Binder KBF 1020 - Page 131

KBF / KBF-UL + KMF (E6) 09/2021 page 131/160
Fault description
Possible cause
Required measures
Refrigerating performance
Low or no refrigerating perfor-
mance.
Ambient temperature > 25 °C /
77 °F (chap.3.4).
Select cooler place of installation.
Combination of temperature/hu-
midity values not in the optimum
range (see temperature humidity
diagram, Figure 19).
Select combination of tempera-
ture/humidity values in the opti-
mum range (chap. 17).
Compressor not turned on.
Contact BINDER service.
Electro-valves defective.
No or not enough refrigerant.
Too much external heat load.
Reduce heat load.
Humidity
Humidity fluctuation:
Control accuracy of +/- 3 % r.h.
is not reached.
Door gasket defective.
Replace door gasket.
Door opened very frequently. Open doors less frequently.
Humidity fluctuation, together
with temperature fluctuation
> 1 °C with a set-point approx.
3 °C above ambient tempera-
ture.
Place of installation too hot.
Select cooler place of installation
or contact BINDER service.
No or low dehumidification.
Capillary tube blocked
Contact BINDER service.
Not enough refrigerant.
Humidity control turned off.
Turn on humidity control (chap.
6.3, 7.3).
Icing at the evaporator plates.
Set-point was too long below
ambient temperature.
Defrost the chamber (chap. 18).
Condensation at the walls of the
inner chamber.
Combination of temperature/hu-
midity values not in the optimum
range (see temperature humidity
diagram, Figure 19)
Select combination of tempera-
ture/humidity values in the opti-
mum range (chap. 17).
Set-point was too long below
ambient temperature, icing in the
preheating chamber.
Defrost the chamber (chap. 18)
Low humidity and temperature
accuracy
Fan speed has been reduced. Set fan speed to 100%.
Controller
No chamber function
(dark display).
Display mode “Standby” active.
Press on touchscreen.
Main power switch turned off.
Turn on the main power switch.
Menu functions not available.
Menu functions not available with
current authorization level.
Log in with the required higher au-
thorization. or contact BINDER
service to obtain an activation
code (chap. 13.6).
No access to controller
Password incorrect.
Contact BINDER service.
Chart recorder function: meas-
ured-value memory cleared; in-
formation lost.
New setting of storage rate or
scaling (minimum and/or maxi-
mum) (chap. 16.2).
Change the storage rate or scaling
ONLY if the previously registered
data are no longer required.
Controller does not equilibrate
to setpoints entered in Fixed
value operation mode
Controller is not in Fixed value
operation mode.
Change to Fixed value operation
mode.
Controller does not equilibrate
to program set-points.
Controller is not in program oper-
ation mode, or program delay
time is running.
Start the program again. If appro-
priate, wait for the program delay
time.