52
Part No. 6-847703-00 Rev. C00
Service Procedures
11. Route switch wires and attach them to
appropriate control board terminals. Secure
wires with cable ties.
12. After switch has been adjusted, loosen front
panel hinge screws and return front panel to
upright position. Reinstall two front panel
screws and tighten hinge screws.
13. Close vent valve.
14. Slowly open all liquid containers and high
pressure cylinders on manifold and reserve
header assembly.
15. Reconnect power supply connector to bottom
of manifold cabinet.
16. Check switch threads for leaks using an
oxygen compatible leak detector solution.
17. Open 3/4” source valve above manifold.
NOTE:
Replacement switches are not factory set. Set
switch to appropriate value per Reserve In Use
Switch Adjustment procedure in this manual.
Reserve Header Regulator Replacement
Following procedure describes process of
replacing high-pressure reserve header regulator.
If necessary, reserve header regulator
replacement can be performed while manifold is in
service. However, this should only be done by
qualified technicians experienced in servicing
medical equipment. Internal repair of reserve
header regulator is not recommended. Refer to
Figure 21 for component identification.
1. Close all high-pressure cylinders connected to
reserve header.
2. Disconnect reserve low switch wires from
electrical junction box. Disconnect any
conduit connected to switch.
3. Vent pressure from reserve header by
loosening zero clearance o-ring sealed union
on output side of reserve header regulator.
4. After all pressure has been vented, remove
reserve low pressure switch from elbow fitting
on regulator body.
5. Remove regulator by disconnecting zero-
clearance union on output side and header
union on inlet side of regulator.
6. Remove pressure gauges and remaining
fittings from old regulator.
7. Using Teflon tape, reinstall pressure gauges
and fittings into new regulator body.
8. Reinstall regulator on reserve header and
tighten zero clearance and header unions.
9. Using Teflon tape, reinstall reserve low
pressure switch. Tighten switch so that switch
adjustment opening (Figure 26) is facing
outward.
10. Reconnect reserve low switch electrical
conduit and wiring.
11. Slowly open high-pressure cylinders
connected to reserve header.
12. Adjust regulator per reserve header regulator
adjustment procedure in this manual.
13. Check all joints for leaks using an oxygen
compatible leak detector solution.
NOTE:
• Replacement reserve header regulator is
supplied with inlet nut and tailpiece. All other
fittings and pressure gauges must be
removed from old regulator and reused.
• Refer to Techniques For Leak-Tight Fittings
for recommendations concerning removal and
reassembly of fittings.
• Some pressure ports in new regulator body
will be shipped with pipe plugs. Remove
plugs where applicable.
CAUTION:
Reserve header regulator’s high-pressure ports
incorporate filter material between inner and
outer wire screens. Take care not to dislodge
filter or screens when removing plugs and
reinstalling gauges or fittings.
