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Installation and Commissioning Guide
Hercules Package Unit
Installation and Commissioning Guide - Hercules Package Unit
Doc. No.0525-021
Ver. 21 221110
25. Maintenance
Maintenance Procedures
This section describes the procedures that must be performed as a part of normal maintenance program. Regular servicing
of equipment by licensed technician is highly recommended. Regular servicing of your unit helps in maintaining its optimum
performance and reliability.
The checklist and service periods provided on this manual are guides only, as some sites
may require more frequent servicing
. Always disconnect electrical power to the unit before performing these procedures.
It is always a safe practice to observe all safety warnings and cautions when conducting maintenance tasks.
DANGER
Live Electrical Connections !
It may be necessary to work with live electrical components on certain maintenance tasks. Only licensed electricians and
qualifi ed technicians are allowed to perform these tasks.
Beware of Rotating Fan Blades !
• Always make sure that all power supply, to the Outdoor Fans are turn-off and isolated.
• Observe WH&S safety procedures, do not wear loose clothing and any jewellery when working near the fans.
• Wear PPE whenever performing any maintenance procedures.
• Observe all necessary procedures when working on a confi ned space.
WARNING
Hazardous Voltage !
Always make sure that all power supply, including remote controls, are disconnected before performing maintenance. Observe
proper LOCK-OUT/TAG-OUT (LOTO) procedures to ensure that power cannot be inadvertently energised. Failure to disconnect
power before maintenance procedures can result in serious injury and/or death.
EC Motors and Inverter Drives are fi tted with high power capacitors and can have dangerous residual voltages at motor
terminals after power has been isolated. Wait at least 5 minutes after power isolation and test for any residual voltage before
beginning service work.
Periodic Maintenance Checklist
•
Perform all monthly maintenance inspections
•
Inspect coil surfaces for cleanliness. Clean as required, apply cleaning procedures based on prevailing industry standard.
•
Inspect unit air fi lters, clean or replace as required.
Annual Maintenance Checklists
•
Perform general maintenance inspections.
•
Perform scheduled start-up checks.
•
Leak test refrigerant circuits.
•
Inspect contacts of all contactors and relays. Replace all worn contacts as required.
•
Inspect, clean and tighten all electrical connections.
•
Check fans for balanced operation. Make sure that there are no loose screws / bolts, no fan blades interference and no
damage to the fans and guards.
•
Inspect the air fi lters, clean or replace as required.
•
Clean and repaint any corroded panel section.
•
Ensure no blockage of airfl ow through variable speed drive.
