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ORIVAL, INC.
• 213 S. Van Brunt St. • Englewood, NJ 07631 • (201) 568-3311
23
SECTION 7 - SCHEDULE OF PREVENTIVE MAINTENANCE AND INSPECTIONS
Following is a schedule of preventive maintenance and inspections based on average
filtration duty, and should be used as a guideline only. For best results, a maintenance
schedule should be compiled based on experience gained from using the filter.
Monthly
- On OR-xx-
B
x models equipped with a built-in bypass valve, the by-pass should
be activated at least once a month. This will clean the valve seat of any
accumulated dirt, as well as ensuring proper by-pass operation.
To manually activate the by-pass valve, follow the procedures below. (Refer to the
drawing on page 24).
Solenoid Valve operated By-Pass Valves (Standard)
-
Rotate the Manual Override slotted screw on the solenoid valve body
attached to the By-Pass Valve. The valve will open. After a few seconds,
rotate the Manual Override Knob back to its original position to close the
By-Pass Valve.
Pilot operated By-Pass Valve (Optional)
- Rotate the three way mini valve, installed in the valve control system, to the
port marked "Open". The valve will open. After a few seconds, rotate the
three way mini valve to its original position, port "Auto", and the valve will
close.
Should system requirements change, or the filter be retrofitted to a different application,
it may be desirable to disable the automatic by-pass (prevent it from opening). To
disable the by-pass follow the procedure below.
- Rotate the three way mini valve to the port marked "Closed". This will by-pass
the differential pilot and disable the valve
.
Quarterly
- Check coarse screen and clean as required.
- Trigger a manual rinse and check for proper filter function by observing the
pressures as described in Section 4.2. This step should be performed for
all individual filters in multiple installations.
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