Sub-Zero Wolf 506UI, Руководство по обслуживанию

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Page 29
Component Access & Removal
Model 506 (UC Ice Maker)
Model 506 (UC Ice Maker)
4-4
#3752200 - Revision B - May, 2006
Evaporator Thermostat
The evaporator thermostat is adjustable for altitude cor-
rection. In the warm position, the thermostat cuts in at
38°F ± 2° and cuts out at 10.5°F ± 4°. In the cold posi-
tion, the thermostat cuts in at 38°F± 2°, and cuts out at
-3°F± 2.5°
To test, method 1:
1. Remove wire leads.
2. Use an ohmmeter set on the R x 1 scale.
3. Feel the evaporator freezing plate. Then check
across the terminals. (See Figure 4-4)
If evaporator is cold:
If evaporator is warm:
To test, method 2:
1. Remove wire lead from terminal 6 on the service
control switch (disabling the water pump). (See
Figure 4-5)
2. Reassemble the unit.
3. Reconnect the power supply to unit.
4. Turn the control service switch to the ”ON” position.
5. Feel the evaporator plate. It should first get cold,
then warm.
With the load removed from the evaporator, the evapo-
rator thermostat should cycle into the HARVEST cycle
within a matter of minutes.
Figure 4-4. Evaporator Thermostat Test Locations
Figure 4-5. Remove Wire From Terminal 6
Terminal 6
Copper Plate
Terminal 3
Terminal 1
Terminal 2