62-11640
8–38
8.9.9
Evaporator Heaters
NOTE
A good preliminary test of the heaters is to
run a Pretrip and check for heater alarms.
1. Ensure the unit will not start automatically by
disabling any two way communication and plac-
ing the STOP/RUN-OFF switch in the OFF posi-
tion. Disconnect the high voltage source and
lockout/tagout the receptacle.
2. Remove the lower back panel or coil cover as
applicable.
3. To determine which heater assembly needs to
be replaced, disconnect the suspect heater
assembly and check pin to pin resistance. For
heater resistance refer to
4. Remove the heater mounting brackets.
5. Remove and replace faulty heater. If removing a
drain pan heater, carefully remove heater from
the clips on the drain pan.
6. When reinstalling brackets torque to 6 to 7 ft/lbs
(8.1 to 9.5 Nm). Rods should move freely from
side to side when installed.
7. Route and secure electrical cables. Route along
the lower side of the heat exchanger at the 5
o’clock position (on the side closest to the evap-
orator coil). Ensure that all wires are clear of
heaters.
8.9.10
Evaporator Blower & Motor
NOTE
Blower motor bearings are factory sealed
and do not require additional grease.
1. Ensure the unit will not start automatically by
disabling any two way communication and plac-
ing the STOP/RUN-OFF switch in the OFF posi-
tion. Disconnect the high voltage source and
lockout/tagout the receptacle.
2. From inside of trailer, remove back panel and
).
3. Disconnect the motor electrical connector.
4. Remove the supply air sensor and then remove
the nozzle.
5. Loosen the four bolts on the underside of the
support bracket that fasten the two mounting
brackets.
6. Slide the blower assembly off the support
bracket and out of the unit.
7. To remove the fan, loosen the nut holding the
blade to the motor shaft using impact gun.
8. To remove motor remove four bolts that hold
motor to the stator.
9. Complete the assembly in reverse order of
removal. Coat motor shaft with never-seize
before assembly.
Torque:
Fan Nut
37 to 43 ft/lbs
(50 to 58 Nm)
Motor Mounting
Bolts
5.5 to 7.5 ft/lbs
(7.5 to 10 Nm)
Mounting Bracket
Bolts
5 to 7 ft/lbs
(6.8 to 9.5 Nm)
Summary of Contents for Vector 8500
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