to see if it contains refrigerant;
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The marking of the equipment must be visible. The signs and symbols
that are illegible will be corrected;
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The pipes or components of the refrigeration plant are placed in a position
where they are unlikely to be exposed to any substance that may
corrode the components containing refrigerant unless the components are
made of corrosion-resistant materials or suitably protected materials
against corrosion.
9)
Checking electrical devices
The repair and the maintenance of electrical components must include initial safety
checks and component inspection procedures. If there is a failure that
could compromise the safety, the circuit must not be connected to any power
source until the failure is treated satisfactorily. If the failure cannot be corrected
immediately, but operating is still necessary, an appropriate temporary solution
should be used. This must be reported to the owner of the equipment so that all
parties are informed. The initial safety checks shall be carried out if:
-
capacitors are discharged: this is done in a safe manner to avoid the
occurrence of sparks;
-
electrical components and electrical cables are not exposed during charging,
refurbishing or cleaning the plant;
-
there is grounding continuity.
10) Repair of sealed items
While sealed items are being repaired, all power sources must be disconnected from
the equipment it must be intervened on, before any removal of the sealed caps, etc.
If it is absolutely necessary to power the equipment during service, then a
continuous leakage detection system should be considered at the most critical
point to warn in case of a potentially hazardous situation.
Particular attention must be paid to the following aspects in order to ensure
that while working on the electrical components, the housing is not modified in
such a way that the protection level is affected. These include cable damage,
excessive number of connections, terminals which do not comply with
the original specifications, seals damage, improper seals fitting, etc.
Ensure that the appliance is safely mounted. Ensure that the seals or the sealing
materials are not degraded so that they are no longer used for the purpose
of preventing the penetration of flammable gases. Spare parts must be in
accordance with the specifications of the manufacturer.
11) Repairs brought to intrinsically safe components
Do not use permanent inductive or capacitive loads in the circuit without
ensuring that they do not exceed the voltage and power allowed for the
equipment used. The intrinsically safe components are the only types it can be
worked on in the
EN