Instrucciones de uso_HF3_14_es.pdf - 第624页
29 2KE0041502 - englisch_BA 04.1 1.2010 ENGLISH 13. Malfunctions / Troubleshooting Fa ul t D i s pl a y Ma l func t i on / Ca us e Re me dy F 7 T em p erat u re l i mi t v al u es exceed ed Se ns or F 1 W at er t em pera…
28
2KE0041502 - englisch_BA
04.11.2010
ENGLISH
13. Malfunctions / Troubleshooting
Fault Display Malfunction / Cause Remedy
F5
E3 - off
Low-pressure fault
- Ambient temperature too low Increase ambient temperature
- Water temperature too low Increase water temperature
- Water volume too low
Filter contaminated
Shut-off valve closed
Clean filter, replace if necessary
Check shut-off valve
Refrigerant shortage due to leak in
refrigeration cycle
Refrigerant shortage
Defective expansion valve
The elimination of faults in the refrigeration
cycle may only be performed by qualified
personnel!
Permanent bubble formation in sight glass Call customer service !
After the cause of the low-pressure fault
has been eliminated, the fault is auto-
matically reset. The compressors and
fans are enabled after a time delay of 180
sec.
F5 A
E3 - aus
Low-pressure fault (SHUT-DOWN)
Refrigerant shortage due to leak in
refrigeration cycle
Refrogerant shortage
Defective expansion valve
The elimination of faults in the refrigeration
cycle may only be performed by qualified
personnel!
Contin. formation of bubbles in sight glass Call customer service !
After the cause of the low-pressure fault
has been eliminated, the fault is auto-
matically reset. The compressors and
fans are enabled after a delay of 180 sec.
Acknowledge/reset fault by means of
DOWN button
F6
E4 - off
Compressor motor protecting switch has
tripped
Motor overloading due to mechanical
sluggishness
Check compressor or fan, replace if
necessary
Place motor protecting switch in position
–1–
Motor overloading due to phase failure
Correct phase failure. Place motor
protecting switch in position –1–
Overheat protection (thermal contact) of
compressor, fan has tripped
Will automatically be enabled after motor
has cooled down
Acknowledge/reset fault by means of
DOWN button
29
2KE0041502 - englisch_BA
04.11.2010
ENGLISH
13. Malfunctions / Troubleshooting
Fault Display Malfunction / Cause Remedy
F7 Temperature limit values exceeded
Sensor F1
Water temperature too low
Increase water tem perature
Water temperature too high
Allow water to cool, or replace
F8 Temperature limit values exceeded
SensorF2
Water temperature too low
Increase water tem perature
Water temperature too high
Allow water to cool, or replace
EP
Eeprom error
Parameters are permanently checked in the
controller for consistency during operation.
Any error in this memory is indicated by a
general fault alarm.
Replace controller.
30
2KE0041502 - englisch_BA
04.11.2010
ENGLISH
14. OPTIONS
14.1 Water Circuit
Pressure Gauge
The pressure gauge indicates the pressure prevailing at the water outlet and inlet.
Fixed Bypass
The fixed bypass ensures the minimum flow rate in the water circuit. Evaporator and pump in
the closed recirculating system and the single-circuit system are thus protected.
The design of the fixed bypass is project-specific.
Temperature Limit Values
The water temperatures in the water circuit are monitored by limit values. If the preset limit
values are exceeded or not reached, a common fault alarm is issued on the control panel.
Insulation of Water Pipes and Pump(s)
At water temperatures < 12°C, the water pipes and pump(s) have to be insulated. The
formation of condensation water can thus be avoided.
Flow Control Switch
The flow control switch fitted in the water inlet pipe is designed to control the flow rate in the
water circuit. Any time the preset flow rate is not achieved, a common fault alarm is released
and displayed on the control panel via the appropriate error code.
14.2 Electrical System
24 V Remote Control
The process cooler is switched ON and OFF via a 24 V remote control unit. The 24 V signal is
to be connected in accordance with the circuit diagram.
Connecting Cable with plug
The process cooler is delivered ready for plug-in.
14. Options