QR-25 Series
Quincy Compressor
52201-105, May 2003
26
3501 Wismann Lane, Quincy IL - 62305-3116
Reversal of Compressor Rotation
Pressure lubricated QR-25 series compressors can be modified to operate in
reverse rotation with exception to the Models 206 & 210. These two models
operate in the counterclockwise direction only.
To reverse the operating direction of a pressure lubricated compressor,
perform the following steps:
Step 1)
Remove the control tubing from the hydraulic unloader and pilot
valve (if so equipped)...
the oil pressure gauge and hydraulic unloader...
the pilot mounting stud set screw and pilot valve assembly...
the oil filter
*
(turn counterclockwise)...
and six (6) oil pump housing bolts.
Step 2)
Rotate the oil pump housing
1
/
2
turn (180°). (Note: The rotational
arrow at the top of the pump housing should now reference the
direction you wish the compressor to rotate. (See
Fig. 5-4,
Compressor Directional Arrows
)
Step 3)
Re-install the six (6) housing bolts and torque them in a star or
cross pattern to six (6) ft.-lbs.
Step 4)
Remove the countersunk pipe plug
*
from the oil pump housing and
relocate it in the opposite (bottom) hole. (See
Fig. 5-5,
Relocating
Countersunk Pipe Plug
)
Failure to relocate this pipe plug will result in complete loss of oil flow
throughout the compressor. Compressor seizure will result and warranty
will be void. The countersunk pipe plug must always be relocated in the
bottom port position.
Step 5)
Install a new oil filter*. Tighten the filter
1
/
2
turn after initial gasket
contact.
Step 6)
Re-assemble the control components in reverse order.
Step 7)
Double check the directional arrows.
Step 8)
For aircooled models only, remove the standard compressor sheave
and replace with a reverse rotation sheave available from your
local Quincy Compressor Distributor.
Step 9)
Start the compressor and adjust the oil pressure.
Torquing Cylinder to Head Capscrews
Torque cylinder to head capscrews to specifications during assembly. Then,
run the compressor for at least 30 minutes. Shut the unit off and follow
precautions outlined in
SECTION 5,
Stopping for Maintenance.
Retorque
the head capscrews to same specifications while the unit is still hot.
Pix 1068
Fig. 5-4
Compressor Directional
Arrows
OIL RETURN PORT
FROM THE OIL FILTER
COUNTERSUNK
PIPE PLUG
OIL SUPPLY PORTS
TO THE OIL FILTER
Pix 1154
Fig. 5-5
Relocating
Countersunk Pipe Plug
*Not applicable to models without oil pumps.
Содержание QR-25 Series
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