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Electrical Maintenance (Rev. 04/03)
49
With an external ammeter connected in series, a shorted
glow plug will show excessive current flow (more than
12 amps) when the PREHEAT switch is pressed or when
CB1 circuit breaker is tripped, check each plug.
CONDENSER/EVAPORATOR FAN
ROTATION (Electric Standby Operation)
The condenser and evaporator fans are belt driven. On elec-
tric standby operation, check for correct fan rotation by
placing a small cloth or sheet of paper against the condenser
fan grille on the front of the unit. Correct rotation will hold
the cloth or paper against the grille. Improper rotation will
blow the cloth or paper away from the grille. To correct
improper condenser fan rotation, reverse any two power
cord leads at the power cord. (DO NOT move the ground
wire which is normally GREEN.)
1.
Ohmmeter
2.
1.5 Ohms
3.
Remove Bar
Checking Glow Plugs
Defrost Air Switch Checkout and
Adjustment
Before testing or adjusting the air switch, check the clear
plastic tubing and black plastic tubing to the evaporator coil.
Make sure they are not obstructed or crushed. Check the
probes in the evaporator housing to be sure they are in
proper position, and make sure they are not obstructed.
1.
Remove plastic sensing tubing from both sides of the
defrost air switch.
2.
Disconnect one wire at switch terminal. Connect test
light or continuity tester to the two terminals used on
the switch.
3.
Install test equipment (TK 204-442 and TK 204-494)
onto the hose fitting on the side of the air switch
stamped BLACK.
4.
Pressurize the hose until the continuity tester indicates
a completed circuit. Now read the dial of the test gauge.
This is the setpoint of the air switch (correct reading is
0.7 ± 0.05 in. [17.78 ± 1.27 mm] H
2
O). Release the
pressure.
1.
Adjustment Screw
Air Switch
Summary of Contents for KD-II SR
Page 4: ......
Page 8: ......
Page 13: ...Safety Precautions Rev 04 03 v AEA40...
Page 14: ...Safety Precautions Rev 04 03 vi AEA38...
Page 33: ...Unit Description Rev 04 03 19 1 Evaporator 2 Access Door Rear View Curbside KD II SR 1 2 AEA38...
Page 37: ...Unit Description Rev 04 03 23 Power Receptacle Box KD II SR 50 AEA42...
Page 58: ...Remote Control Panel Features Rev 04 03 44...
Page 112: ...Refrigeration Maintenance Rev 04 03 98...
Page 120: ...106...
Page 146: ...132...
Page 156: ...142...
Page 162: ...148...
Page 170: ...156...
Page 172: ...158...
Page 173: ...159 KD II 30 Schematic Diagram Page 1 of 2...
Page 174: ...160 KD II 30 Schematic Diagram Page 2 of 2...
Page 175: ...161 KD II 30 Wiring Diagram Page 1 of 2...
Page 176: ...162 KD II 30 Wiring Diagram Page 2 of 2...
Page 177: ...163 KD II 50 Schematic Diagram Page 1 of 2...
Page 178: ...164 KD II 50 Schematic Diagram Page 2 of 2...
Page 179: ...165 KD II 50 Wiring Diagram Page 1 of 2...
Page 180: ...166 KD II 50 Wiring Diagram Page 2 of 2...
Page 181: ...167 KD II 50 SR 230 1 60 Wiring Diagram Page 1 of 2...
Page 182: ...168 KD II 50 SR 230 1 60 Wiring Diagram Page 2 of 2...