Orival OR-02-PE, Руководство по эксплуатации и обслуживанию

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ORIVAL, INC. • 213 S. Van Brunt St. • Englewood, NJ 07631 • (201) 568-3311
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9. If the solenoid valve is draining, but the rinse valve(s) do not open, then remove the
tubing from the top portion of any rinse valve or from the piston and observe
whether the valve(s) open. If the valve(s) open, check for blockages in the tubing
or fittings connecting the manifold and the rinse valves.
10. If the valves still do not open, remove the tubing from the bottom portion of the
rinse valves and check for flow from this tube. If there is low flow or pressure,
check for blockages in the tubing and manifold. If flow is present at line
pressure, shut down the filter, remove rinse valve actuators and check for
blockages, which may prevent valves from opening. Replace as necessary and
recheck operation.
11. If the filter rinses, open the outlet valve and recheck the differential. If the
differential has recovered, the filter was probably blocked due to an influx of dirt.
Allow the differential to buildup and monitor for proper filter operation.
12. If the differential has not recovered, check to ensure that the inlet pressure during
the rinse cycle is greater than the minimum required (see Section 3.2 A). If not,
the pressure must be greater. Contact your Orival representative for assistance.
13. Check the inlet pressure versus the hydraulic motor chamber pressure for sufficient
pressure drop as indicated in Section 4.2. If not sufficient, check for restrictions
or sources of back pressure in the rinse valve drain lines.
14. If the pressure drop is sufficient and the differential is not recovering after several
additional manual rinse cycles with the outlet valve closed, the filter must be shut
down and the screen extracted and cleaned manually. Check the dirt collector
nozzles for damage or excessive wear against the heights indicated in Table 9.1
below. Note that nozzle heights for PVC dirt collectors are measured from the
surface of the dirt collector tube, whereas those for Stainless Steel dirt collectors
are measured from the face of the coupling.
TABLE 9.1 DIRT COLLECTOR NOZZLE HEIGHTS FOR PISTON MODELS
FILTERS COLLECTOR HEIGHT
OR-03-xE PVC 2.8
Stainless Steel 2.6
OR-04-xE, OR-06-xE, OR-08-xS PVC 2.4
Stainless Steel 2.3
OR-08-PE
Stainless Steel
2.3
OR-10-xS, OR-10-PE, OR-12-xS Stainless Steel 3.1
OR-14-xS, OR-16-PS, OR-18-PS, OR-20-PS
Stainless Steel
3.7