. Check that no refrigerant lines are rubbing each other. 5. Check that the fan blades turn freely (Air Cooled). 6. Che[...]

GEM0650/0956/1256 A/W Component Description Page 11 ● Control Box: Contains the electrical controls that operate the machine. ● High Pressure Cut Out Switch: An auto-reset switch sensing the high side refrigeration pressure. It wil l shut the machine off if the discharge pressure ex ceeds 450 psig. ● Low Pressure Cut Out Switch: An auto-reset[...]

GEM0650/0956/1256 A/W Component Description Page 12 ● Contactor: A definite purpose contactor connecting the compressor and the fan motor to the po wer supply. ● Circuit Board: Controls the operation of the ice machine using input from the sensors and pressure controls. Switches loads on and off thru relays. (Reference Photo Below) ● Potentia[...]

GEM0650/0956/1256 A/W Component Description Page 13 ● Evaporator: A refrigerated vertical tube filled with water and containing a water seal and auger. ● Auger: A solid stainless steel double spiral auger, it pushe s the ice crystals up to the top of the evaporator. ● Water Seal: A two part “face” seal, the top half rotating with the auge[...]

GEM0650/0956/1256 A/W Electrical Sequence Page 14 Electrical Sequence: There are 7 indicator lights on the control board: ● WTR-OK: (Water OK) Green . Normal=Glowing. Glow when there is water in the reservoir. ● PWR-OK: (Power OK) Green . Normal=Glowing. Glows when the power board has power and is functional. ● Service: Red . Normally Off. ?[...]

GEM0650/0956/1256 A/W Operation: Water Page 15 Water enters the machine through the 3/8 inch male flare at the rear of t he cabinet, goes to the water reservoir which it enters through the float valve. The water then goes out the bottom of the reservoir tank to the bottom of the evaporator. Reservoir overflow or evaporator condensation is routed to[...]

GEM0650/0956/1256 A/W Operation: Performance Page 16 Beginning at the compressor, the refrigerant is compressed into a high temperature gas. The discharge line directs this gas to the condenser. At the condenser ( air or water coole d) the gas is cooled by either air or water and then it condenses into a liquid. This high pressure liquid then goes [...]

GEM0650/0956/1256 A/W Sanitizing and Cleaning Page 17 It is the USER’S RESPONSIBILITY to keep the ice machine and ice storage bin in a sanitary condition. Without human intervention, sanitation will not be maintained. Ice machines also r equire occasional cleaning of their water systems with a specifically designed chemical. That chemical dissolv[...]

GEM0650/0956/1256 A/W Bearing Maintenance Page Bearing Maintenance: The bearing in the breaker should also be checked at least two (2) times per year. Switch the machine OFF and check the bearing. 1. Remove the chute cover. 2. Unscrew the ice sweep 18 3. Removing the water shed and unscrewing the breaker cover. Note: Left Hand Threads 5. Inspect th[...]

GEM0650/0956/1256 A/W Sensor Maintenance Page 19 Slide Bin Controls to Remove Bin Control Sensor: The bin control uses devices that se nse light, therefore they must be kept clean enough so that they can “see”. At least twice a year, remove the bin control sensors from the base of the chute, and wipe the inside clean, as illustrated. Water Sens[...]

GEM0650/0956/1256 A/W Maintenance: Air Cooled 20 Clean the air cooled condenser: Air flow on this model is from front to back, so the inside of the ice mach ine will have to be available to clean the air cooled condenser. Use a vacuum cleaner or coil cleaner if needed. DO NOT use a wire br ush. ● Disconnect electrical power , and remove the air f[...]

GEM0650/0956/1256 A/W Auger Maintenance Page 21 Auger: In some areas, the water supply to the ice machine will contain a high concentration of minerals, and that will result in an evaporator and auger becoming coated with these minerals, requiring a more frequent removal than twice per year. If in doubt about the condition of the evaporator and aug[...]

GEM0650/0956/1256 A/W Service Diagnosis Page 22 Symptom Possible Cause Probable Correction No ice is made nothing operates. •Unit off due to no power •Restore Power •Unit off due to master switch in OFF •Switch master Switch to ON position •Unit off due to low water le vel •Check water supply, filter s t r a i n e r , f l o a t v a l v [...]

