Discharging The Gas Pressure - NPK PH1 Operator's Manual

GAS CHARGE

DISCHARGING THE GAS PRESSURE

PROCEDURE
1. Remove the charge valve
cap (M1) from the charge
valve (M). Do
remove the
valve assembly!
REMOVE THE VALVE CAP ONLY, NOT THE CHARGE VALVE
ASSEMBLY!
4. Tighten the charge
adapter cap (g6).
7. Remove the charge adapter (g1) from the gas charge valve on the hammer gas head
(L), and then reinstall the charge valve cap.
THE NITROGEN GAS MUST BE DISCHARGED FROM THE
HAMMER BEFORE DISASSEMBLY!
2. Turn the NPK charge
adapter T-handle (g2)
to a full
not
counterclockwise
charge
position.
5. Turn the T-handle (g2)
clockwise. As the T-
handle is screwed in, a
resistance is
encountered. By turning
the T-handle, the
nitrogen gas pressure
will be indicated on the
pressure gauge (g8).
Stop turning the T-
handle when the gauge
reads pressure. Do not
over tighten!
3. Install
adapter
hammer
located on the hammer gas
head (L).
6. Loosen
- 64 -
the NPK charge
(g1) onto
charge
the charge
adapter cap (g6) VERY
SLOWLY! The
pressure will gradually
decrease to zero. When it
gets to zero, remove the
cap.
the
valve
gas