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MODEL 345
MAINTENANCE
1. Before cleaning or servicing unit, switch power off at service
panel and lock service panel to prevent power from being
switched on accidentally.
2. The motor in this attic fan is a motor long-life bearings. However,
periodic lubrication will extend the life of the motor. Recommended
lubricant is a good grade SAE No. 20 oil. Lubricate top and
bottom bearing 20 drops maximum (10 in each port) after two
years of operation, and every year thereafter. DO NOT
OVERLUBRICATE!
SERVICING FROM ROOF SIDE
1. Remove three screws (
1
) to remove the dome (
2
).
2. Loosen set screw on the fan blade (
3
) and remove the fan
blade sliding the blade in an upward motion. TAKE CARE NOT
TO BEND THE FAN BLADES.
3. Loosen the three 5/6” bolts (
7
) on the motor band brackets (
6
).
4. Slide motor (
4
) upwards through the mounting band. Motor
wires may have to be disconnected in the junction box.
5. Lubricate top and bottom bearings with 10 drops each of a
good grade SAE NO. 20 oil.
6. Reassemble making sure motor is relocated to it’s original
position on the motor mounting bracket. The fan blade must
also be relocated to it’s original position on the motor shaft.
MAINTENANCE
(
CONTINUED
)
SERVICING FROM THE ATTIC SIDE
1. Remove three screws 1/4” bolts (
9
) holding the motor assembly
to the roof plate (
5
).
2. Motor assembly will drop down as the three bolts are removed.
TAKE CARE NOT TO BEND THE FAN BLADES.
3. Lubricate top and bottom bearings with 10 drops each of a
good grade SAE NO. 20 oil.
4. Reassemble the motor assembly to it’s original position on
the roof plate.
SERVICE PARTS
Key No.
Part No.
Description
1
30150016
Dome screw no. 8 - 18 x 1/2” Black
2
30110025 Dome
3
30020070
Fan Blade and Set Screw
4
30080123 Motor
5
10940229 Roof
Plate
Assembly
6
30390371
Motor Mount Band (3 req’d)
7
30180001
Screw 5/16 - 18-3/4 Hex. Head (3 req’d)
8
30260019
Nut Hex. 5/16 - 18 (3 req’d)
9
30160061
Screw 1/4-20 5/8 Type 23
Hex. Washer Base Head (3 req’d)
10
30150002
Screw no. 8 x 3/8 Type B Sheet Metal
(5
req’d)
11
30390105 Wiring
Box
12
30160007
Ground Screw no. 10-32 x 3/8
13
30030009 Adjustable
Thermostat
14
30440029 Wire
Lead
Assembly
15
30390106 Cover
16
30070764
Label Model 345-2
Order service parts by “Part No.” - not by “Key No.”
30040490B
