Schwing SP 305, Operation Manual

Page: 56 / 104

Maintenance
56 8/4/11
Operation Manual - SP 305
15. Add or release nitrogen until the pressure is
correct. Be sure that the bleed valve is closed
before adding pressure and that the nitrogen bottle
supply valve is closed before releasing pressure.
16. When the correct pressure is reached, proceed as
follows:
•
Close the nitrogen bottle supply valve.
• Unscrew the
T
-handle on the charge kit
( counterclockwise ) until resistance is felt. This
will close the accumulator gas valve.
• Open the bleed valve, which releases the
pressure in the hose, charge valve assembly,
and regulator.
• While holding the gas valve on the
accumulator, unscrew the charge kit swivel
nut.
• Remove the charge kit.
• If you are finished with the charge kit, remove
the hose and regulator.
17. Make a bubbly mixture from soap and water.
Spread the mixture around the accumulator gas
valve to check for gas leaks. Gas leaks will push
the bubbles away from the area of the leak. If you
find a leak, replace the accumulator or have it
repaired by qualified personnel. Never repair an
accumulator yourself.
18. Replace the gas valve seal cap (tighten to 22 ft./
lb.), and hand-tighten the valve protection cap.
19. Repeat the procedure for any other accumulators.
Figure 44
When the supply
valve is open, bottle
pressure shows on
the high pressure
gauge
MUST read at least 1500 PSI
Nitrogen Bottle
Crack open
supply valve
mavCracksupply.eps
WARNING
EXPLOSION CAUSED BY
IMPROPER ACCUMULATOR
CHARGING CAN RESULT IN
DEATH OR SERIOUS INJURY!
* Follow the charging instructions exactly!
* Use ONLY dry nitrogen to charge the
accumulator!
* NEVER use oxygen or compressed air to
charge the accumulator!
explosion warning.eps
Home TOC
Home TOC Print Print