OPERATION INSTRUCTIONS:
H
IGH
P
RESSURE
C
HARGING
H
OSE
F
OR
XPX M
ODEL
D
AMPENERS
BLACOH F
LUID
C
ONTROL
, I
NC
.
1
HIGH PRESSURE CHARGING HOSE LIMITED TO 15,000 PSI (1,034 BAR) MAXIMUM CHARGE
PRESSURE.
Only charging systems with components designed to be used at or above the maximum allowable
working pressure (MAWP) specified on dampener can be used for charging. The source of
Nitrogen (tank or bottle) must be equipped with a regulator set at no more than the MAWP
specified on dampener.
I M P O R T A N T ! HIGH PRESSURE IS DANGEROUS. ONLY QUALIFIED PERSONS ARE ALLOWED
TO CHARGE, INSTALL AND REPAIR HIGH PRESSURE MODELS.
Use clean dry Nitrogen only to charge dampener.
DO NOT USE OXYGEN.
DO NOT
exceed maximum allowable working pressure (MAWP) specified on dampener.
Always wear safety glasses and other appropriate safety equipment when installing, charging or
repairing dampener.
READ ALL SAFETY WARNINGS AND INSTALLATION & OPERATION INSTRUCTIONS IN THE
DAMPENER MANUAL BEFORE CHARGING.
1. Install 1/4" NPT fitting end of charging hose to a high pressure regulator at compressed Nitrogen source.
Make sure valve at nitrogen source is closed to flow and regulator is set to zero.
2. Connect dampener hose charging connection to dampener charging valve. Tighten by hand and seal with
light wrench pressure.
3. Open charging valve opening nut by turning
counter clockwise
.
4. Make sure charging hose bleed valve is closed by turning
clockwise
until tight.
5. Slowly open valve at Nitrogen source and charge dampener to 100 psi (6.9 bar). Close Nitrogen valve and
inspect dampener charging valve and dampener end cap threads cap for leaks by spraying with a solution
of soap and water.
6. Slowly increase Nitrogen pressure in dampener until desired pressure (generally 80% of system pressure)
is stabilized on charging hose gauge.
7. Close Nitrogen valve and observe manifold pressure gauge for one minute. It is normal for the pressure in
the dampener to drop slightly. If pressure drop is more than 5%, repeat steps 3 through 5 above.
8. After desired pre-charge pressure is reached, close Nitrogen valve and reset pressure regulator to zero.
9. Tightly close charging valve opening nut by turning
clockwise
.
10. Slowly open charging hose bleed valve by turning
counter clockwise
.
11. Remove charging hose connection from dampener charging valve.
12. Tightly replace cap on dampener charging valve to prevent slow loss of pressure through charging valve.
