Binder MK 115, Operating Manual

Page: 118 / 159

MK / MKT (E5) 03/2019 page 118/158
23. Troubleshooting
Fault description Possible cause Required measures
General
Chamber without function.
No power supply. Check connection to power supply.
Wrong voltage.
Check power supply for correct volt-
age (chap. 4.4).
Main power switch (1) not
turned on
Turn on the main power switch (1).
MK/MKT 115, 240, 720: Rear
power switch (12) not turned
on. Turn on the rear power switch (12).
Chamber fuse has responded.
Check chamber fuse and replace it if
appropriate. If it responds again,
contact BINDER service.
Controller defective.
Contact BINDER service.
Nominal temperature exceed-
ed by 20 °C due to chamber
failure. Over temperature pro-
tective device (class 1) re-
sponds.
Heating
Chamber heating permanently,
set-point not maintained.
Semiconductor relay defective.
Contact BINDER service. Pt100 sensor defective.
Controller defective.
Controller not adjusted.
Calibrate and adjust controller.
Chamber doesn’t heat up.
Heating element defective.
Contact BINDER service.
Semiconductor relay defective
Chamber doesn’t heat up when
turned on.
Safety controller responds.
Inner chamber temperature
has reached the safety control-
ler setpoint. Safety controller
set too low.
Acknowledge the alarm on the con-
troller. Check temperature setpoint
setting. If appropriate, select suitable
safety controller setpoint (chap.
12.2).
Safety controller (chap. 12.2)
defective.
Contact BINDER service.
Safety controller class 2 responds Limit temperature reached.
Acknowledge the alarm on the con-
troller. Disconnect the chamber from
the power supply and let it cool
down. Detect cause and remove it.
Start up the chamber and check
control functions. If appropriate,
select suitable limit value.
Over-/under temperature safety
device class 2 (option) responds.
Limit temperature reached.
Acknowledge the alarm on the con-
troller. Disconnect the chamber from
the power supply and let it cool
down. Detect cause and remove it.
Press button “RESET CL 2.0” (2).
Start up the chamber and check
control functions. If appropriate,
select suitable limit value.