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7-14
62-11039
Alarm
NO.
Steps
ALARM / CAUSE
CORRECTIVE ACTION
22
LOW SUCTION SUPERHEAT
•
TRIGGER ON: Compressor suction superheat less than 9
°
F (5
°
C) for more than 2 minutes.
•
UNIT CONTROL: Engine operation: engine and unit shutdown and alarm. Standby operation:
UNIT CONTROL: Engine operation: engine and unit shutdown and alarm. Standby operation:
refrigeration system shutdown and alarm with PSCON still energized.
•
RESET CONDITION: Auto reset after 15 minutes, or alarm may be manually reset via keypad or by
turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active alarm
should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if any active
alarm occurs. Continue with the steps below as necessary.
1.
Check System Pressures
a. Install Manifold Test Set and check and
compare compressor discharge &
suction pressures with those shown on
the microprocessor controller.
Suction & Discharge Pressures must have the same
reading on gauges & on micro display.
NOTE: Microprocessor suction pressure reading has
a maximum value of 100 psig (7.5 bar)
2.
Restricted Evaporator Airflow
a. Check for restricted evaporator airflow
in all enabled compartments.
Check for proper Evaporator Fan operation
Check data sheet for proper defrost air switch specs and
air switch hoses
Check for restricted bulkhead or air chute installation
3.
Check For Any Ice On Compartment 2 Or 3 Suction Lines
a. Check fans for compartment.
Must be running and blow in the correct direction.
b. Run through defrost.
Clean all ice off coil.
c. Recheck for ice on suction line.
If suction line continues to show signs of ice, check
expansion valve superheat.
4.
Run Pre--Trip. See Alarm 18, Step 4
5.
Check EVXV
a. Check for defective EVXV
See Section 8.17
Summary of Contents for VECTOR 1800 MT
Page 1: ......
Page 2: ...OPERATION SERVICE MANUAL for VECTOR 1800 MT Trailer Multi Temp Refrigeration Units ...
Page 19: ...1 5 62 11039 1 3 SAFETY DECALS ...
Page 20: ...1 6 62 11039 62 03958 00 Heat Warning 62 03957 01 High Voltage 62 60280 00 Standby Safety ...
Page 21: ...1 7 62 11039 ...
Page 303: ...10 1 62 11039 ...
Page 310: ...10 8 62 11039 BASED ON ENGINEERING SCHEMATIC 62 60926 REV G NEXT SHT ...
Page 311: ...10 9 62 11039 FROM PREVIOUS SHT ...