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SWIMMING POOL HEAT PUMP TYPE PV
5.
MAINTENANCE AND INSPECTION
Check the water supply device and the release often.
You should avoid the condition of no water or air
entering into system, as this will influence unit's
performance and reliability. You should clear the pool/
spa filter regularly to avoid damage to the unit as a
result of the dirty of clogged filter.
The area around the unit should be dry, clean and well
ventilated. Clean the side heating exchanger regularly
to maintain good heat exchange as conserve energy.
The operation pressure of the refrigerant system should
only be serviced by a certified technician.
Check the power supply and cable connection often.
Should the unit begin to operate abnormally, switch it
off and contact the qualified technician.
Discharge all water in the water pump and water
system, so that freezing of the water in the pump or
water system does not occur. You should discharge the
water at the bottom of water pump if the unit will not
be used for an extended period of time. You should
check the unit thoroughly and fill the system with
water fully before using it for the first time
Checks to the area
Prior to beginning work on systems containing flammable
refrigerants, safety checks are necessary to ensure that
the risk of ignition is minimised. For repair to the
refrigerating system, the following precautions shall be
complied with prior to conducting work on the system.
Work procedure
Work shall be undertaken under a controlled procedure
so as to minimise the risk of a flammable gas or vapour
being present while the work is being performed
General work area
All maintenance staff and others working in the local
area shall be instructed on the nature of work being
carried out. Work in confined spaces shall be avoided.
The area around the workspace shall be sectioned off.
Ensure that the conditions within the area have been
made safe by control of flammable material.
Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant
detector prior to and during work, to ensure the technician
is aware of potentially flammable atmospheres. Ensure
that the leak detection equipment being used is
suitable for use with flammable refrigerants, i.e.
non-sparking, adequately sealed or intrinsically safe.
Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration
equipment or any associated parts, appropriate fire
extinguishing equipment shall be available to hand.
Have a dry powder or CO2 fire extinguisher adjacent to
the charging area.
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No ignition sources
No person carrying out work in relation to a refrigeration
system which involves exposing any pipe work that
contains or has contained flammable refrigerant shall
use any sources of ignition in such a manner that it may
lead to the risk of fire or explosion. All possible ignition
sources, including cigarette smoking, should be kept
sufficiently far away from the site of installation, repairing,
removing and disposal, during which flammable refrige-
rant can possibly be released to the surrounding space.
Prior to work taking place, the area around the equip-
ment is to be surveyed to make sure that there are no
flammable hazards or ignition risks. "No Smoking" signs
shall be displayed.
Ventilated area
Ensure that the area is in the open or that it is adequately
ventilated before breaking into the system or conducting
any hot work. A degree of ventilation shall continue during
the period that the work is carried out. The ventilation
should safely disperse any released refrigerant and
preferably expel it externally into the atmosphere.
Checks to the refrigeration equipment
Where electrical components are being changed, they
shall be fit for the purpose and to the correct specification.
At all times the manufacturer's maintenance and service
guidelines shall be followed. If in doubt consult the manu-
facturer's technical department for assistance. The
following checks shall be applied to installations using
flammable refrigerants: The charge size is in accordance
with the room size within which the refrigerant containing
parts are installed; The ventilation machinery and outlets
are operating adequately and are not obstructed; If an
indirect refrigerating circuit is being used, the secondary
circuit shall be checked for the presence of refrigerant;
Marking to the equipment continues to be visible and
legible. Markings and signs that are illegible shall be
corrected; Refrigeration pipe or components are installed
in a position where they are unlikely to be exposed to any
substance which may corrode refrigerant containing
components, unless the components are constructed of
materials which are inherently resistant to being corroded
or are suitably protected against being so corroded.
Checks to electrical devices
Repair and maintenance to electrical components shall
include initial safety checks and component inspection
procedures. If a fault exists that could compromise safety,
then no electrical supply shall be connected to the circuit
until it is satisfactorily dealt with. If the fault cannot be
corrected immediately but it is necessary to continue
operation, an adequate temporary solution shall be used.
This shall be reported to the owner of the equipment so
all parties are advised. Initial safety checks shall include:
- That capacitors are discharged: this shall be done in a
safe manner to avoid possibility of sparking;
- That there no live electrical components and wiring
are exposed while charging, recovering or purging the
system;
- That there is continuity of earth bonding.
Alterations which serve the technological progress as well as errors excepted!
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