Service Manual
Integra E-Z Oxygen Concentrators
Chart SeQual Technologies Inc. Page 25 of 34 P/N 2917
6.3.1.5 Remove Qty 6 small Phillips style screws securing the PCBA to the front panel (save for
reinstallation).
6.3.1.6 Carefully lift off the Circuit Board (do not slide off due to buzzer and LCD components
mounted on the underside of the board) and place into appropriate ESD packaging.
NOTE:
Place the removed board in the Anti-
static bag of the replacement board that
was received.
6.3.1.7 Installation is the reverse of the removal with the addition of a leak test (see section 6.11.2).
Install Zip Ties where the tubing was removed from the fitting barbs.
CAUTION:
Do not over-tighten screws.
6.3.2 Leak Test
CAUTION:
After PCBA installation, a test is required to verify that no leaks
were caused during rework! Leaks in the system can cause
premature concentrator failure.
6.3.2.1 Required Materials:
A “T” fitting, tubing, pressurized gas source and a gauge will be needed. A pressure gauge
Marsh, model J9040, or equivalent with minimum characteristics of 15 psi range, 0.5 psi scale
subdivisions, and 4” dial can be used. Bottled air, nitrogen, or oxygen from the outlet of
another concentrator can be used to supply the test pressure.
secured on one end
with Cable Tie
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