Installation Guide
Installation Instructions
18
 ADAPTING MICROWAVE 
BLOWER FOR OUTSIDE BACK 
EXHAUST (cont.) 
B4.
  Roll the blower unit 90° so that fan blade 
openings are facing out the back of the 
microwave. 
5
  Gently remove the wires from the grooves. Reroute 
the wires through grooves on other side of the 
blower unit.
Before Rerouting After Rerouting
Wires Routed Through Right 
Side
Wires Routed Through Left 
Side
Before Rolling After Rolling
Back of 
Microwave 
Oven
Back of 
Microwave 
Oven
6
  Locate the two “knockout” plates, on the rear 
oven panel, near the top of the oven. Using tin 
snips, carefully cut the web area from the two 
holes side-by-side (that secure the knockouts 
to the oven). Cut all four webs on both rear 
knockouts; this will allow the ventilation fan 
airflow to exhaust out the rear of the oven.
CAUTION
 Be sure to trim the sharp edges 
from the openings after removing the knockout 
plates.
7
9
  Close the blower door. Slide blower shield onto the 
top of the blower door opening. Secure the blower 
to the microwave oven using the blower retaining 
screws from Step 1 except the upper blower motor 
retaining screw
Back of 
Microwave 
Oven
Blower Retaining 
Screw
Blower Retaining 
Screw
Blower Shield
AFTER: Fan Blade
 Openings Facing Back
8
  Place the blower unit back into the opening. 
The blower unit exhaust openings should match 
exhaust openings on rear of microwave.
CAUTION
 Do not pull or stretch the 
blower unit wiring. Make sure the wires are not 
pinched.
End A
End B
  Slide the exhaust adaptor onto the back 
of the microwave oven, securing it into the 
lower locking tabs. Take care to ensure that the 
damper hinge is installed so that it is at the top 
and that the damper swings freely. Reinstall the 
upper blower motor screw through the adaptor 
and the blower door and into the back of the 
microwave oven.
10
Guide
Guide
Adaptor
Locking Tabs 
(not shown)
Back of 
Microwave Oven
Blower Motor 
Door Retaining 
Screw










