M&C TechGroup BA-P4 Operator's manual - Manual (Page 25)

25
Gas sampling and conditioning technology 10-1.1-ME
17 TROUBLE SHOOTING
The table below is intended to indicate possible causes of faults and the remedial actions to be taken
(applies only to operationally ready combustion air conditioning units).
Problem/Indication Possible cause Check/Remedial action
LED‟s do not light,
pump does not pump
or three-way directio-
nal control valves do
not switch, tempera-
ture controller does
not function.
No system voltage.
Sub-D-Plug not plugged
into socket X2.
Internal control:
Jump not present in Sub-
D-Plug.
Fuses F1/F2 blown. Check mains cable for correct seating (X1);
ok?
Check whether Sub-D-Plug is present or not
properly plugged in; ok?
Check Sub-D-Plug;
ok?
Check fuses and replace if necessary.
Tube furnace does
not heat.
Heater faulty.
Temperature
controller
faulty.
Solid state relay faulty.
Measure voltage at terminals X4/2 and 3;
ok?
Replace heater;
not ok?
Measure voltage at terminal X4/6 and 7;
voltage <8VDC?
Check controller as specified in operating
instructions
voltage >8VDC?
Replace solid state relay.
Pump does not pump
or three-way directio-
nal control valve does
not switch, LED‟s do
not light.
No system voltage. (see
above).
Sub-D-Plug not plugged
into
socket X2 (see
above).
Internal control:
Jumper 1-6 not present in
Sub-D-Plug.
External control:
Fault in external control.
See above
Check Sub-D-Plug and solder jumper in place.
Check external control.
Pump does not pump
or three-way directio-
nal control valve does
not switch, LED‟s
light.
Pump (BA-P4 version)
faulty,
three-way directional
control valve faulty,
operating temperature not
reached. Check pump for function.
Check valve for function.
Check temperature controller.
No measuring gas
flow.
Pump/valve faulty (see
above).
Measuring gas lines
leaky. See above
Check for leaks (15.7)
and check measuring gas lines if necessary.