BINDER KBF LQC 240 - Manual (Page 98)

KBF LQC (E5.3) 07/2014 page 98/114
20. Troubleshooting
Fault description Possible cause Required measures
Heating
Chamber heating permanently,
set-point not held.
Controller defective.
Contact BINDER service.
Semiconductor relay defective.
Controller not well adjusted, or
adjustment interval exceeded.
Calibrate and adjust controller.
Chamber doesn’t heat up.
Pt 100 sensor defective.
Contact BINDER service. Heating element defective.
Semiconductor relay defective
Chamber doesn’t heat up when
turning on the chamber.
Safety controller responds.
Limit temperature reached. Safe-
ty controller (chap. 11.2) set too
low.
Let the chamber cool down and
hit RESET button of MB1 control-
ler. If appropriate, select suitable
limit value.
Safety controller (chap. 11.2)
defective.
Contact BINDER service.
Unit without function.
No power supply.
Check connection to power sup-
ply.
Wrong voltage.
Check power supply for voltage
of 115V or 230V.
Unit fuse has responded.
Check unit fuse and replace it if
appropriate. If it responds again,
contact BINDER service.
Controller defective.
Contact BINDER service.
Nominal temperature exceeded
by 10° due to unit failure. Over
temperature protective device
(class 1) responds.
Mechanical safety device class
3.1 responds
(with option safety device class
3.3).
Limit temperature reached.
Check setting of temperature set-
point and of safety device class
3.1. If appropriate, select suitable
limit value.
Too much external heat load. Reduce heat load.
Controller defective.
Contact BINDER service. Safety device defective.
Semi-conductor relay defective
Mechanical safety device class
3.2 responds
(with option safety device class
3.3).
Limit temperature reached.
Check setting of temperature set-
point and of safety device class
3.2. If appropriate, select suitable
limit value.
Controller or safety device defec-
tive.
Contact BINDER service.
Refrigerating performance
No or too low refrigerating per-
formance.
Ambient temperature > 25 °C /
77°F (chap.3.4).
Select cooler place of installation.
Combination of tempera-
ture/humidity values not in the
optimum range (see temperature
humidity diagram, Figure 22).
Select combination of tempera-
ture/humidity values in the opti-
mum range (chap. 13).
Compressor not turned on.
Contact BINDER service.
Electro-valves defective.
No or not enough refrigerant.
Too much external heat load.
Reduce heat load.