Rev. A 09-2017
39
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7. MAINTENANCE OF THE UNIT
It is advisable to maintain a record book for the unit which details all operations performed on the unit as this will
facilitate troubleshooting.
Maintenance must be performed in compliance with all requirements of the previous paragraphs.
Use personal protective equipment required by regulations as compressor casings and discharge pipes are at high
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Maintenance can:
•
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• Prevent failures
• Increase the equipment life
The start-up operations should be performed in compliance with all requirements of the previous paragraphs.
All of the operations described in this chapter MUST BE PERFORMED BY TRAINED PERSONNEL ONLY. Before
commencing service work on the unit ensure that the electric supply is disconnected. The top case and discharge
line of compressor are usually at high temperature. Care must be taken when working in their surroundings.
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7.2 Drive access
Access to the unit once installed, should only be possible to authorized operators and technicians. The owner of the equipment is the com-
pany legal representative, entity or person owns the property where the machine is installed.
They are fully responsible for all safety rules given in this manual and regulations.
7.3 Periodical checks
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It is advisable to perform periodic checks in order to verify the correct working of the unit.
• Check that safety and control devices work correctly as previously described.
•
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• Check and clean the sliding terminals of the contactors.
• Check for water leaks in the hydraulic system.
•
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• Check mounting of fan blodes and their balacing.
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If the unit is to be left out of commission for a long period, the hydraulic circuit should be drained down. This operation is compulsory if the
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