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of the appliance depends on the ventilation of
- the room. Switching off the appliance or open-
ing of the housing has no significant effect on
- the safety. The ventilation of the room shall
not be switched off during repair procedures.
- Information about the concept of sealed com-
ponents and sealed enclosures according to
IEC 6007915:2010.
- Information about the correct working proce-
dures:
COMMISSIONING
- Ensure that the floor area is sufficient for the
refrigerant charge or that the ventilation duct
is assembled in a correct manner.
- Connect the pipes and carry out a leak test
before charging with refrigerant.
- Check safety equipment before putting into
service.
MAINTENANCE
- Portable equipment shall be repaired outside
or in a workshop specially equipped for servic-
ing units with flammable refrigerants.
- Ensure sufficient ventilation at the repair
place.
- Be aware that malfunction of the equipment
may be caused by refrigerant loss and a
refrigerant leak is possible.
- Discharge capacitors in a way that won't
cause any spark. The standard procedure to
short circuit the capacitor terminals usually
creates sparks.
- Reassemble sealed enclosures accurately. If
seals are worn, replace them.
- Check safety equipment before putting into
service.
REPAIR
- Portable equipment shall be repaired outside
or in a workshop specially equipped for servic-
ing units with flammable refrigerants.
- Ensure sufficient ventilation at the repair
place.
- Be aware that malfunction of the equipment
may be caused by refrigerant loss and a
refrigerant leak is possible.
- Discharge capacitors in a way that won't
cause any spark.
(Original instructions)
- When brazing is required, the following proce-
dures shall be carried out in the right order:
- Remove the refrigerant. If the recovery is not
required by national regulations, drain
- the refrigerant to the outside. Take care that
the drained refrigerant will not cause any
danger. In doubt, one person should guard the
outlet. Take special care that drained refriger-
ant will not float back into the building.
- Evacuate the refrigerant circuit.
- Purge the refrigerant circuit with nitrogen for
5 min.
- Evacuate again.
- Remove parts to be replaced by cutting, not
by flame.
- Purge the braze point with nitrogen during the
brazing procedure.
- Carry out a leak test before charging with
refrigerant.
- Reassemble sealed enclosures accurately. If
seals are worn, replace them.
- Check safety equipment before putting into
service.
DECOMMISSIONING
- If the safety is affected when the equipment
is putted out of service, the refrigerant charge
shall be removed before decommissioning.
- Ensure sufficient ventilation at the equipment
location.
- Be aware that malfunction of the equipment
may be caused by refrigerant loss and a
refrigerant leak is possible.
- Discharge capacitors in a way that won't
cause any spark.
- Remove the refrigerant. If the recovery is not
required by national regulations, drain the
refrigerant to the outside. Take care that the
drained refrigerant will not cause any danger.
In doubt, one person should guard the outlet.
Take special care that drained refrigerant will
not float back into the building.
- Evacuate the refrigerant circuit.
- Purge the refrigerant circuit with nitrogen for 5
min.
- Evacuate again.
- Fill with nitrogen up to atmospheric pressure.
- Put a label on the equipment that the refriger-
ant is removed.
ENGLISH
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