Water Chiller Service of Evaporator

Service to Water Chiller Shell of Evaporator

Not often does water chiller service to chiller evaporator fault occur. Usually the evaporator has frozen up and burst the tubes inside the shell. This fault involved the shell of the chilled water system itself bursting. On close inspection- the shell was made out of thin steel- not the usual heavy rolled steel. It looked like the near end on the photo had sagged down, causing the evaporator shell to buckle

Replacement of Evaporator

This option would be expensive due to the cost of the evaporator. It would be a difficult  visit because of access issues. The builders decided to site the water chillers round the back of the building. This makes glycol chillers very difficult to service. A dedicated lift and shift company would be needed to get the old chiller evaporator out and the new on in. There is a difficult corner to get round where the evaporator would have to be tilted up to get it round. Also, a fence wound have to be taken down around the chillers. Of course security is an issue but so is chilled water system service to glycol chillers and air cooled chillers

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Water Chiller Service with Silver Solder

Because of the above it was decided by the customer to attempt water chiller service using silver solder. The Risk Assessment Method Statement allowed for the chilled water system service to be carried out with a half hour fire watch. The oxy-acetylene lines were leak tested prior to the job. Both leaks were soldered up but despite the evaporator being drained down, there was still water and steam trying to get out. Not the best water chiller service soldering resulted- but it held

Air Cooled Chiller Paintwork

Because air cooled chillers are usually outside- the chiller paintwork is essential. Poor water chiller service of paintwork will reduce the it's life. After preparing the surface, direct to rust paint was applied so as to protect it for the future

Lagging Service for Glycol Chiller

The main purpose of Armour Flex lagging is to reduce heat gain from the environment to the water chiller being serviced. This provides protection from the elements for the glycol water chiller as well

See the Institute of Refrigeration Evaporator efficiency Click Here