Section 23-Leak Test; Leak Test - Invacare Platinum 5 Service Manual

SECTION 23—LEAK TEST
To prevent electrical shock, ALWAYS disconnect concentrator from electrical
outlet before servicing.

Leak Test

NOTE: For this procedure, refer to FIGURE 23.1.
1. Unplug unit.
2. Remove cabinet. Refer to Removing Cabinet on page 25.
3. Plug in unit.
4. Turn the concentrator on ( ).
5. Let concentrator run for 20 minutes.
Apply small amount of leak test solution to fittings only. Avoid all other
components. DO NOT leak test 4-way valve body. Carefully leak test for pressure
leaks around sieve bed hoses at 4-way valve. DO NOT allow leak test solution to
enter into 4-way valve and system.
6. With "leak-test" solution or equivalent soapy water, leak test the following:
A. The two (2) sieve bed hoses at the top of 4-way valve and hose to bottom center port
on 4-way valve (Detail "A").
NOTE: Refer to Preventive Maintenance on page 26 for maintenance of heat exchanger and
filters.
B. Hose connections to top and bottom fittings of sieve beds.
C. P.E. valve hose connections on top of sieve beds (Detail "B").
D. Hose fittings at product tank cap and check valves (Detail "B").
E. The front and rear fittings on heat exchanger (Detail "C").
7. Replace any tubing that appears cracked, worn, etc.
8. Re-install cabinet. Refer to Removing Cabinet on page 25.
9. Refer to Typical Product Parameters on page 9 for concentration levels. If low
concentrations are observed, refer to Troubleshooting on page 17.
Part No 1110538
DANGER
WARNING
89
SECTION 23—LEAK TEST
Platinum™Series