Troubleshooting
©2022 nVent
89217391 Rev. A
107
12 Troubleshooting
12.1 Notes
The following must be observed in order to avoid injuries and damage to property:
•
Only qualified personnel are authorised to perform these tasks.
•
Comply with the information given in the "Safety" section.
DANGER
Risk of injury caused by electric current!
When the device is open, parts of the device may be energised and cause an
electric shock when they are touched.
The following points must be observed when performing work on the open unit:
•
Comply with the information that is given in the "Safety" chapter.
•
Only suitably qualified persons are authorised to perform these tasks.
1.
Disconnect the unit from the power supply in order to deenergise it.
2.
Secure the unit so that it cannot be switched on again accidentally.
3.
Check whether the unit is properly disconnected from power and
absolutely voltage-free.
4.
Earth and short-circuit the unit.
5.
Cover any adjacent live parts and secure the danger area.
WARNING
Carry out instructed work only!
There is an increased risk of injury to persons who perform tasks for which they
are not suitably qualified or trained.
Troubleshooting shall only be carried out by qualified personnel. Contact the
after-sales service particularly in the event of malfunctions in the electrical
system or the refrigeration unit (if provided).
WARNING
Risk of injuries for persons due to heavy objects!
The components mentioned above are very heavy and bulky.
Always have several persons carry out the installation or dismantling or use
appropriate lifting devices!
CAUTION
Risk of injury - the expansion vessel is under pressure!
The expansion vessel in the unit is under pressure when the unit is switched off
and depressurised.
When working on the expansion vessel, exercise extreme caution.
