HELiOS Portables Technical Service Manual • PN 20562190 Rev E
20
HELiOS P
or
tables
Maintenance
X
There are two schedules for routine maintenance which the home
health care distributor may follow. These schedules allow the
distributor maximum flexibility while assuring that the equip-
ment is operating properly. CAIRE suggests a continuous (as
needed) and biennial (24-month) schedule for routine mainte-
nance of the H300 and H850. The distributor may follow either
schedule, or a combination of the two schedules. Maintenance
checklists are provided for each schedule. See Below.
Schedule A – Biennial (24-Month) Schedule
A. Introduction
The Biennial schedule is a series of tests that should be per-
formed at a minimum of once every 2 years to ensure that the
equipment is functioning properly.
1. If the unit fails a given test, one of two things may be done:
Refer to the Troubleshooting section of this manual
-or-
Return the unit to CAIRE, Inc. for repair
2. Schedule – Maximum of two years between routine main-
tenance testing. The unit should be tested whenever a
problem is suspected.
A. Procedure
Follow the steps in order listed. If the unit fails any step, refer to
Troubleshooting section of this manual.
1. Visual Inspection:
a. Remove any LOX prior to maintenance (RP3).
b. Inspect the case, flow knob, and vent lever for cracks,
warping, or discoloration.
c. Verify that the label on the rear cover is present and
legible.
d. Verify that the fill connector poppet is not worn or bro-
ken.
e. Verify that the lip seal in the fill connector is not
cracked.
f. Move the vent lever down to the open position. Verify
that it moves smoothly when opening and closing the
vent valve.
3. Clean and Disinfect the Exterior Case
4. Gaseous Oxygen Functional Tests
a. Primary Relief Valve Test (RP7)
b. Secondary Relief Valve Test (RP8)
c. Liquid Leak Detector Test (RP2)
5. Fill the unit full of liquid oxygen.
a. Verify that the spring scale reads full.
b. Inspect the outer container for cold sweaty conditions
and excessive venting from the relief valve.
c. NER Test (RP22)
d. Economizer Test (RP9)
e. Demand Flow Control Valve Test (RP19)
6. Prepare For Use
a. Empty the liquid oxygen from the unit.
b. Verify that the contents indicator scale reads empty.
NOTE: All test procedures are numerically designated “RP#”
and can be found in the Troubleshooting section of this manual.
