Repair
333233D
13
Replace Fan Fuses
1.
Perform
Pressure Relief Procedure
, page 7.
2.
Disconnect unit from power source.
3.
Remove two screws (53) and remove junction box
cover (G) from driver to gain access to the discon-
nect block (J). Gently pull out fuse holders.
4.
Unscrew fuse holder, remove old fuse, and replace
with new fuse (Graco part number 116682) (5 mm x
20 mm, 500 mA, 250V, Slow Blow). Reconnect fuse
holder and tighten.
5.
Repeat step 4 with second fuse.
6. Tuck wires back into junction box (S) around discon-
nect block (J) and reinstall junction box with two
screws and washers.
NOTE:
Make sure no wires get pinched during
installation.
Replace Fan Assembly
1.
Perform
Pressure Relief Procedure
, page 7.
2.
Disconnect unit from power source.
3.
Remove two screws (53) and remove junction box
cover (G) from driver to gain access to the discon-
nect block (J). See F
. 9.
4.
Loosen screws for 1L1 and 5L3 and gently remove
wires from each location.
NOTE:
For Series A and Series B motors, use ter-
minals 1L1 and 3L2.
5.
Use a wire cutter to cut ferrule tips from fan wires
and motor power wires close to ferrules.
NOTE:
Do not cut the tip off of the ground wire.
See F
F
IG
. 9: Fuse Location
WLD
53
G
J
F
IG
. 10: Remove Wires
WLD
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