Nibe F370 Installer Manual page 6

must be ventilation around any refrigerant
that comes out, which should be routed
outdoors.
CHECKING COOLING EQUIPMENT
If electrical components are replaced, the
replacement parts must be fit for purpose
and have the correct technical specifications.
Always follow the manufacturer's guidelines
regarding maintenance and servicing. Contact
the manufacturer's technical department in
the event of any doubts.
The following checks must be carried out for
installations that use combustible refriger-
ants.
• The filling quantity is appropriate for the
size of the space where the parts that
contain refrigerant are installed.
• Ventilation equipment and outlet work cor-
rectly and without obstructions.
• If an indirect refrigerant circuit is used,
check whether the secondary circuit con-
tains refrigerant.
• All markings of equipment are visible and
clear. Markings, signs and similar that are
not clear must be replaced.
• Refrigerant pipes and components are po-
sitioned in such a way that it is not likely
that they be subjected to substances that
can corrode components containing refriger-
ant, if these components are not made of
material that is resistant against corrosion,
or not appropriately protected against such
corrosion.
CHECKING ELECTRICAL EQUIPMENT
Repair and maintenance of electrical compon-
ents must include initial safety checks and
procedures for component inspection. In the
event of a fault, which can cause a safety
risk, do not supply any power to the circuit
until the fault has been rectified. If the fault
cannot be rectified immediately, and opera-
tion must continue, an adequate temporary
solution must be implemented. This must
be reported to the equipment owner, so that
all parties have been informed.
6 Chapter 1 | Important information
The following checks must be carried out at
the initial safety checks.
• That the capacitors are discharged. Dischar-
ging must be done safely, to prevent the
risk of sparking.
• That no powered electrical components or
live cables are exposed when filling or col-
lecting refrigerant or when the system is
flushed.
• That the system is continually earthed.
REPAIRING SEALED COMPONENTS
When repairing sealed components, all
electrical supply must be disconnected from
the equipment that is being repaired before
any sealed covers or similar are removed. If
it is absolutely necessary to have an electri-
city supply to the equipment during the ser-
vice, continuously activated leak tracing must
be performed at the most critical points in
order to warn of any dangerous situations.
Pay particular attention to the following so
that the sheath is not changed in a way that
affects the protection level when working
with electrical components. This means
damage to cables, unnecessary amounts of
connections, terminals that do not follow the
original specifications, damaged gaskets, in-
correct grommets etc.
Ensure that the apparatus is secured prop-
erly.
Check that seals or sealing materials have
not deteriorated to a degree that they can no
longer prevent combustible gases from en-
tering. Replacement parts must meet the
manufacturer's specifications.
NOTE
Use of silicone seals can hamper the
efficiency of certain types of leak-tra-
cing equipment. Components with
built in safety do not need to be isol-
ated before starting work.
NIBE F370