User's Manual

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LPR (LOW PRESSURE REGULATOR)
ADJUSTMENTS AND MAINTENANCE
CHANGING THE SEAL RETAINER
1 Take frame off the marker.
2 Screw out LPR seal assembly
(brass) using a
3
⁄16” Allen
wrench.
3 Screw in new LPR seal assembly.
4 Replace frame.
If the user needs to replace the
whole LPR assembly, follow these
instructions:
1 Take frame off the marker.
2 Screw out LPR set screw using
a
5
⁄64” Allen wrench.
3 Pull out the LPR.
4 Put everything back in reverse
order. Be sure to grease the #013
O-rings, so as to prevent
cutting them upon installation.
5 Tighten LPR retaing screw
securely.
LPR (LOW PRESSURE REGULATOR)
ADJUSTMENTS AND MAINTENANCE
The LPR pressure can be set
quite accurately even without an
LPR test tool. Screwing the
adjustment screw (seal retainer)
all the way in will set the LPR
pressure to approximately 25
psi. Now turning out the
adjusting screw 180 degrees will
increase the pressure by
approximately 5 psi. For
example, turning the screw 5
complete turns out will set the
pressure to approximately 75
psi. Use a
3
⁄16” Allen wrench to
make all adjustments to the LPR.
Turning the adjustment screw
clockwise, or in, will lower the
LPR’s output pressure. Turning
the adjustment screw
counterclockwise, or out, will
raise the LPR’s output pressure.
PM8 manual-FINAL.qx6 10/4/07 1:07 PM Page 25