Hoval Belaria fit 53, Инструкция по установке и эксплуатации, Страница: 48 / 78

11. Maintenance
Safety
Operate in compliance with safety regulations in force. To
carry out the operations use protection devices:
gloves, goggles, helmet, headphones, protective knee
pads.
All work must be carried out by personnel who have been
instructed in the possible dangers of a general or electrical
nature, as well as in working on pressurised equipment.
Only qualified personnel can operate on the unit, as re -
quired by the regulation in force.
General
Maintenance must be performed by authorized centres or
by qualified personnel.
The maintenance allows to:
• to maintain the efficiency of the unit
• reduce the deterioration speed all the equipment is
subject to over time
• collect information and data to understand the status of
the units and prevent possible failures
WARNING
Before checking, please verify the following:
- The power supply for the unit has been interrupted.
- The disconnector of the power supply is open and
blocked, and the appropriate information sign is at -
tached to it.
- make sure no tension is present
- After switching the power off, wait at least 10 minutes
before accessing to the electrical panel or any other
electrical component.
- Before accessing check with a multimeter that there are
no residual stresses.
Frequency of interventions
Perform an inspection every 6 months.
However, frequency depends on the type of use. Pan in -
spections at close intervals in the event of:
• frequent use (continuous or very intermittent use, near
the operating limits, etc)
• critical use (service necessary)
WARNING
-
Read “Safety instructions - R32” on page
45
Do not go up to the surface
48 4 221 546 / 00
MaInTEnanCE