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Unit Description (Rev. 04/03)
8
•
Engine Tachometer Display
•
Battery Voltage Display
•
Phase Lockout (Model 50)
•
Phase Correction (Optional, Model 50 Only)
•
Automatic Diesel/Electric Selection
•
Select up to 13 Readouts Covering All Key Operating
Parameters
•
Phase Indication
•
Programmable Setpoint Range
•
Low Speed Start (Programmable)
•
High Speed Pulldown (Programmable)
•
Choice of Units of Measure
•
Low Speed Lockin
UNIT INSTRUMENTS
1.
MICROPROCESSOR LCD DISPLAY. The LCD
display normally shows the setpoint, the return air tem-
perature, and any active icons, which are:
•
Cool
•
Heat
•
Defrost
•
Setpoint
•
CYCLE-SENTRY
•
Alarm
•
Electric (Optional)
Pressing the SELECT key causes the display to show
the other sensor readings.
2.
ALARM ICON. The alarm icon comes on whenever
there is an alarm code stored in the microprocessor
memory.
3.
RECEIVER TANK SIGHT GLASS. The receiver
tank sight glass is used to check the amount of refriger-
ant in the system, and the moisture content of the
refrigerant.
4.
COMPRESSOR OIL SIGHT GLASS. The compres-
sor oil sight glass is used to check the relative level of
compressor oil in the compressor sump.
5.
AIR RESTRICTION INDICATOR. An air restric-
tion indicator is attached to the intake manifold. Visu-
ally inspect the restriction indicator periodically to
assure the air filter is not restricted. Service the air filter
when the yellow diaphragm indicates 22 in. of water
column. Press the button on the top of the restriction
indicator after servicing the air filter.
UNIT PROTECTION DEVICES
1.
FUSES. A number of fuses are located on the relay
board. The sizes and functions are shown in Table 1.
Table 1: Relay Board Fuse Size and Function
Fuse
Size
Function
F200
3A
2P Power to Microprocessor
F202
3A
Oil Level Switch
F300
3A
Pilot Solenoid
F301
3A
TherMax Solenoid
F302
3A
Alternator Relay
F303
3A
Damper Relay
F304
3A
Starter Relay
F305
3A
On/Run Relay
F306
3A
Preheat Relay
F307
3A
Not Used
F308
3A
Not Used
F309
15A
Alternator Excitation
F310
15A
Damper Solenoid
F311
3A
Motor Reset Solenoid
F400
3A
Motor Starter
F401
10A
Fuel Solenoid and Fuel Pump
F402
10A
Throttle Solenoid
F403
3A
Heater Contactor
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...