GEM0650/0956/1256 A/W Service Diagnosis Page 23 Symptom Possible Cause Probable Correction Unit makes ice, but very slowly •High dischar ge pressure because •Clean filter and condenser. of a dirty condenser. •Low capacity because t he auger and •Clean the water system. evaporator are coated with mineral s c a l e . •Low suction pressure d[...]

GEM0650/0956/1256 A/W Cont rol System Diagnostics Page 24 The Control System consists of: ● Control Board ● Water Sensors ● Ice Sensors ● High Pressure Cut Out ● Low Pressure Cut Out If the unit is OFF , check the control board: 1. Is the Power OK light on? If not check power to the unit. If it has power, and the Power OK light is not on,[...]

GEM0650/0956/1256 A/W R&R- Water Reservoir, Bin Control Page 25 Water Reservoir: 1. Disconnect electrical power supply. 2. Shut off water supply to the ice maker. 3. Remove the front panel. 4. Disconnect water inlet tube from reservoir inlet fitting. 5. To remove float valve, push in “locking tabs” as shown and pull float up. Note: The plun[...]

GEM0650/0956/1256 A/W R&R-Bearing and Breaker Page 26 Note : Removal of the auger, water seal, evaporator and gear motor must begin at the top of the assembly. To Remove the Breaker Bearing Assembly: 1. Disconnect electrical power. 2. Remove panels. 3. Push back bail clamp and remove ice chute cover. 4. Unscrew and remove ice sweep. 5. Lift up [...]

GEM0650/0956/1256 A/W R&R-Auger Page 27 To Remove the Auger: 1. Disconnect electrical power. 2. Turn off the water to the machine. 3. Unclip the evaporator drain hose, pull it down and drain the evaporator into the bin or container. 4. Remove the top panel. 5. Swing bail clip down and remove the ice chute cover. 6. Unscrew ice sweep. 7. Remove [...]

GEM0650/0956/1256 A/W R&R-Water Seal Page To Remove the Water Seal: (Assuming all steps to remove the auger have been performed) 1. The gear motor/evaporator assembly will have to be exposed. 2. Remove the four (4) hex head cap screws holding the evaporator to the gear motor assembly. Lift the evaporator up and off the gear motor. 3. Remove the[...]

GEM0650/0956/1256 A/W R&R- Evaporator Page 29 To Replace the Evaporator: (Assuming all steps for removal of the thrust bearing, breaker, auger and water seal have been performed). 1. Recover the refrigerant from the ice machine. 2. Unsweat the refrigerant connections: a. At the thermostatic expansion valve outlet. Evaporator Auger Ice Chute Ice[...]

GEM0650/0956/1256 A/W R&R-Gear Motor Page 30 To Check the Gear Motor: 1. Remove wires from terminals 1 and 2 2. Use an ohmeter to check for continuity. If there is none, replace only the motor. If there is continuity but the motor will not start, check the motor’s start switch. 3. Remove motor end bell or motor stator. With ohnmeter wires att[...]

GEM0650/0956/1256 A/W R&R-Fan Blade and Motor Page 31 To Remove the Condenser Fan Motor Assembly: (GEM0956 Shown) 1. Disconnect electrical power to the ice machine 2. Remove top panel and the service panels. 3. Unplug the fan motor wire leadsfrom the fan motors. 4. Remove the two (2)head bolt from the top end of the fan motor assembly. (Fig 1) [...]

GEM0650/0956/1256 A/W Refrigeration System Service Page 32 Refrigeration Service: General: This ice machine uses R404A refrigerant and polyolester oil. Do NOT use mineral oil in this refrigeration system. ● When the refrigeration system is serviced, a special l iquid line drier is required. It is included wit h replacement compressor. ● R404A i[...]

GEM0650/0956/1256 A/W GEM0650 Wiring Diagram Page 33 Wiring Diagram GEM0650 A/W[...]

GEM0650/0956/1256 A/W GEM0956 Wiring Diagram Page 34 Wiring Diagram GEM0956 A/W[...]

GEM0650/0956/1256 A/W GEM1256 Wiring Diagram Page 35 Wiring Diagram GEM1256 A/W[...]

GEM0650/0956/1256 A/W GEM0655 Wiring Diagram Page 36 Wiring Diagram GEM0655 Air[...]

GEM0650/0956/1256 A/W Service History Page 37 What to Do Before Calling for Service: ● Check the water supply to the ice machine. The ice machine is de signed to shut off if there is no water to it. Check the water filters if there are any. ● Check the power supply to the ice machine. Reset the breaker if it is tripped. ● If both water and po[...]