Lutz Size 1 - 1/4", Руководство по эксплуатации

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9
GB
3.8 Maintenance Model 1 1/2" and 2", Band Clamp Version
3.8.1 Maintenance of Check Valve and O-Ring
. Flush and neutralize the pump to be certain all corrosives or hazardous materials are removed prior to any
maintenance. This procedure should always be followed when returning pumps for factory service also.
a. Non-metallic pumps: Remove the elbow to outer pumping chamber (8) band clamps (35). Suction check valve
seats and check balls (6, 7) are located inside of the bottom of the outer chamber (8). Gently remove and
inspect for excessive wear, pitting or other signs of degradation. Inspect valve seat and manifold o-rings (4).
Replace if necessary. Discharge check valves are located inside of the bottom of the discharge elbows (3).
b. Metallic pumps: To inspect the check valves, remove the nuts (7) from elbow manifold sections (,3) and
screws (9). Repeat procedure as described under point a. There are no manifold o-rings in the metallic
pumps.
3. To inspect the manifold o-rings () remove the manifold band clamps (0) from each manifold assembly.
Inspect and replace o-rings () if necessary. Then reassemble, lightly tighten fasteners. Align the single parts
of the complete pump and tighten the screws in turn with the admissible torque requirement. The check ball
should fit into the curved portion of the valve seat and be facing upward when reinserted into the valve seat
location.
Caution!
When using pumps built with PTFE o-rings always replace with new PTFE o-rings, since the original o-rings
may not reseal the pump.
3.8.2 Maintenance of Diaphragm and Pilot Sleeve Assembly
4. To inspect diaphragms remove the band clamps (6) from the outer pumping chambers (8). If replacement is
necessary due to abrasion or rupture unscrew the outer diaphragm plates (9). Models that are built with PTFE
elastomers will have a PTFE overlay (30) that faces the outer pumping chamber (8) and a back-up diaphragm
(3) on the air side of pump. When changing diaphragms it is recommended to replace always both. Pumps
without PTFE will contain only the back-up diaphragms (3).
5. If a diaphragm has been ruptured and corrosive or viscous fluid has entered the air side of the pump, the
complete air system should be inspected. After removing diaphragms and inner diaphragm plate (33), and flat
washer (47) the pilot sleeve assembly (3, 4, 5, 4, 45, 48) and diaphragm rod assembly (34.49, 49) may be
removed by removing the retaining plates (49) (you may only need to remove one retaining plate) and pushing
the entire unit out through the bore in the intermediate (4). The diaphragm rod assembly must be unscrewed
to remove the pilot sleeve (3).
Caution!
To aid in reassembly use a non-synthetic, petroleum based lubricating grease without EP additives.
Maintenance Model 1 1/2" and 2", Band Clamp Version