Graco ProComp HVLP 3800 Instructions Manual page 15

Motor Brush Replacement
Note: It is recommended that this procedure be per-
formed by an authorized service center technician.
1 Follow Turbine Sprayer Disassembly procedure,
page 13.
2 Follow Turbine/Motor Replacement, page 15.
3 Remove plastic fan cover.
4 Remove brushes. Check commutator for excessive
wear.
Note: Do not install new brushes in a turbine in which
the commutator has been damaged by the brush hold-
ers. A motor with this type of damage cannot be
repaired.
5 Install new motor brushes using reverse order. Keep
lead wires away from all rotating parts and motor
frame.
CAUTION
Do not run motor with air inlet or outlet sealed off.
6 Reassemble turbine.
7 Run motor 30 to 45 minutes at half-rated voltage to
seat motor brushes.
Note: If half-rated voltage is not available, run repaired
unit in series with another turbine for 30 to 45 minutes.
309907P
Turbine/Motor Replacement
Refer to Parts Drawing, page 16.
1 Follow Turbine Sprayer Disassembly procedure,
page 13.
2 Remove turbine gasket (25).
3 Remove 3 screws (6).
4 Remove plate (82) and 3 spacers (83).
5 Remove turbine motor wires from spade
connectors.
6 Rotate turbine (24) from outlet fitting (18) and lift up
from turbine spacers (23).
7 Install new turbine gaskets (25 and 41).
8 Reassemble turbine.
9 Connect ground wire to turbine housing.
10 Reconnect wires.
F . 9
IG
Repair
15