Procedure 19 - Leak Test - Invacare 6LXO2 Service Manual

PROCEDURE 19

PROCEDURE 19 - LEAK TEST

(FIGURES 1-3)
L
E
TO PREVENT ELECTRICAL SHOCK, ALWAYS
A
DISCONNECT
K
ELECTRICAL OUTLET BEFORE SERVICING.
T
Leak Test
E
1. Unplug unit.
S
T
2. Remove cabinet. (Refer to PROCEDURE 1 -
REMOVING CABINET).
3. Turn the concentrator on.
4. Let concentrator run for 20 minutes.
Apply small amount of leak test solution to fit-
tings 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.
5. With "leak-test" 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 (FIGURE 1).
NOTE: Refer to PROCEDURE 2 - PREVENTIVE
MAINTENANCE 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 - IRC 5LX/IRC5LXO2 (FIGURE 2).
d) Hose fittings at product tank cap and check
valves (FIGURE 2).
e) The front and rear fittings on heat exchanger
(FIGURE 3).
6. Replace any tubing that appears cracked, worn,
etc.
7. Re-install cabinet. (Refer to PROCEDURE 1 -
REMOVING CABINET).
8. See SPECIFICATION section of this manual
for Concentration Levels. If low concentrations
are observed, refer to the TROUBLESHOOT-
ING GUIDE in this manual.
CAUTION
CONCENTRATOR
CAUTION
Sieve Bed Hoses
to 4-way Valve
(STEP 5-a).
FROM
FIGURE 1 - 4-WAY VALVE HOSES
P.E. Valve Fittings
[5LX/5LXO2/6LXO2
ONLY.] (STEP 5-c.)
FIGURE 2 - SIEVE BED AND PRODUCT TANK
Heat Exchanger (Typical)
Hose Connections
(STEP 5-d).
NOTE: NEW heat exchanger does NOT have fins.
FIGURE 3 - HEAT EXCHANGER HOSES
62
LEAK TEST
Hose Fitting on
Bottom Center Port
of 4-way Valve
(STEP5-a).
Hose Connections to
Top Fittings of Sieve
Beds (STEP 5-b).
Check Valve
All Hoses to
(STEP 5-d).
Product Tank Cap
(STEP 5-d).
Hose Connections to
Bottom Fittings of Sieve
Beds (STEP 5-b).
HOSES
Tubing