Use and Care Manual

10 - ENG
200-2905
MAINTENANCE
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
and washers 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.
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.
1. Remove the front of the belt guard by removing the screws
and washers 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.
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.
1. Shut OFF the main power
disconnect. Relieve all
the air pressure from the 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.
9. Replace the transfer tube and tighten compression nuts.
Fig. 9
Motor
mounting
bolts (4)
Motor
Sheave
Hub
Screws &
washers (2)
Screws &
washers
Compressor
may vary from
one shown
TO REPLACE OR CLEAN CHECK VALVE
WARNING:
A
D
A
B
F
E
C
G
DRIVE BELT REPLACEMENT
WARNING: