Evaporative Cooling Maintenance
Regularly scheduled maintenance is the key to peak performance, minimized cost, and extended life of the evaporative cooler.. The following is a checklist of items that need to be looked at on a regular basis..
1.The media should be checked for mineral and foreign material deposits that have built up.. If these items are left on the media, the life and performance of the unit will be greatly reduced.. Also, there are risks of water carryover when this type of condition exists.. When signs of mineral
2.The media should be periodically brushed lightly with a soft bristle brush in an up and down motion (never brush
3.The water should be shut off and all the lines drained when the temperature drops below 50ºF..
4.When the evaporative cooler is going to be used for the first time each season, it is recommended that the media be flushed with clean water for a period of 2 minutes (see Evap Module
5.At the beginning of each cooling season, the upright recirculating pump should have the shaft oiled and spun to eliminate the potential of seizing and pump burn out..
6.If the cooling media was removed from the unit, check to make sure that is not installed backwards.. If the media is installed backwards, there will be large amounts of water carry over downstream of the evaporative cooler.. Continuous operation in this manner may cause serious damage and void the warranty..
7.At the end of each cooling season the evaporative cooler should be thoroughly cleaned.. A dispersant and biocide (consult water treatment consultant for suitable materials and dosage levels) should be recirculated for 12 to 24 hours prior to performing the following steps:
a)Disconnect power to unit..
b)Shut off all water to the unit
c)Open evaporative cooling section door
d)Flush distribution headers and media for 20 minutes
e)Turn off pumps and drain all water distribution piping, headers, etc..
f)Dry media completely by running blowers..
g)Brush media as described in Paragraph 2 and perform steps d and e again..
h)Clean all remaining components (i..e.. sump, pump, etc..) of any mineral deposits or foreign materials
i)Replace all worn or
j)Reassemble the cooling unit..
k)Close cooling section door..
l)Turn the main disconnect ‘ON’, leaving the cooling switch in the ‘OFF’ position..
8.If the evaporative cooler will be turned off during the cooling season for an extended period of time, it is recommended that the media be dried out.. This can be accomplished by allowing the blowers to continue to run for
9.Media should be permitted to dry once per week by allowing the blowers to run for
10.A flush cycle should be performed weekly for one hour with the fans off..
important
Replacement media should be from the same manufacturer and be the same size as the original media provided with the unit..
To remove media, disconnect water line to evap header as shown below.. Then slide media section out of unit.. Sump will remain in unit.. If media is wet, turn off water supply, then turn on unit and allow air to flow thru media for
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