Whirlpool 20K Manual Del Usuario página 42

- 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.
6-9 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
satisfactory 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 parts 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.
7. Repairs to sealed components
During repairs to sealed components,
all electrical supplies shall be
disconnected from the equipment
being worked upon prior to any
removal of sealed electrical supply
to equipment during servicing, then
a permanently operating form of
leak detection shall be located at
the most critical point to warn of
a potentially hazardous situation.
Particular attention shall be paid to the
following to ensure that by working on
coelectrical components. The casing
is not altered in such a way that the
level of protection is affected. This shall
include damage to cables, excessive
number of connections, terminals
not made to original specification,
damage to seals, incorrect fitting of
glands, etc. Ensure that apparatus is
mounted securely. Ensure that seals or
sealing materials have not degraded
such that they no longer serve the
purpose of preventing the ingress of
flammable atmospheres. Replacement
parts shall be in accordance with the
manufacturer's specifications.
NOTE:
The use of silicon sealant may inhibit
the effectiveness of some types of leak
detection equipment. Intrinsically safe
components do not have to be isolated
prior to working on them.
8. Repair to intrinsically safe
components
Do not apply any permanent inductive
or capacitance loads to the circuit
without ensuring that this will not
exceed the permissible voltage and
current permitted for the equipment
in use. Intrinsically safe components
are the only types that can be worked
on whilelive in the presence of a
flammable atmosphere. The test
apparatus shall be at the correct rating.
Replace components onlywith parts
specified by the manufacturer. Other
parts may result in the ignition of
refrigerant atmosphere from a leak.
9. Cabling
Check that cabling will not be subject
to wear, corrosion, excessive pressure,
vibration, sharp edges or any other
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