Powermate PLA4708065 Operator's Manual page 10

NOTE: Once the motor pulley has been moved from its factory
set location, the grooves of the flywheel and pulley must
be aligned to within 1/16" to prevent excessive belt wear.
To check pulley alignment, remove the belt guard and place
a straightedge (see A) against the pump flywheel (see B) (See
Fig. 9). Measure and record the distance from the straightedge to
the edge of the drive belt at point C. Then measure the distance
from the straightedge to the edge of the drive belt again at points
D and E. Both distances should be the same as at point C. If D
or E are different from C, there is a misalignment which must
be corrected before the compressor is run. To correct a pulley
misalignment, use the following procedure.
1. Remove the front of the belt guard by removing the screws
using a Torx T25 bit.
2. Loosen the motor mounting bolts.
3. Remove the 2 screws and lock washers from the hub using a
7/16" wrench.
4. Insert the screws into the threaded holes on the hub and
tighten to pull hub away from sheave, remove screws.
5. Align the motor pulley with the pump flywheel (C-D-E must
be equal ).
6. Replace hub by aligning non-threaded holes in hub to holes
in sheave. Insert screws and lock washers and tighten.
7. Adjust the proper belt tension.
8. Retighten the motor mounting bolts to 130-180 in.-lbs.
9. Reinstall the belt guard. All moving parts must be guarded.
DRIVE BELT REPLACEMENT
WARNING:
This unit starts automatically.
ALWAYS shut off the main power disconnect, and
bleed all pressure from the system before servicing
the compressor, and when the compressor is not in
use. Do not use the unit with the shrouds or belt
guard removed. Serious injury could occur from
contact with moving parts.
MAINTENANCE
1. Remove the front of the belt guard by removing the screws
using a Torx T25 bit.
2. Loosen the motor mounting bolts.
3. Shift the motor towards the pump to the point where the belts
can be easily removed and installed.
4. Remove and replace belts. NOTE: The belts must be
centered over the grooves on the flywheel and motor pulley.
5. Shift the motor back to the point where the correct deflection
exists (see "Drive Belt Tension Adjustment").
6. Retighten the motor mounting bolts to 130-180 in.-lbs.
7. Check to ensure that the tension remained correct.
8. Reinstall the belt guard. All moving parts must be guarded.
TO REPLACE OR CLEAN CHECK VALVE
WARNING:
ALWAYS shut off the main power disconnect, and
bleed all pressure from the system before servicing
the compressor, and when the compressor is not in
use. Do not use the unit with the shrouds or belt
guard removed. Serious injury could occur from
contact with moving parts.
1. Shut OFF the main
power disconnect.
Relieve all the air
pressure from the
Fig. 9
tank (refer to
"Shutdown" in
Operating
Instructions). Make
sure the compressor
has cooled down
before servicing.
2. Using the appropriately
sized wrench, loosen
the compression nuts
(A) on the check valve
(B) and pump head
(C). Remove the
transfer tube (D).
3. Using the appropriately sized wrench,
loosen the compression nut (F) from the
connector (G), located on the side of the
check valve. Remove the bleeder tube
(E).
4. Making note of the orientation for
reassembly, unscrew the check valve
from the tank (counterclockwise) using
the appropriately sized wrench.
5. Using a pencil or screwdriver, carefully
push the valve disc up and down. If the
valve disc does not move freely up and
down, the check valve needs to be
cleaned or replaced.
6. Clean the check valve with warm soapy water and make sure
to dry thoroughly before reinstalling. If the disc valve still
does not move freely up and down, it will need to be
replaced.
7. Apply thread sealant to the check valve threads and reinstall
into the tank by turning clockwise. Make sure it is the
same orientation as when it was removed.
8. Replace the bleeder tube and tighten compression nut.
10 - ENG
This unit starts automatically.
To pump head
A
D
A
B
To tank
C
E
F
G
200-2824