Brushless Evaporator Motor; Removal - PREVOST H3-41 Maintenance Manual

SECTION 22: HEATING AND AIR CONDITIONING
• Reinstall following
recommendations (Paragraph 7.6)
FIGURE 37: COMPRESSOR MOUNTING H-SERIES
FIGURE 38: COMPRESSOR MOUNTING X-SERIES
4.3

BRUSHLESS EVAPORATOR MOTOR

The brushless evaporator motor is installed in
the evaporator compartment (Figure 39). It is a
27.5 volt, 2HP (1,5 kW) motor which activates a
double blower fan unit.
FIGURE 39: H3 SERIES EVAPORATOR COMPARTMENT
30 PA1621 Maintenance Manual All Series | Revised February 2019
system clean-out
FIGURE 40: X3 SERIES EVAPORATOR COMPARTMENT
4.3.1

Removal

• Set the battery master switch to the OFF
position and trip circuit breaker CB3 (CB6 on
X3 VIP).
• Open the evaporator compartment door.
• On the HVAC module. Disconnect circuit
90H1 from evaporator relay R12.
• Identify the discharge
compartment and remove the Phillips head
screws fixing the air duct to blower fan unit.
• Remove the motor access panel.
• Disconnect electrical motor speed control
wire (white wire, circuit 2F), power cable and
ground cable from motor terminals.
• From under the vehicle, remove the eight
bolts fixing the double blower fan unit base.
Remove the complete
evaporator compartment (Figure 41).
CAUTION
Never support evaporator motor assembly by
its output shafts while moving it. Always use
double blower fan unit base.
ducts inside
unit from the