CLARCOR UAS DPC Manual do Proprietário - Página 8

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1. Range Adjustments

Revised 10/10

1.5 TROUBLESHOOTING GUIDE

Use the troubleshooting guide (below) to correct any problems that occur with your dust collection unit. If the problem or

condition continues, contact UAS customer service at 1-800-252-4647.

PROBLEM

Timer board does not

operate.

Timer board does not pulse in

continuous mode.

Timer board does not pulse in

pressure switch mode.

Downtime cleaning does not

function.

Expanded operation does not

function.

UAS 10 Channel Pulse Timer Board Test Procedure:

The firmware for the UAS 10 Channel Pulse Timer board

contains a test routine for easily testing all of the inputs and

outputs on the circuit board. This routine was included in

order to reduce the testing time of each circuit board in the

manufacturing process. Caution must be used when testing

a circuit board with AC power applied. This procedure should

be performed only by personnel with sufficient training or

experience that they can do it safely.

Test Procedure:

The steps of the test must be done in order. Skipping steps

does not work.

1. Turn off or disconnect AC power.

2. Place a jumper across the J2 (TEST) header pins.

3. Set all rotary switches to the 0 position.

4. Set SW2 to the PS position.

5. Remove any connections to the MOT AUX and PRESS

SW terminals.

6. Apply AC power.

7. If both the PWR and CLEAN lights are flashing re-

confirm steps 3 – 5. If steps 3 – 5 are correct and both

lights continue to flash, there is a problem causing an

incorrect input to the microcontroller.

8. If the PWR light is flashing and the CLEAN light is on

steady, continue with the following steps.

1. Be sure the proper power is applied to the terminals at TB1 at all times.

2. Be sure an isolated normally open motor starter auxiliary dry contact is wired to the MOT

AUX terminals on TB3.

3. Be sure PULSE DELAY and PULSE DURATION are not set to 0 (zero).

4. Check F1 and F2 fuses for open circuit, replace if blown.

1. Be sure SW2 is set to CONTINUOUS mode.

1. Be sure an isolated normally open pressure switch contact is wired to the PRESS SW

terminals on TB3.

2. Be sure SW2 is set to PS mode.

3. Be sure filter pressure drop is above pressure switch setpoint.

1. Be sure power is applied to the terminals on TB1 even after the motor starter is shut down.

2. Be sure the isolated normally open motor starter auxiliary contact is wired to the MOT AUX

terminals on TB3. (Downtime cleaning begins when the blower motor starter is shut down.)

3. Be sure DT CYCLES is not set to 0 (zero).

1. Make sure one timer board has SW3 set to MASTER and the other timer board has SW3 set

to SLAVE.

2. Be sure MOT AUX and HANDSHAKING wiring is jumped from one board to the other (see

Figure 3).

3. Be sure PRESS SW (if used) is jumped from one board to the other (see Figure 3).

4. Be sure SW2 switch on both boards, is set to either CONTINUOUS or PS mode.

(Both boards should have the same selection.)