Trouble Shooting - M&C PSS Series Instruction Manual

15

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
The power Device can
light doesn't not start
work
Temperature Display
controller 9999 or
display error 1999
Sample Peltier
pump does cooling unit
not start worked
normally，
but there
was no gas
flow
Small outlet Peltier
flow cooling unit
and pump
are
operating
normally,
but the
outflow rate
is very low
26
Possible Cause
No voltage

Incorrect voltage

Fuse broken

Bad contact of

PT100 sensor
signal wire;
PT100 sensor

signal wiring error;
PT100 sensor is

damaged;
Diaphragm pump

failure;
Diaphragm pump

contamination;
The gas sample

probe/gas line is
blocked or
compressed;
The sample gas

line connected to
the analyzer is
blocked or
compressed;
The sample pump

switch is not
turned on;
Humidity sensor

contact switch to
close the sample
pump;
Filter clogging

Pump failure

PSS-20 | 1.00.01
Check/Solution
Check the power supply voltage against

the model's name plate;
Check if the power plug is inserted

correctly and that the main switch is in
position "1".
Check the fuse in the power socket.

Replace the spare fuse;

Open the top cover to check the

thermostat PT100 sensor wiring.
Check if the wiring is correct.

Replace the PT100 sensor;

Remove the gas lines from the pump head

and check it;
Clean the pump as needed.

Remove the gas tubing from the gas inlet;

Clean or change the gas way;

Take down the gas tubing on the analyzer

side. If the sample gas is flowing, check
the connection of the gas tubing.
Clean or change the gas way;

Open the sample gas pump switch.

Check the peristaltic pump discharge.

Check the condensate discharged from the

tube.
Check the filter, if the inside is wet,

replace the filter element in time, and dry
the filter chamber.
Check the cooler according to the

instruction manual.
Adjust the desired flow rate with a needle

valve.
Clean the filter and replace the filter

element.
Check the pump.

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