CAUTION: Make sure o-ring
is not twisted when seated in
groove.
STEP 7.
Place the new head
gasket into the groove inside
the head, seating it firmly in the
groove with your finger or blunt
object.
STEP 8.
Place the head on the
top of the valve plate in the same
orientation as it was when re-
moved. Install the 6 head screws
and tighten in a criss-cross pat-
tern to 45 in-lbs.
NOTE: Some of these models
are equipped with a carrying
handle. The handle, if present,
should extend over the motor to
provide proper balance when the
unit is carried.
STEP 9.
Slide the fan onto the
shaft in the same orientation that
it was before it was removed.
STEP 6.
With the sleeve located and firmly seated on the housing, re
-
place the valve plate as shown in Fig. #8. Make sure the top edge of the
sleeve locates in the O-ring groove in the bottom of the valve plate.
Figure 8
5
Caution
To avoid property damage or personal injury, always try rotating
the fan by HAND prior to connecting the unit to the power
source. Check for suction at the air inlet port by placing your
finger over the port as you turn the fan. You should feel a slight
suction with each rotation of the fan. If you don’t feel suction,
or if you feel or hear a thump as you turn the fan, DO NOT
CONNECT THE UNIT TO A POWER SOURCE; review the
assembly procedure for possible error.
