Curtis Computer 833 manual

MODEL 833 “FUEL ” GAGE/HOUR METER W/“PUSH- Read Instructions Carefully ! ® ![...]

Saf ety Instructions This instrument was manuf actured and tested according to the applicable technical standards . It complies with all the safety regulations as shipped from the f actory . Installation and star tup must be performed by skilled personnel. F ailure to install and operate the unit in accordance with these instructions may result in [...]

! T ABLE OF CONTENTS P age 1. Model Encodement 2 2. T echnical Specifications 2.1 Electrical 4 2.2 Mechanical 5 2.3 Environmental 6 3. Installation 7 4. Operation 14 5. T roubleshooting 16 6. Maintenance 17[...]

2 1. MODEL ENCODEMENT 833RB vvvv w V oltage 0024 Reset lev el B = 2.09 VPC[...]

3 xy zzzz ! Discharge profile C = Adjustable (See T able 3.) Output J = N.C. holding rela y Contact rating = 3 Amps when continuously closed, 1 Amp when opening 316O O = Cur tis logo[...]

4 2. TECHNICAL SPECIFICA TIONS 2.1 Electrical Operating Range ± 25% of nominal voltage Operating Current V oltage (volts) Nominal Current (mA) Maximum Current (mA) 24 18 28 Rela y Contact Ratings V oltage: 200 VDC (max) Current: 1 ADC (max) (3 ADC max when continuously closed) Po we r: 50 W (max) ![...]

2.2 Mechanical Displa y Battery state-of-charge: 10-bar , tr i-color LED Hour Meter: 6-digit LCD , 5mm high Resolution Hour Meter 99,999.9 Hours Hardware Kit Mounting brack et, thumbnuts or M4 He x nuts (2), lock w ashers (2), mating connector Molex No . 39-01-2085, w/pins No . 39-00-0039, no connectors in bulk shipments . P anel Cutout 52mm, 2 1 /[...]

6 2.3 En vironmental T emperature Operating: - 4 0 ° C t o + 65 ° C (Standard Mode) -10° C to +65° C (Push-to-read Mode) Storage: - 5 0 ° C t o + 9 0 ° C Humidity 95% RH (Non Condensing) at 38°C Shock & Vibration 2.2 G, 20-200 Hz; 20 minute period; X,Y ,Z, 13 cycles each Enclosure IP65 (face) ![...]

7 ! 3. INST ALLA TION The Model 833 Installation Kit includes a pre-assembled mating connector with 5” ter minated wires. Ask for Curtis Part Number 15369002. The Model 833 fits into a dash-panel cutout measuring 2 1 / 16 ” (52 mm). Te r minal Assignment (see diagr am on page 13) Pin 8 = Battery + Pin 8 to battery +[...]

8 ! Pin 5 = Battery – Connect to battery ground as close to batter y as possible . Pin 2 = Keys witch The ke yswitch turns on and off the LED displa y of the battery discharge indicator. Monitoring of the batter y continues when Pin 2 is turned off and the display is not lit. The hour meter display is unaff ected by Pin 2, although it cannot accu[...]

9 Pin 3 = Relay (+) Pin 3 connects in series with the lift coil circuit (or the circuit to be switched at empty). For holding rela y (J), Pin 3 must be electrically closer to batter y + than Pin 4 Pin 4 = Relay (–) Pin 4 also connects in series with the circuit to be s witched at empty .[...]

Ta b le 1. Hour Meter Contr ol Lines & Impedance Specifications Model Lo w V olt a ge High V oltage Min. Impedance Maximum Minim um HRM+ HRM- 24 VDC 5.0 VDC 15.0 VDC 90 k Ω 30 k Ω Ta b le 2. Hour Meter Contr ol Logic Key HRM HRM HRM Hour Icon s witch (+) (+) (+) meter Off x x x Display only Steady On V H xx On Flashing On x V H xO nF lashin[...]

! 11 NO TE : Fuses and Wires Regulations may require that the Model 833 be fused. If installing a fuse, use a 10A fuse wired with 1.5mm or equivalent wire . The voltage drop across the fuse , its holder , and connectors must be less than 1% of the nominal system voltage . Discharge Adjustments Ta b le 3 lists the voltages per cell under load that c[...]

12 CUR TIS Model 833 Rear Vie w ![...]

13 Connections f or T ypical Model 833 Application V ehicle system voltage is the higher of the two oper ating vo ltages of a dual voltage unit. Hour meter measures “ke yswitch on” time. ![...]

14 4. OPERA TION Displa y The Cur tis Model 833 combines in one instrument a completely solid state LED battery state-of-charge indicator , an LCD hour meter , and lift lockout. Only when battery is proper ly charged is right most LED (1) lit. As battery’s state-of-charge decreases , successive LEDs light up , one at a time. 2nd from left LED fla[...]

15 Push-to-read When the front button is depressed, the LCD will displa y the hour meter reading for 6 seconds min. The hour meter will not accumulate time during this operation. Reset type/le v el (after or during recharge) CTR = Charge T racking Reset If the gage is connected to the battery dur ing recharge, the gage will track the battery charge[...]

16 5. T r oubleshooting The follo wing checklist should help y ou to troubleshoot an y problems with the instrument. Problem P ossible Causes No display T er minals not connected or improper voltage Stays at FULL Instrument voltage does not match battery voltage, B+ connected to the wrong terminal Will not reset Instrument voltage does not match ba[...]

17 6. Maintenance Model 833 Series is not ser viceable in the field. Units returned to the factory within the warranty period (see inside backco ver) will be replaced without charge.[...]

Guarantee - Cur tis Instruments’ products and/or components are guaranteed against def ects in workmanship and material f or a period of two y ears, or as defined in the individual product literature, from date of shipment from our f actory , when applied in a proper application within specified ratings. This guarantee is limited to repair or rep[...]

CURTIS INSTRUMENTS, INC. 200 Kisco A venue, Mt. Kisco, NY 10549 T el. (914) 666-2971 • FAX (914) 666-2188 53024 REV A 7/01[...]