M&C TechGroup CG-2H-W_-2MH-W Operator's manual - Manual (Page 28)

28
Gas sampling and conditioning technology 9-0.2-ME
LED‟s do not light up
Valves do not switch over
Temperature controller out
of order
No mains power
Sub-D-plug not inserted in
socket X2
F1/2 fuses defective
Mains „ON‟
OK.
Check that mains cable fits properly
(X1);
OK.
Check whether sub-D-plug is present
and is properly plugged in;
OK.
Check whether bridge in sub-D-plug
exists (s. Fig. 6);
OK.
Check fuses and replace if necessary;
Converter does not heat up
LED K1 off
Heater defective
Temperature controller
defective
Solid-state relay defective
Sensor short Measure voltage at terminals X4/2 and
3;
OK.
Replace heater;
Not OK.
Measure voltage at terminal X4/6 and
7;
Voltage < 8V DC?
Check controller according to operat-
ing instructions;
Voltage > 8V DC?
Replace solid-state relay;
Change sensor;
Valves do not switch over
LED‟s do not light up No mains supply (see above)
Sub-D-plug not inserted into
socket X2 (see above)
Internal circuit;
No solder link 1-6 in sub-D-
plug
External circuit;
Error in external control see above
see above
Check sub-D-plug and if necessary
solder link;
Check external control;
Valves do not switch over
LED‟s light up Valve defective Check that valves function
No sample gas flow Valves defective (see above)
Gas sample lines
blocked or leaking See above
Check gas sample lines;
Check for gas-tightness
No conversion Cartridge spent
Cartridge does not heat up
(see above)
No sample gas flow (see
above) Change cartridge (17.1)
See above
See above
20 SPARE PART LIST
Wear, tear and replacement part requirements depend on specific operating conditions.
The recommended quantities are based on experience and are not binding.
Converter CG...