Jackson 10 Series, Инструкция по установке, эксплуатации и обслуживанию, Страница: 36 / 78

07610-002-41-09-F
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The water level control is used on this machine in conjunction with a sensing probe to
detect the water level in the rinse tank and to control automatic re
fi lling.
When the water level decreases as the rinse pump starts to push water through the rinse
tubes, the probe sends a signal to the control which deactivates the plug-in relay (located
on the control circuit board). When the relay deactivates, its contacts return to a normally
closed position. The solenoid valve is connected in series with these contacts and at this
time energizes to allow water to re
fi ll the rinse tank to the proper level. Then the relay
activates and opens the normally closed contacts to deactivate the solenoid valve.
SYMPTOMS OF LEVEL CONTROL FAILURE:
1. Water level in rinse tank is not maintained; indicated by diminishing rinse spray
halfway through its cycle.
2. Water continues to run at the end of the rinse cycle or water continues to spray out
of the rinse tubes.
PROCEED WITH CHECKOUT (refer to diagram below):
1. Remove power to machine by turning circuit breaker to its “off” position.
2. Remove 4 screws holding control panel on control box. Remove panel and attach
to one side of control box with 2 screws.
3. Locate water level control board and disconnect wires going to terminals marked C
and H. Mark and insulate wires for correct placement.
4. Re-apply power to machine. With an insulated jumper wire, touch jumper between
terminals C and H; relay in clear plastic cube should activate as wire is touched to
terminals. Observe relay contacts, they should pull in.
5. If relay operates, the control can be deemed operational and other causes should
be explored (solenoid valve not functioning properly, loose or broken wires in circuit,
sensing probe malfunctioning, or green ground wire is loose).
6. If relay does not operate, replace control.
7. Remove sensing probe from rinse tank and clean any deposits that may have built
up causing it to malfunction.
8. If solenoid valve does not open or remains open, see instructions on page 55 to
check, clean, or repair.
9. Remove power to machine and replace wires that were removed in above steps.
Water Level Control Board
06680-200-01-19
WATER LEVEL
CONTROL
(CONTINUED)
SERVICE
PROCEDURES
WATER LEVEL CONTROL FOR APRB