Binder MKF 115, Operating Manual

Page: 84 / 115

MKF+ MKFT (E3.2) 07/2017 page 84/115
19. Troubleshooting
Fault description Possible cause Required measures
Heating
Chamber without function.
Turning on the main power
switch (3) has no effect
Rear power switch (20) not turned on.
Turn on the rear power switch
(20) at least one hour before
operating the chamber.
Chamber heating permanently,
set-point not maintained.
Semiconductor relay defective.
Contact BINDER service. Pt 100 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.
Limit temperature reached. Safety
controller (chap. 12.2) set too low.
Let the chamber cool down and
press the RESET button of the
MB1 controller. If appropriate,
select suitable limit value.
Safety controller (chap. 12.2) defec-
tive.
Contact BINDER service.
Chamber permanently turned
off.
Nominal temperature exceeded by 20
°C due to chamber failure. Over tem-
perature protective device (class 1)
responds.
Contact BINDER service.
Safety device class 2
responds.
Limit temperature reached.
Disconnect the chamber from
the power supply and let it cool
down. Detect the cause and
remove it. Press the “RESET”
button at the controller.
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.
Disconnect the chamber from
the power supply and let it cool
down. Detect cause and re-
move it. Press button “RESET
CL 2.0” (5).
Start up the chamber and check
control functions. If appropriate,
select suitable limit value.
Refrigerating performance
No or low refrigerating perfor-
mance.
Ambient temperature > 25 °C / 77°F
(chap.3.4). Select cooler place of installa-
tion.
Combination of temperature/humidity
values not in the optimum range (see
temperature humidity diagram, Figure
19).
Select combination of tempera-
ture/humidity values in the op-
timum range (chap. 14).
Compressor not turned on.
Contact BINDER service. Electro-valves defective.
No or not enough refrigerant.
No refrigerating performance;
notification “1H PREHEAT
PHASE” in the controller dis-
play.
Rear power switch (20) turned on
less than 1 hour before operating the
chamber. Turn on the rear power switch
(20) at least one hour before
operating the chamber.