Powerex Medical Packing System MPQ - Manual (Page 15)

Pump No. of Piston Mark on
Compressor No. Rings per Top of
Model Bore Cylinders Piston Piston
OPS010 65 mm 1 1
Flywheel side
Fan side
OPS030 65 mm 1 1
Flywheel side
Fan side
OPT050
LP 105 mm 1 1
Flywheel side
HP 75 mm 1 2
Fan side
OPT100
LP 90 mm 2 1
Flywheel side
HP 75 mm 1 2
Fan side
OPT150
LP105 2 1
Flywheel side
HP75 1 2
Fan side
8
Oilless Reciprocating Air Compressor Pumps
NOTE: The orientation in which the pistons are reinstalled is very impor-
tant. Improper placement will cause premature wear of the ring and pis-
ton.
NOTE: When removing HP piston on two-stage pumps, remove piston and
then insert retention sleeve having the same diameter of piston pin or pis-
ton to small end of connecting rod. If not, you may drop or lose needles
from the bearing, as HP needle bearing does not have support.
Fit piston by referring to ∆ marking on the top of the
piston surface and list on above chart.
NOTE: Gradually insert piston pin while turning it. Inserting with force can
damage oil seal of needle bearing.
* FOR LOW PRESSURE PISTON ONLY
! CAUTION
PISTON ORIENTATION CHART FOR OILLESS OPS/OPT SERIES
Small end of
connecting rod
Piston Pin
Jig (fixture) or
collar
Figure 15
Powerex Oilless
Reciprocating
Grease
6 Grams
#IP634500AV
P U R E A I R T E C H N O L O G Y Oilless Reciprocating
Grease
6 Grams #IP634500A
V