Jackson 10 Series, Инструкция по установке, эксплуатации и обслуживанию, Страница: 33 / 78

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26
SERVICE
PROCEDURES
WASH TANK
HEATER SYSTEM
The wash tank heater control system is electrically connected in the circuit to operate
on 208-230 Volts. The heat circuit is controlled by a heater switch (mounted right-front
panel), water level control (mounted top-inside control box), and thermostat (mounted
underneath the right-front leg). When higher temperature is required, power is applied to
the heater element through the above controls. Should the wash tank thermometer read
too high or too low, follow checkout below.
CHECKOUT OF HEATER SYSTEM FOR WASH TANK (refer to diagram on next page)
NOTE: THE FOLLOWING CHECKOUT SHOULD BE DONE BY A QUALIFIED
SERVICE PERSON OR ELECTRICIAN.
1. Ready the machine for normal dish washing operation with the wash tank water at
proper level.
2. If temperature is too high, adjust thermostat using thermostat instructions on page
23.
3. If temperature is too low, adjust thermostat using thermostat instructions on page
23, then:
NOTE: ELECTRICAL POWER STILL APPLIED, SO BE CAREFUL. (Remove the
control panel from the control box by loosening the four screws holding it.
Hang the control panel using the two right-hand screws with the back side of
the panel outward. Refer to page 22 for replacement of switch in control panel.)
a. With circuit breaker, master switch, and heater switch on, check power to
machine at position 1; terminal board “X” should read 208-230 Volts. If not, check
customer’s circuit breaker; if defective, replace.
b. Wash temperature should be 130°F or less to proceed.
c. Observe water level control, letter “D.” Turn heater switch on and off several
timer. Relay and contact points (inside clear case on heat water level control)
should move back and forth.
1. If water level control relay doesn’t close, (contact points don’t move in step c.
above):
a. Refer to page 28.
2. If water level control relay does close, proceed with heater switch on and refer to
diagram on next page.
a. Check voltage at position 1 on terminal board “X”. Voltage should be 208-230
Volts.
b. Check position 2, there should be no voltage. If there is voltage, then adjust
thermostat (refer to page 23).
c. Check position 3, voltage should be 208-230 Volts. If not, check wiring for
loose connections or a break.
d. Temperature should rise slowly; a check with an amp probe would indicate if
the element is drawing the correct amperage. Replace element if defective.
WASH TANK HEATER SYSTEM