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HWMC
All copying, even partial, of this manual is strictly forbidden
RG66008809 - Rev 00
7
ROUTINE MAINTENANCE AND CHECKS
It is necessary to periodically check the correct functioning of safety devices
(pressure switches and safety valves) and that there are no leaks of refrigerant.
After the initial start-up, periodic checks must be conducted at the intervals
and in the manner prescribed by current national laws and regulations.
To keep the unit in good working order and guarantee the expected levels of
performance and safety, it is necessary to carry out some periodic routine
checks: some may be performed directly by the user while others must be
carried out solely by specialised personnel.
7.1
CHECKS TO BE PERFORMED BY THE USER
The checks and operations described in this section may be easily performed
by the user, provided that the latter shows a minimum of attention.
- Remove any dirt that has built up around the coil or objects trapped in
the mesh protecting the coil itself (leaves, paper etc., to be carried out
monthly).
Warning
Be especially careful when working in proximity to finned
coils since the aluminium fins are extremely sharp and can cause cuts.
- Check the level of water in the circuit using the water pressure gauge,
which should indicate a pressure of about 1.5 bars (monthly).
- Check that the escape pipe of the water safety valve is tightly secured.
- Check the water circuit for leaks (monthly).
- If the unit is to remain out of service for a long time, drain the water (or
other fluid present in the circuit) from the pipes and the unit itself.
This is indispensable if during the period of quiescence the ambient
temperature is expected to fall below the freezing point of the fluid used
(seasonal operation).
Drain the unit and parts of the circuit subject to the risk of freezing by
opening the RS emptying tap (optional).
Before placing the unit back in service at the start of the season, refill
the water circuit as directed in section 1.4.
- Check that the noise emissions of the unit are regular (monthly).
- If necessary, release the pump rotor P and S models)
7.2
CHECKS AND MAINTENANCE TO BE PERFORMED BY
SPECIALISED PERSONNEL
WARNINGS
Important!
All the operations described in this section MUST ALWAYS BE
PERFORMED BY QUALIFIED PERSONNEL.
Warning
Before carrying out any work on the unit or accessing internal
parts, make sure you have disconnected it from the mains electricity supply.
Warning
The upper part of the compressor casing and the outlet pipe
reach high temperatures. Be especially careful when working in their vicinity.
Warning
Be especially careful when working in proximity to finned
coils since the aluminium fins are extremely sharp and can cause cuts.
Warning
Never attempt to access internal parts of the unit
without having first disconnected it from the power supply. Wait
another 5 minutes before accessing the internal parts of the unit
Warning
The electrical components of the inverter power unit are
live when it is connected to the mains voltage.
Coming into contact with this voltage is extremely dangerous and
can cause death or serious harm.
Warning
The inverter unit has capacitive leakage current . Set a
dedicated power line, with calibratable differential switch, separate
from the other power lines of home appliances.
Warning
The dissipator may be hot when the inverter is running.
Come into contact with the dissipator can cause burns
.
Warning
Do not perform any voltage insulation test on any
component.
Important!
After completing maintenance jobs, always replace the panels
enclosing the unit and secure them with the fastening screws provided.
The checks and operations described in this section must be carried out on
a yearly basis by specialised personnel.
- Check the electric control board terminals to ensure that they are securely
tightened: the movable and fixed contacts of the circuit breakers must
be periodically cleaned and replaced whenever they show signs of
deterioration.
- Check the compressor and pipes for oil leaks.
- Check the efficiency of the water differential pressure switch.
- Clean the metal filters mounted in the water pipes.
- Clean the finned coil by aiming a jet of compressed air in a direction
opposite to the outflow of air, taking care not to bend the fins.
8
RETIRING THE UNIT
When the unit has reached the end of its working life and needs to be removed
and replaced, a series of operations should be carried out:
- the refrigerant gas it contains should be recovered by specialised personnel
and sent to a waste collection facility;
- the lubricating oil in the compressor should also be recovered by specialised
personnel and sent to a waste collection facility;
- if they cannot be reused, the framework and components should be
scrapped and separated according to the type of material: this applies
especially for the considerable quantities of copper, aluminium and steel
present in the unit.
This will make the job of waste collection, disposal and recycling facilities
easier and minimise the environmental impact of the dismantling.
Installation and maintenance may be carried out solely by qualified
technicians specifically trained for this type of equipment, in conformity
with current regulations.
On receiving the equipment, check that it has not undergone any damage
during transport.
For installation and use of accessories, please refer to the relative technical
sheets.