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Diagnosis: Troubleshooting, Warnings and Alarm Codes
229
07
Compressor Current Too Low
• Occurs during pretrip (PTI) or function test only.
• During compressor test, if Compressor power
consumption is 25% below expected current draw
or compressor phase current level differs 33% or
more.
• If both alarm #6 and #7 is active this indicates too
high phase difference.
• Expected compressor current is a function of the
surrounding conditions.
• Indicates:
• Defective or open high pressure cutout switch.
• Defective or open low pressure cutout switch or
transmitter if mounted.
• Defective compressor relay.
• Defective volt or amp meter on power module.
• Low refrigerant charge
• Defective compressor.
• Defective volt or amp meter on power module.
• Inaccurate condenser or evaporator temperature
measurement.
• Defective or open compressor motor internal
over temperature protection switch.
• Check evaporator, condenser sensor
temperatures for correct value (± 5 °C [± 9 F])
by viewing Data menu.
• To determine the current draw measurement,
enter Manual Function Test menu. Start and
check current draw of the following
components separately and together:
compressor, compressor full loaded,
condenser fan and evaporator fan (high or
low).
• Check discharge and suction pressure gauge
readings.
• Check power supply volts on all 3 phases.
10
Heater Current Too High
• Occurs during pretrip (PTI) or function test only.
• Heater power consumption is 25% above expected
current draw or phase current level differs 33% or
more.
• If both alarm #10 and #11 is active this indicates too
high phase difference.
• Expected heater current is a function of the heating
element resistance and the power supply voltage.
• The may be equipped with extended
heating capability.
• Normal heating element 4kw@460VAC
-
above approximately 6,3Amp / 5,3Amp.
• Extended heating element 6kw@460VAC
-
above approximately 9,4Amp / 8,1Amp.
• Indicates:
• Incorrect heaters or heater connections.
• Defective heater element.
• Defective volt or amp meter on power module.
• Enter Manual Function Test and turn heaters
on. Check current draw on each phase.
Evaluate current draw in relation to expected
values.
• Enter configuration menu and check the
heating element setting.
• Check heater resistance.
• The electrical resistance towards chassis must
be above meg ohm (M
Ω
) range.
• Normal heating element 4kw@460VAC
-
expects 5,0Amp@460VAC
-
expects 4,3Amp@400VAC
-
expected resistance 99
Ω
on each leg.
• Extended heating element 6kw@460VAC
-
expects 7,5Amp@460VAC
-
expects 6,5Amp@400VAC
-
expected resistance 66
Ω
on each leg.
Alarm Codes, Descriptions and Corrective Actions (Continued)
Code
Description
Corrective Action
Summary of Contents for 098203
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Page 3: ...MAGNUM TK 60275 4 MM Rev 3 08 15 Copyright 2012 Ingersoll Rand EMEIA Printed in Ireland...
Page 193: ...Refrigeration Maintenance 191 Figure 163 Filter Drier...
Page 200: ...Refrigeration Maintenance 198 Figure 169 Receiver Tank Figure 170 Water Cooled Condenser Tank...
Page 257: ...255 Schematic Diagram RELEASED 19 Sep 2013...
Page 258: ...256 Wiring Diagram Page 1 of 2 RELEASED 19 Sep 2013...
Page 259: ...257 Wiring Diagram Page 2 of 2 RELEASED 19 Sep 2013...
Page 263: ......