Invacare 6LXO2 Service Manual page 68

PROCEDURE 21
PROCEDURE 21 - SIEVE BED PRESSURE TAP-IN KIT INSTALLATION AND BED
S
PRESSURE CHECK (FIGURES 1, 2 & 3)
I
E
V
NOTE: Adjust the concentrator to MAXIMUM
liter flow (3 liters for 3LX, 5 liters for 5LX/5LXO2
E
and 6 liters for 6LXO2).
B
NOTE: Wait approximately 5 minutes to allow
E
D system pressures to achieve proper equallibrium
before testing.
P
R
4. The pressure in the concentrator should rise
E
within 20 seconds to 20 PSIG + .3 (BEFORE
S
97I) and 21 PSIG + .3 (AFTER 97I) and shift
S
the 4-way valve to the opposite sieve bed.
U
R 5. After the 4-way valve shift, the pressure in the
E
concentrator will drop to 14 PSIG + 2 before ris-
ing within 20 seconds to 20 PSIG + .3 (BEFORE
97I) and 21 PSIG + .3 (AFTER 97I) and shift
the 4-way valve to the opposite sieve bed.
6. If pressure reading is 20 PSIG + .3 (BEFORE
97I) and 21 PSIG + .3 (AFTER 97I) when both
valve shifts are made, proceed to STEP 9.
7. If pressure in the concentrator does not fall into
the specifications listed above, refer to the
TROUBLESHOOTING section in this manual.
8. Turn the concentrator OFF.
9. Unclamp the pressure gauge and remove it from
the "T" fitting.
Restrictor
SHOWN for
Clarity
Adjustable Clamp
FIGURE 3 - PRESSURE TESTING
AFTER TESTING (FIGURE 4)
1. Insert 1/4-inch plug and 1/4 x 2-inch silicone
2. Reinstall the cabinet onto the base of the con-
1/4-inch
Clamp
STEP 1.
Pressure
Gauge
Product Tank
68
SIEVE BED PRESSURE CHECK
tubing onto the "T" fitting and secure with 1/4-
inch clamp.
centrator.
Restrictor
SHOWN
for Clarity
FIGURE 4 - AFTER TESTING
1/4-inch
Plug
1/4-inch
Clamp