8-11
62-11039
8.7 EVAPORATOR HEATERS
8.7.1 Description
The evaporator coil heaters are energized through the
power supply or the AC generator driven by the diesel
engine. They are used to defrost or heat the evaporator
coil.
8.7.2 Replacing Heaters
WARNING
When performing service and/or mainte-
nance procedures, make certain the unit
is disconnected from the power source
and that the RS is in OFF position so that
it is impossible for the unit to start up au-
tomatically during the maintenance opera-
tion.
1. Remove the access panel.
2. Determine which heater(s) need replacing by check-
ing resistance on each heater as shown in section
2.13.
3. Remove hold-down clamp securing heaters to coil.
4. Lift the “U” portion of the heater (with the opposite
end down and away from coil). Move heater left (or
right) enough to clear the heater end support.
8.7.3 Compartment One Evaporator Blower and
Motor
The evaporator blowers circulate air throughout the
compartment. The air is drawn through the evaporator
coil where it is either heated or cooled and then
discharged out the nozzles into the compartment.
(Refer to section 2.16.) The blower motor bearings are
factory lubricated and do not require additional grease.
NOTE
The evaporator blower assemblies are different
for each side and will rotate in opposite
directions. There are two blower motor
assemblies.
See Table 8-2 for correct
identification.
Table 8-2 Blower wheels identification
DESCRIPTION
ROTATION
FAN COLOR
Road Side Blower
Counter
Clockwise
Black
Curb Side Blower
Clockwise
Off White
1.
Replacing Blower Assembly (See Figure 8--10)
a. From condenser topside of unit : open electrical
junction box and disconnect wires for motor to be
removed.
b. From condenser topside of unit : unscrew the 4
screws (item 1) and remove. Leave cover plate
(item 2) in place.
c. From inside of trailer, remove access grill, back panel
and fan guard by removing screws.
d.Evaporator blower assembly (wheel and motor) is an
integral part of the blower housing. Unscrew the 4
screws (item 7) and remove both parts (blower as-
sembly and housing) from the pod.
e. Remove blower assembly from housing.
f. Remove spacer (item 5) from old motor and install on
new motor.
g. Install new blower assembly into blower housing.
Install blower assembly and housing back into the
pod.
h. From condenser topside of unit : use a screwdriver
(item 6) through cover plate and spacer to align
spacer.
i. Install bolts (item 1). Start with 2 screws, remove
screwdriver and finish assembly with the last 2
screws.
j. Check that fan does not touch ring of the blower
housing.
k. Complete the assembly in reverse order of removal.
Содержание VECTOR 1800 MT
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