Checking The Indirect Status Indicator (Yellow Led) With The Appliance Open - Weinmann OXYMAT 3 Servicing And Repair Instructions

5.3.12 Checking the indirect status indicator (yellow LED) with the appliance open

Note:
Not necessary as part of a normal functional check or service.
The purpose of this check is to establish whether the status indicator that warns if a leak that is likely to cause
a drop in the oxygen concentration is working properly. This is done by an internal program that creates an
artificial leak which results in the alarm being triggered. If the appliance is open (e.g. for repair work) you
can start this test program with switch
1. Switch on the OXYMAT 3 at the On/Off
switch .
2
An internal leak test will run for about 1 minute.
The green operating indicator
this is in progress.
2. With the appliance running, set a flow of
4 l/min at the top of the ball.
To start the test program, proceed as follows:
3. Switch off the OXYMAT 3 at the On/Off
switch .
2
4. Open coding switch
board.
5. Switch on the OXYMAT 3 at the On/Off
switch .
2
The following LED indicators appear:
– green operating indicator
– red fault indicator
– yellow status indicator
The program then runs an internal leak check
routine:
– pressure is built up within 20 s. The green
operating indicator
– the pressure is checked for about 20 s with
the compressor switched off.
An artificial leak is created in the OXYMAT 3, and
this results in the oxygen concentration falling be-
low 82 %.
6. Check that the yellow status indicator
while this is happening.
If the status indicator does not light up, either:
– you have not set the flow to exactly 4 l/min
or
– the status indicator is faulty.
7. Switch off the OXYMAT 3 at the On/Off
switch .
2
8. Close coding switch
board.
The test program is now deactivated and the
OXYMAT 3 is in normal operating mode.
9. Close the appliance (see "7.4 Closing the
appliance" on page 30).
16
Functional check
on the printed circuit board.
S5
flashes while
20
on the printed circuit
S5
lights up
20
lights up briefly
18
lights up briefly.
19
flashes.
20
is on
19
on the printed circuit
S5
19
O / I O
2
20
Oxygen appliance!
Increased
fire risk!
O/ I
2
18
S5