Diagnosis: Troubleshooting, Warnings and Alarm Codes
233
17
Condenser Fan Current Too Low
• Occurs during pretrip (PTI) or function test only.
• Fan power consumption is 33% below expected
current draw or phase current level differs 33% or
more.
• If both alarm #16 and #17 is active this indicates
too high phase difference.
• Expected fan current is a function of the power line
frequency and the supply voltage.
• Above approximately
-
0,5Amp@400VAC/50Hz
-
0,6Amp@460VAC/60Hz
• Indicates:
• Defective condenser fan motor relay.
• Incorrect motor or motor connections.
• Defective or open fan motor internal over
temperature protection switch.
• Defective volt or amp meter on power module.
• Enter Manual Function Test and start
condenser fan. Make sure the fan starts.
• Check fan motor volts and amps.
• Expect
-
1,0Amp@400VAC/50Hz
-
1,2Amp@460VAC/60Hz
18
Power Supply Phase Error
• Shutdown Alarm
• The power module is not capable of detecting the
rotation direction.
• Indicates:
• Phase(s) missing at the power supply line.
• Defective fuse at power module.
• Power module failure.
• Heating element problem (used for current load
to decide the rotation direction).
• Check fuses on the power module.
• Check power line voltage on all 3 phases.
• Use the tester to detect the problem.
• Replace power module.
19
Temperature Too Far From Setpoint
• · Occurs during Normal Run only.
• After 75 minutes of operation, supply or return air
temperature is not in-range and does not approach
setpoint within preset pull-down rate.
• Indicates:
• Ice or frost on evaporator coil.
• Low refrigerant charge.
• Air exchange vent open too much.
• Container air leakage (doors open).
• Use DATA menu to check supply and return
air sensor temperatures.
• Compare temperatures to evaluate unit
cooling capacity and performance.
• Temperature difference should be 4 C to 6 C
(7.2 F to 10.8 F).
• Open evaporator door. Inspect coil for ice or
frost and initiate manual defrost if necessary.
• Check refrigerant charge
NOTE: This alarm can be activated if the
supply or return air temperature varies,
even if the mean temperature does
approach setpoint.
Alarm Codes, Descriptions and Corrective Actions (Continued)
Code
Description
Corrective Action
Содержание 098203
Страница 2: ......
Страница 3: ...MAGNUM TK 60275 4 MM Rev 3 08 15 Copyright 2012 Ingersoll Rand EMEIA Printed in Ireland...
Страница 193: ...Refrigeration Maintenance 191 Figure 163 Filter Drier...
Страница 200: ...Refrigeration Maintenance 198 Figure 169 Receiver Tank Figure 170 Water Cooled Condenser Tank...
Страница 257: ...255 Schematic Diagram RELEASED 19 Sep 2013...
Страница 258: ...256 Wiring Diagram Page 1 of 2 RELEASED 19 Sep 2013...
Страница 259: ...257 Wiring Diagram Page 2 of 2 RELEASED 19 Sep 2013...
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