Pioneer PYZ012AZUDCIPD Owner's Manual page 6

O
PERATIONAL
Handling Procedures
PRELIMINARY PRECAUTIONS (CONT'D)
Checks for Refrigeration Equipment
When replacing electrical components, ensure they are suitable for the intended purpose and meet the correct
specifications. Always follow the manufacturer's maintenance and service guidelines. For any uncertainty, consult the
manufacturer's technical support for assistance.
The following checks must be performed on installations using flammable refrigerants:
Refrigerant Charge Size: Ensure that the charge size is appropriate for the room size where refrigerant-containing
parts are installed.
Ventilation: Verify that ventilation equipment and outlets are functioning properly and are unobstructed.
Indirect Refrigeration Circuit: If using an indirect refrigeration circuit, inspect the secondary circuit to confirm the
absence of refrigerant.
Equipment Markings: Ensure that all markings on the equipment remain visible and legible. Replace any illegible
markings or signs.
Corrosion Prevention: Confirm that refrigeration pipes or components are installed in a location where they are
unlikely to be exposed to substances that could corrode refrigerant-containing parts. If exposure is possible, ensure
the components are made from materials resistant to corrosion or are adequately protected.
Checking for Presence of Refrigerant
• Before and during work, use an appropriate refrigerant detector to check the area for potentially flammable
atmospheres.
• Ensure that the leak detection equipment is suitable for flammable refrigerants (i.e., non-sparking, adequately
sealed, or intrinsically safe).
• Presence of Fire Extinguisher
• If any hot work is required on the refrigeration equipment or related parts, have suitable fire extinguishing
equipment readily available.
• A dry powder or CO fire extinguisher should be placed near the charging area.
Checks for Electrical Devices
Repair and maintenance of electrical components must include initial safety checks and thorough inspection
procedures. If a fault is identified that could compromise safety, the electrical supply should not be connected until
the issue is resolved. If the fault cannot be immediately corrected but operation must continue, a suitable temporary
solution may be applied. This should be communicated to the equipment owner to ensure all parties are informed.
Initial safety checks should include:
• Ensuring capacitors are safely discharged to prevent any risk of sparking.
• Verifying that no live electrical components or wiring are exposed while charging, recovering, or purging the
system.
• Confirming continuity of earth bonding.
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NSTRUCTIONS
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