HTW A3 Serie Manual De Usuario E Instalacion página 40

a) Commissioning
• Make sure that the floor area is sufficient for the refrigerant charge or that the ventilation
The duct is assembled correctly.
• Connect the pipes and perform a leak test before charging with refrigerant.
• Check the equipment for safety before putting it into service.
b) Maintenance
• Portable equipment must be repaired outside or in a workshop specially equipped for
service units with flammable refrigerants.
• Ensure sufficient ventilation at the place of repair.
• Please note that equipment malfunction may be caused by loss of refrigerant.
• Discharge the capacitors in such a way that they do not cause sparks. The standard procedure
for shorting the capacitor terminals usually creates sparks.
Shorting the capacitor terminals usually creates sparks.
• Reassemble sealed enclosures with precision. If the seals are worn, replace them.
• Check the equipment for safety before putting it into service.
c) Repair
• Portable equipment must be repaired outside or in a workshop specially equipped for
service units with flammable refrigerants.
• Ensure sufficient ventilation at the place of repair.
• Please note that equipment malfunction may be caused by loss of refrigerant, and refrigerant
leakage may occur.
• Discharge the capacitors in a way that does not cause any sparks.
• When brazing is required, the following procedures shall be carried out in due order:
– Remove the coolant. If recovery is not required by national regulations, drain
the refrigerant outside. Take care that the drained coolant does not cause
any danger. In case of doubt, one person should guard the exit. Be especially careful that the
drained coolant does not float back into the building.
– Evacuate the refrigerant circuit.
– Purge the refrigerant circuit with nitrogen for 5 min.
– Evacuate again.
– Remove the parts to be replaced by cutting them, not with a flame.
- Purge the weld spot with nitrogen during the welding procedure.
- Carry out a tightness test before charging with refrigerant.
- Reassemble the sealed boxes with precision. If the seals are worn, replace them.
- Check the safety equipment before commissioning.
d) Disassembly
• If safety is affected when the equipment is out of service, the refrigerant
The charge will be removed before disassembly.
• Ensure sufficient ventilation at the location of the equipment.
• Please note that equipment malfunction may be caused by loss of refrigerant.
Refrigerant leakage is possible.
• Discharge the capacitors in a way that does not cause any sparks.
• Remove the coolant. If recovery is not required by national regulations, drain
the refrigerant outside. Take care that the drained coolant does not cause any
danger. In case of doubt, one person should guard the exit. Be especially careful that drained
The refrigerant will not float back into the building.
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