REV03026720010220
20
Maintenance
The system should be visually inspected and tested a minimum of every six (6) months according to the
procedure below during light duty cycles. Monthly inspections are recommended for systems that are being used
in excess of an average of eight (8) hours a day and five (5) days a week.
Preventative Maintenance
Prior to performing the maintenance procedure ensure that:
1.
The electrical sub-panel mounted main disconnect switch is operating properly.
2.
The user supplied remote circuit breaker is in the “OFF” position.
3.
All sources of power are isolated from the unit.
Note: Proceed only after this has been verified and properly tagged.
4.
Drain visible water and sediment from the primary filter (see Servicing Primary Filter/Water Separator).
5.
Check system and all parts for corrosion and rust.
6.
Check mounting hardware – tighten as necessary.
7.
Check bolts on the pump/motor hardware for tightness, as pump/motor hardware can loosen after normal
operation for extended durations of time, due to vibration.
8.
The hardware uses lock nuts – check all bolts for secure nuts.
9.
Check all electrical terminals and connections for tightness.
10.
All motors are permanently lubricated and do not require any lubrication.
11.
Check all plumbing joints for leaks, tighten fittings and joints as necessary, and remove accumulated fuel in leak-
basin as necessary.
12.
Inspect all filter(s) and separator(s).
Note: All filter elements should be replaced at least every six (6) months.
Servicing the Primary Filter/Water Separator
Clogged primary filter elements restrict the flow of fuel, resulting in the system’s vacuum gauge indicating a pressure drop.
The gauge reads the condition between the Primary Filter and the pump. At a pressure drop of 16” HG, the pump will
automatically shut off and activate an alarm. This signal indicates that it is time to either back flush or change the filter
element.
Servicing of Water Separator:
1.
Turn the enclosure door panel selector switch to the “OFF” position – making sure the pump will not turn on.
2.
Close the inlet and outlet ball valves.
3.
Open the bleed screw at the top of the Water Separator.
4.
Place a fuel waste container below the yellow safety drain valve on the bottom of the filter bowl (unless system is
equipped with the Automatic Water Drain option – OPT-AWD).
5.
Open the yellow safety drain valve (push & turn counterclockwise).
6.
Close after approximately 2 seconds.
7.
After approximately 10 seconds, reopen the drain valve, allowing water to settle out of the fuel.
8.
Close after visible sediment, particles, and water have been drained from the vessel.
9.
Open the inlet and outlet ball valves on the system.
10.
Press the Alarm Reset button on the enclosure door panel to acknowledge the alarm and reset it, if needed.
11.
Return the selector switch to its original position and check for leaks when re-starting and pressurizing the
system.
Summary of Contents for STS 6020
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