Pioneer PYZ012AZUDCIPD Owner's Manual page 7

O I
PERATIONAL NSTRUCTIONS
Handling Procedures
MAINTENANCE, SERVICING, & REPAIRS
Repairs to Sealed Components
When repairing sealed components, disconnect all electrical supplies from the equipment before removing any
sealed covers or similar parts. If it is absolutely necessary to have an electrical supply during servicing, a continuously
operating leak detection device should be positioned at the most critical point to provide early warning of a
potentially hazardous situation.
Take particular care to ensure that repairs do not compromise the protective casing of electrical components. This
includes avoiding:
• Damage to cables,
• Excessive or improper connections,
• Use of terminals that don't meet original specifications,
• Damage to seals, or
• Incorrect fitting of cable glands.
Ensure that all components are securely mounted, and that seals or sealing materials have not degraded to the point
where they no longer prevent the ingress of flammable atmospheres. Replacement parts should be consistent with
the original specifications.
Note: Be aware that using silicone sealant may impair the effectiveness of certain types of leak detection equipment.
Exception: Intrinsically safe components do not need to be isolated before working on them.
Repair of Intrinsically Safe Components
Do not apply any permanent inductive or capacitive loads to the circuit without verifying that they do not exceed
the permissible voltage and current limits for the equipment in use. Intrinsically safe components are the only types
that may be worked on while live in the presence of a flammable atmosphere. Ensure that the test apparatus is
correctly rated for the task.
Replace components only with parts specified by the manufacturer, as using non-specified parts may lead to
ignition of refrigerant from a potential leak.
Cabling
Ensure that cabling is protected from potential wear, corrosion, excessive pressure, vibration, sharp edges, or any
other adverse environmental effects. Consider the impact of aging and constant vibration from components like
compressors or fans when assessing cable durability.
Detection of Flammable Refrigerants
Under no circumstances should potential sources of ignition be used to search for or detect refrigerant leaks. Do not
use a halide torch or any other detector that involves an open flame.
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