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MAINTENANCE
6.0 SERVICE AND MAINTENANCE
WARNING!
Aira AL units require electrical and plumbing trades to service all aspects of the unit. Servicing should
be carried out by a qualified Seeley International Service Technician, appointed Aira service agent or appropriately
qualified trades persons. If unsure about any servicing or maintenance aspect of the unit, immediately stop work and
contact Seeley International for assistance.
Aira units are often manufactured to exact customer specifications. When ordering spare parts, the unit serial number
must be used to ensure the correct components are supplied.
When working on the heat exchanger section care must be taken to ensure all parts have sufficiently cooled before
commencing any service or maintenance activities.
Appropriate PPE should always be worn which includes but is not limited to safety glasses, hearing protection
and gloves. Additional site requirements may require additional PPE, especially when working on roof tops or in
commercial/industrial facilities.
Any maintenance required by Australian Standards shall be carried out at required intervals.
Table 5: Inspection and Service of Major Components is the minimum recommended inspection and service schedule.
A detailed service schedule and Maintenance checklist can be found in Appendix C. Appendix C also contains a
monthly checklist for the owner
Cooler Maintenance
6.1 COOLER MAINTENANCE
6.1.1 Cooler Maintenance
THIS SECTION DETERMINES THE LIFE SPAN OF THE COOLER
1. Turn off electric power supply following LOTO procedures. Isolate the water supply to the unit.
2. Remove pad assemblies as per 3.5.6 Cooling Pads
3. Check condition of Pads – use a hose to clean dirt off pads. Do not use excess water pressure as this may make
holes in the pads. If pads are to be replaced obtain replacement pads from the manufacturer. Replacement pads
are made to order.
4. Drain the unit via the drain or auto drain valve if installed and clean out the internal tray of the unit ensuring all
foreign debris is being removed. De-isolate the water supply to the unit and confirm that the float valve stops flow
at the required level. DO NOT add any biocides to the water tray after filling.
5. Check condition and tension of fan belt/s. Adjust and/or replace as necessary.
6. Re-grease fan shaft bearings.
7. Check pump operation and that bleed-off is operating correctly and not blocked.
8. Refit pad frames and start up unit in accordance with operating instructions.
9. De-isolate the electrical power and run the unit to confirm that pads are sufficiently saturated. Adjust if necessary.
Component
Belts
Pulleys
Motor
Table 5: Inspection and Service of Major Components
Minimum Inspection and Service Schedule
Quarterly visual inspection/ 6 monthly thorough inspection
Quarterly visual inspection/ 6 monthly thorough inspection
In accordance with manufactures specifications
Every 3 Months
AL SERIES INSTALL OPERATION MAINTENANCE MANUAL |
AMI055-A
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