Troubleshooting

USING THE RPS-1in the OM-420

BATTERY REPLACEMENT

NOTE: USE CAUTION IN WORKING WITH THE GEL-CELL BATTERIES TO PREVENT SHORTING OF THE TERMINALS OR WIRING AT ALL TIMES!

Under reasonable operating conditions and temperatures, the two gel-cell batteries should provide several hundred charge/discharge cycles. When the batteries will not charge completely and/or they discharge rapidly, they will need to be replaced. To remove the batteries, follow these steps

1.TURN THE MAIN POWER SWITCH OFF

2.Unscrew the four thumbscrews from the battery pack cover (On the inside of the enclosure door).

3.Disconnect the two plastic wiring connectors.

4.Remove the old batteries and insert the new ones.

5.Reconnect the two plastic wiring connectors, Ensure that all wires match colors.

6.Tuck the connectors between the batteries and the edge of the enclosure door

7.Replace cover & install thumbscrews

CAUTION: CHECK THESE CONNECTIONS BEFORE TURNING THE MAIN POWER SWITCH ON, INCORRECT CONNECTION WILL RESULT IN PERMANENT DAMAGE TO THE RPS-1.

SYMPTOM: OUTPUT VOLTAGE IS LOW

PROBLEM: Batteries are discharged

SOLUTION: Recharge the batteries

PROBLEM: Power Supply is in current limiting mode

SOLUTION: Decrease the load current draw by reducing supply voltage (if compatible with sensor requirements), switching some of the load to the other Power Supply.

PROBLEM: More than one OUTPUT VOLTAGE PROGRAMMING SWITCH is ON.

SOLUTION: Review the OUTPUT VOLTAGE setting table and correct the switch settings.

PROBLEM: Desired power supply output voltage is 12 VDC or greater and the MAIN POWER SWITCH is set to 12 VDC.

SOLUTION: Switch the MAIN POWER SWITCH to 24 VDC.

SYMPTOM: OUTPUT VOLTAGE IS CORRECT BUT VOLTAGE AT SENSOR IS LOW

PROBLEM: Excessive voltage drop in sensor wiring

SOLUTION: Check for bad connections in wiring loop

SOLUTION: Use larger gage wire (18 AWG should be sufficient for most applications)

SYMPTOM: STATE-OF-CHARGE INDICATOR DOES NOT LIGHT

PROBLEM: The MAIN POWER SWITCH is OFF

SOLUTION: Switch to 12VDC or 24VDC position

Omega Engineering Inc.

Stamford, CT