7–55
62-11640
00128
LOW/UNBALANCED A/C AMPS
• ACTIVATION: The compressor is on and AC Current Sensor 1, 2 or 3 is less than 5 amps for 10 seconds.
OR, if the difference between AC Current 1 and AC Current 2 2
−
3 and 1
−
3 is greater than 10 amps for 10
seconds.
• UNIT CONTROL: Engine Operation: Engine and unit shutdown and alarm.
Electric Operation: Refrigeration system shutdown and alarm with PSCON still ener-
gized.
• RESET CONDITION: Change unit to Electric Operation when AC Current Sensor 1 and 2 is greater than
7 amps for 5 minutes AND difference between AC Current 1 and AC Current 2 is less than 7 amps for 5
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.
CORRECTIVE ACTIONS:
1.
Perform Pretrip Check
Clear Active Alarm list, then run Pretrip & check for any new alarms. Any active alarms must be cor-
rected and cleared before proceeding.
2.
Check Current Draw
a. Use a clamp around A/C ammeter to check amps at power wires. Must be 1.0 Amp of reading in
Unit Data.
b. Check A/C amps with compressor running. Must be greater than 5 Amps.
c. Compare A/C Amp readings between L1-L2-L3. Maximum allowable difference is 10 Amps.
3.
Check Wiring
Inspect wiring from CT to 1CCB. Check related Splice Points. (See wiring schematic
Verify there is no physical damage to harness, and no damage, moisture, or corrosion in connectors.
00129
CHECK ENG COOLANT SENSOR
• ACTIVATION: Engine Coolant Temperature Sensor (ENCT) is not within the range of -58 to +266°F (-50
to +130°C).
• UNIT CONTROL: Engine Operation: Alarm Only.
Electric Operation: This alarm does not activate in electric operation.
• RESET CONDITION: Auto reset when sensor is in range or alarm may be manually reset using the dis-
play mounted keys 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 (refer to reset condition above). Operate the unit through the appropriate modes to see
if any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1.
Check Sensor
a. Inspect sensor & connector. Verify there is no damage to sensor, and no damage, moisture, or cor-
rosion in connector.
b. Check sensor resistance. (Refer to Note 3 in
Section, page 7-2.) 10,000 Ohms @ 77°F
for chart of sensor resistances.
2.
Check Sensor Wiring
a. Inspect connector pins & terminals at ENCU. (See wiring schematic
). Verify there is
no physical damage to harness, and no damage, moisture, or corrosion in connectors.
b. Place the system in PC Mode. Refer to Note 2 in
Section, page 7-2. Disconnect sensor
from harness. Check for 3.0 ± 0.1 VDC volts at harness plug between pins. This verifies micropro-
cessor output and wiring connections to sensor.
Summary of Contents for Vector 8500
Page 23: ...62 11640 1 6 1 3 SAFETY DECALS ...
Page 24: ...1 7 62 11640 62 03958 ...
Page 25: ...62 11640 1 8 ...
Page 26: ...1 9 62 11640 ...
Page 27: ...62 11640 1 10 ...
Page 125: ...62 11640 SECTION 6 MESSAGECENTER PARAGRAPH NUMBER Page 6 1 MESSAGECENTER MESSAGES 6 1 ...
Page 321: ......
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