Jackson ECOLAB ES-2000 Installation & Operation Manual page 34

SECTION 4: TROUBLESHOOTING
COMMON PROBLEMS
Problem: Dishmachine runs with the door open.
1. The door switch may be shorted out. With the machine off, open the doors, and with both wires to the door switch unplugged,
measure the continuity between the wires on the switch. If there is continuity, replace the switch.
2. Faulty wash relay. Turn the machine off. If the wash relay does not release, replace it.
3. Faulty control relay. With the power off, remove the WHITE/RED and BLACK/YELLOW wires form the control relay termi-
nals #9 and #6. Measure the continuity between the terminals. If there is continuity, replace the relay.
Problem: Low wash water pressure.
1. Water level is too low. Increase the fill time, or decrease the drain time, and verify that incoming water pressure is 20±5 PSI.
2. Sump strainer clogged. Clean and re-install.
3. Obstruction in either the wash pump housing or the wash manifold. Disassemble and clear obstruction.
4. Clogged wash arm nozzles. Remove the wash arms, clean the nozzles, then re-install.
Problem: Dishmachine keeps tripping the service breaker.
1. The power supply may be shorting to ground. Check for loose wires or burned connections.
2. Faulty door switch or detergent safety switch. Check for a loose or wet connection at the switch and wire connectors. Bypass
the switch to verify that it is indeed the problem. Replace the switch if necessary.
3. Pump impeller jammed. Clear the impeller.
4. Wash motor faulty. Check the motor voltage and amperage draw. If amperage draw is over 12 amps, replace the motor.
Problem: Dishmachine will not drain.
1. Loose wire connection. Verify that all wire connections are tight.
2. Drain hole may be obstructed. Remove the obstruction.
3. Not enough time for unit to drain. Adjust the drain cam on the timer.
4. Drain rod bent or binding. Repair the rod, or replace as necessary.
5. Faulty drain microswitch on the cam timer. With the power off and the drain cam in the "home" position, remove the
WHITE/YELLOW wire from the microswitch. Measure the continuity between the ORANGE wire on the microswitch and the tab
that the WHITE/YELLOW wire was connected to. If there is no continuity, replace the switch.
Problem: Dishmachine will not hold water.
1. Faulty drain ball. Replace as necessary.
2. Drain hole may be obstructed. Remove the obstruction.
3. Drain rod bent or binding. Repair the rod, or replace as necessary.
Problem: Sanitizer pump runs continuously.
1. Shorted prime switch. If there is not 120 volts between the GREY and WHITE/RED wires to the prime switch, replace it.
2. Shorted sanitizer microswitch on the cam timer. If there is not 120 volts between the ORANGE and GREY wires on the san-
itizer microswitch when the switch is out of the "home" position, replace the switch.
Problem: Sanitizer pump does not run during the cycle, but does run when primed.
1. Loose or broken wire. Verify that all wires are whole and that their connections are tight.
2. Faulty sanitizer microswitch on the cam timer. With the sanitizer cam in the "home" position, measure the voltage between
the ORANGE and GREY wires on the microswitch. If it reads 120 volts, replace the microswitch.
Problem: Prime switch does not activate the sanitizer pump.
1. Faulty prime switch. With the prime switch in the prime position, check for voltage between the GREY and the WHITE/RED
wires to the prime switch. If it reads 120 volts, replace the switch.
2. Faulty delime switch. With the delime switch in the DELIME position, check for voltage between the WHITE/BLACK and
ES-2000 & ES-4000 Series Installation/Operation Manual 7610-011-35-10
Issued: 10-29-2007 Revised: N/A
28