LA 33TPR
11 Faults/troubleshooting/
repair
This heat pump is a quality product and is designed for trouble-
free operation. In the unlikely event that a fault should occur,
please inform the responsible after-sales service.
CAUTION!
Work on the heat pump must only be performed by
authorised and qualified after-sales service technicians!
NOTE
The repair instructions must be observed.
The following steps must be adhered to before starting the
work
1)
Before starting the work, ensure that the power supply to
the device is disconnected externally.
2)
It is prohibited to remain in the direct vicinity of the device
during storms (risk of lightning)!
3)
Work outdoors on electrical equipment or live components
may only be carried out in dry weather conditions. Do not
perform any such work if it is raining, snowing or there is
other precipitation.
4)
The refrigeration circuit must not be damaged.
5)
The device contains combustible refrigerant. Avoid ignition
sources in the safety zone!
6)
Before opening the device, check the work environment
with a suitable gas detector. Position the gas detector
switched on in the device during all subsequent work.
Carry out a leakage tightness test before switching on the ex-
ternal power supply.
A mobile switch-off device must be mounted before connect-
ing the external power supply (see cap. 3.4 on page XI). If there
is a risk of refrigerant escaping during repair work, a mobile ven-
tilation (ex-proof fan) can be used as a supporting or even es-
sential measure.
All repair work must only be carried out by a technician who is
trained in handling flammable refrigerants, has the necessary
experience and fulfils the legal requirements in the relevant
country where the refrigerating system is operated.
Before starting the repair work on the relevant component, the
paint protector must be checked to ensure it is in the original
state. Paint protectors that have to be removed for the repair
work must be mounted again once the work is complete.
Before starting the repair, the system log book must be ob-
served with respect to repairs and modifications already carried
out.
CAUTION!
The leakage tightness of the refrigerant circuit must be tested
after all assembly work is complete and the external power
supply (load and control voltage) has been connected.
CAUTION!
Maintenance and operating instructions for the machine and
the switch box must be taken into account.
CAUTION!
After disconnecting the power supply, you have to wait 5
minutes before all components are de-energised.
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CAUTION!
The long-term leakage tightness of the entire hydraulic circuit
must be ensured (for example through repeated inspection).
The device is a permanently technically sealed system. In rare
cases, however, leakages may occur on the plate heat ex-
changer due to freezing. The risk is increased in particular in the
event of tampering on the dirt traps, if the requirements for fill-
ing the hydraulic circuit are not complied with, or if the mini-
mum flows are not observed.
CAUTION!
Commissioning, maintenance and repair only by personnel
who have verifiably been trained in dealing with the
refrigerant propane.
12 Decommissioning/disposal
Before removing the heat pump, disconnect the machine exter-
nally from the power source and shut it off hydraulically. The
heat pump must be dismantled by trained personnel. Observe
all environmental requirements regarding the recovery, recy-
cling and disposal of materials and components in accordance
with all applicable standards. Particular attention should be
paid to the proper disposal of the flammable refrigerant and re-
frigerant oil. Anyone carrying out work on the refrigeration cir-
cuit must be certified to safely handle flammable refrigerants or
be supervised by a person with such certification.
CAUTION!
Work on the heat pump must only be performed by
authorised and qualified after-sales service technicians!
CAUTION!
It is prohibited to remain in the direct vicinity of the device
during storms (risk of lightning)!
CAUTION!
Work outdoors on electrical equipment or live components
may only be carried out in dry weather conditions. Do not
perform any such work if it is raining, snowing or there is other
precipitation.
CAUTION!
Before removing the heat pump, disconnect the machine
externally from the power source.
CAUTION!
After disconnecting the power supply, you have to wait 5
minutes before all components are de-energised.
452166.66.14 · FD 0008
English
EN-17