Trouble Shooting - M&C PSS Series Instruction Manual

16

TROUBLE SHOOTING

The following table aims to point out possible operational problems and offer solutions to such problems (not
applicable during the starting procedure).
Indication Problem
Interruption of
gas flow;
Upper LED on
cooler does not
come on;
Middle LED on
Cooler in
cooler is green;
operation but
gas flow
interrupted;
Alarm LED on the
LA electro-nics is
red
20
Possible Cause
No voltage;
Cooler does not function.
Cooler alarm registers
'excess temperature'.
Cooler turns gas
measuring pump of
automatically.
Membrane pump faulty;
Contamination of the
membrane pump;
Sample probe/hose
clogged up or lead
squashed;
Sample gas hose to
analyser clogged up or
squashed;
Optional liquid alarm
sensor:
Sensor turns measuring
pump off automatically;
Optional flow meter:
Needle valve closed.
PSS-10 | 1.00.02
Check/Solution
Check supply voltage with model type plate;
OK?
Check whether the supply voltage plug is insert correctly
and if the main switch is turned in position 'I'
OK?
Check the fine fuse in the power socket;
OK?
Ambient temperature too high.
OK?
Free convection in case impaired  case temperature too
high;
OK?
Cooler faulty (for check see manual ECP20-1,
3-1.10ME).
OK?
Check voltage on clamps X1/11 and X1/8 ;
OK?
Remove the hoses at head of pump and check;
OK?
Clean pump if necessary;
OK?
Remove sample hose at gas inlet;
Gas flow?
Clean contaminated lead or replace;
No gas flow?
Remove sample gas hose on analyser side and check via
hose thread if sample gas flows;
No gas flow?
Clean contaminated leads or replace;
Gas flows?
Momentary overloading of the cooler due to excessive
amount of condensate;
OK?
Check hoses for condensate removal;
OK?
Check Pre-filter and if necessary replace;
OK?
Check hoses of the peristaltic pump (see manual SR25.1,
3-7.1-ME);
OK?
Check peristaltic pump SR25.1 (see manual SR25.1, 3-7.1-
ME);
OK?
Check cooler according to instruction manual;
Adjust needle valve(s) to the desired flow.
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