Electrical Maintenance (Rev. 04/03)
50
5.
If the switch is out of calibration, pressurize the hose
again until the tester indicates 0.7 in. (17.78 mm) H
2
O.
Adjust the screw clockwise or counterclockwise until
the switch closes and the continuity tester indicates a
completed circuit with the gauge reading 0.7 in. (17.78
mm) H
2
O. Release the pressure.
6.
Repeat test procedure several times to be sure the set-
ting is correct.
7.
Remove the test equipment. Install wire on switch ter-
minal and air sensing tubes on air switch. The BLACK
hose from the high pressure or air inlet side of the evap-
orator coil goes on the hose fitting on the side of the air
switch stamped BLACK. The CLEAR hose from the
low pressure or air outlet side of the evaporator coil
goes on the hose fitting on the side of the air switch
stamped CLEAR.
NOTE: Route hoses for continuous slope to avoid conden-
sate traps.
If too much frost continues to accumulate before defrost,
decrease the pressure setting. Turn the adjustment screw
counterclockwise.
If defrost action occurs with too little frost accumulation,
increase the pressure setting. Turn the adjustment screw
clockwise.
1.
Tool No. 204-442
2.
Squeeze Bulb Tool No. 204-494
3.
Continuity Test
Testing Air Switch
Содержание KD-II SR
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Страница 13: ...Safety Precautions Rev 04 03 v AEA40...
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Страница 33: ...Unit Description Rev 04 03 19 1 Evaporator 2 Access Door Rear View Curbside KD II SR 1 2 AEA38...
Страница 37: ...Unit Description Rev 04 03 23 Power Receptacle Box KD II SR 50 AEA42...
Страница 38: ...Unit Description Rev 04 03 24 1 Keypad 2 LED Display THERMOGUARD Remote Control Panel AEA43 1 2...
Страница 42: ...P T System Description Rev 04 03 28 High Voltage Tray No Options High Voltage Tray with Phase Correction...
Страница 44: ...P T System Description Rev 04 03 30 High Voltage Tray with Single Phase Power and Electric Heater...
Страница 58: ...Remote Control Panel Features Rev 04 03 44...
Страница 112: ...Refrigeration Maintenance Rev 04 03 98...
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