NPK GH7 - Discharging the Gas Pressure

NPK
- 62 -
GAS CHARGE
DISCHARGING THE GAS PRESSURE
PROCEDURE
1. Remove the charge
valve cap (M1) from the
charge valve (M). Do
not remove the charge
valve assembly!
2. Turn the NPK charge
adapter T-handle (g2) to
a full counterclockwise
position.
3. Install the NPK charge
adapter (g1) onto the
hammer charge valve
located on the hammer
gas head (L).
REMOVETHEVALVECAPONLY,NOTTHECHARGEVALVEASSEMBLY!
4. Tighten the charge
adapter cap (g6).
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
overtighten!
6. Loosen the charge adapter
cap (g6) VERY SLOWLY!
The gas pressure will
gradually decrease to zero.
When it gets to zero, remove
the cap.
7. Remove the charge adapter (g1) from the gas charge valve on the hammer gas head
(L), then, reinstall the charge valve cap.