Service manual

Electrical Specifications Section 7
7-2
Light Switch
Function
Turns the interior cabinet light on as the reach-in
door is opened.
Specifications
Single pole push button switch.
Check Procedures
1. Check for proper line voltage (± 10%).
2. Inspect the switch for proper wiring.
3. Inspect the terminals for clean, tight
connections.
4. Check across the switch terminals with a
voltmeter. Replace the switch if you do not
obtain the results below:
Door
Position
N.O.
Contacts
N.C.
Contacts
Closed 0 Line
Open Line 0
Defrost Termination/Fan Delay Switch
Function
Terminates the defrost cycle and delays the start of
the evaporator fan(s) after defrost.
Specifications
Thermodisc
Open Temperature 55±60°F (12.8±15.6°C)
Close Temperature 35±60°F (1.7±15.6°C)
Check Procedures
1. Hook a voltmeter across the N.O. terminals. If,
during the defrost cycle, the bimetal disc does
not open when the evaporator reaches the
specified temperature, replace the thermostat.
2. Hook a voltmeter across the N.C. terminals. If,
after the defrost cycle, the bimeter disc does not
close when the evaporator coil reaches the
specified temperature, replace the thermostat.