Inspect all hoses and fittings, and the stillwell assembly, for signs of leaks.
Repair any problems.
7.3.4
Input Water Supply
There is a water filter between the solenoid and the input water supply hose.
This is to intercept any fine debris that may prevent the solenoid from
closing. The filter should be checked regularly. It may be removed, washed
and replaced. How often this will be required will depend on the quality of
the water supply.
To clean or change the filter:
1.
Open the enclosure and grasp the body of the filter.
2.
Unscrew the filter cap located on the outside of the enclosure.
3.
Remove, clean and replace the filter element.
4.
Reassemble the system and check for leaks.
7.3.5
Solenoid/Pump
Regularly check the operation of the solenoid and pump. To check the
condition and serviceability of the solenoid and/or pump:
1.
Connect each device to the TEST position of the control module. It
should turn on and operate continuously.
2.
Measure the water flow from each device by timing the flow into the
volumetric flask.
3.
Compare the flow test results with previous checks. A significant
reduction in the flow rate will indicate the need for cleaning, or
replacement.
4.
Check that the solenoid does not leak in the off position.
Service kits for solenoids are available from Goyen Valves or UNIDATA.
Spare pumps can be obtained from UNIDATA. A spare solenoid and pump,
or service kits, should be kept at the site ready for use.
Automatic Evaporation System
SITE VISITS AND MAINTENANCE 47
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UNIDATA
48 SITE VISITS AND MAINTENANCE
