Blower Orientation; Replacement Parts List; Cleaning; Motor Speed Troubleshooting - Broan NuTone PM44 Installation Manual

BLOWER ORiENTATiON
IMPORTANT: Be sure the blower is correctly orientated. Note ar-
row on the side of the blower housing indicating the correct air flow
direction (FIGURE 5).
FmGURE 5 = VERTICAL DISCHARGE
VERTICAL
DISCHARGE
VENT
(TOP OF HOOD)
REPLACEMENT PARTS LIST
Part No. Description
R561107 3-Pos. Rotary Light Switch
R567073 Motor, Speed Control
R730079 Blower Assembly
R610038 FiIter
R566066 Lampholder
R520098 Motor
R531041 Blower Wheel CW
R531042 Blower Wheel CCW
MOTOR LIGHT SWITCH
CONTROL
BLOWER
fr DISCHARGE=
LOCATEAT
DISCHARGE
VENTIN TOP
OFROOD
THinS
JUNCTION
BOX
CLEANING INFORMATION
F_LTER
For greatest efficiency, the aIuminum filters shouId be removed and
cleaned periodicaIIy.
To clean, the filter should be soaked in hot water and detergent
then thoroughly rinsed. The aluminum filter can be cleaned in a
dishwasher.
EXTERIOR SURFACE
To preserve its Iasting beauty, clean with a mild detergent. DO NOT
use abrasive cleaners.
MOTOR SPEED
TROUBLESHOOTING
If you have a motor speed problem, please check the following list
for possible troubles.
1. Knockouts not removed from hood.
2. BIower assembly instalIed wrong - intended for vertical dis-
charge but instaIled for horizontaI discharge and vice versa
(FIGURE 5).
3. Damper blade not opening.
4. Duct undersized - reduced airflow because duct too smaII or
too long.
5. Restriction in duct from foreign materials or debris.
6. Undersized or restrictive wall or roof cap.
7. Damper blade in wall or roof cap not opening.
8. Wait for 20 - 30 seconds between speed changes for RPM to
adjust.
By removing or correcting these adverse factors, the motor speed
control will be able to decrease from maximum RPM.
FILTER
I
l