Hale CAFS Attack - Manual (Page 59)

59 CAFS Bottled-Air Operator/s Guide
p/n: 029-0020-85-0
Ro u tine M ain te n an ce
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5. Apply light lubricant (oil) to the O-ring seal and thread and tighten the
case to the housing base.
6.3 RELIEVING HIGH PRESSURE
DANGER !
ONCE THE AIR CYLINDERS ARE FULLY CHARGED AND THE SYSTEM IS
ENERGIZED, ALL HIGH PRESSURE LINES BETWEEN THE CYLINDER SHUT-
OFF VALVES AND THE PRESSER BALANCING REGULATOR VALVES,
INCLUDING THE AIR FILTER, ARE EXPOSED TO HIGH PRESSURES (4,500
PSI / 310 BAR).
DO NOT PERFORM ANY SERVICE TO THE HIGH PRESSURE SIDE UNTIL THE
SYSTEM PRESSURE IS RELIEVED.
1. The HIGH pressure side is bled (pressure relieved) by FIRST making
sure the cylinder shut-off valves are FULLY CLOSED and the system is
shut-down. (See Section 5a.2 “Shutting-down CAFSAttack,” on page
56.)
2. Then slightly loosening
the hose fitting nut a few
turns at the cylinder shut-
off valve until you begin
to hear air escaping from
the fitting. (See Figure 6-
2: “Relieving HIGH Pres-
sure.”)
An alternate method is to
install a shut-off valve in
an accessible area in the
HIGH pressure line.
3. When ALL pressure is
relieved from the system
(air escaping can no
longer be heard, or down
to zero {0} PSI / BAR) it is
then safe to service the
HIGH pressure system.
4. Once pressure is relieved, fully tighten the cylinder hose fitting nut.
Figure 6-2: Relieving HIGH Pressure