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

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35
GB
3.10 Maintenance Model 3", Bolted Version
3.10.1 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 main-
tenance. This procedure should always be followed when returning pumps for factory service also.
. Remove the suction and discharge manifolds fasteners (8). The check valve seats (6) and check balls (7) are
located inside the bottom of the outer chamber (8) or inside the discharge manifold (). Remove the seat and
balls and inspect for excessive wear, pitting, or other signs of degradation. On models using nylon check valve
seats (5) and o-rings (4), check the seats, balls, for excessive wear, pitting, or other signs of degradation.
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.
3.10.2 Maintenance of Diaphragm and Pilot Sleeve Assembly
3. To inspect the diaphragms, remove the eight fasteners (33) from the outer chamber. If replacement is necessary
due to abrasion or rupture, remove the outer diaphragm plates (5) by turning counter-clockwise. 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. Pumps without PTFE will contain only the back-up diaphragms
(3).
4. If diaphragm replacement is required, remove the inner diaphragm plate by removing fasteners (56, 55).
5. If a diaphragm has been ruptured and corrosive or viscous fluid has entered the air side of the pump, the com-
plete air system should be inspected.
6. After removing the diaphragm-plate assemblies, bumpers (3), & flat washers (47) the pilot sleeve assembly (3,
4, 5, 4, 45 & 48) and diaphragm rod assembly (34, 49) may be removed after removing the retaining plate
(46) fasteners (38) 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 apply a non-synthetic petroleum based lubricating grease without EP additives on all the
o-rings and the intermediate bore.
7. Clean or replace any components that have excessive wear, dirt build-up, or chemical attack. Lube all compo-
nents prior to reassembling. Reassemble pilot sleeve spacers (45), o-rings (4) and lip seals (4) within bore
of intermediate. Make sure that the open side of the lip seals (4) is facing outward toward the diaphragms.
Also make sure that the end pilot spacers (45) are at the end on either side of the pilot sleeve assembly and all
inner spacers (48) are separated by o-rings (4). Next carefully insert the diaphragm rod assembly (34,49) with
pilot sleeve (3) inside the assembly in the bore. Reattach retaining plates (46). Do not over tighten self-tapping
screws (38).
Caution!
To aid in reassembly of the diaphragms apply a non-synthetic petroleum based lubricating grease without EP
additives to the diaphragm`s outside diameter sealing bead.
8. Reassemble the diaphragms (3) by placing the “liquid side” on the outer diaphragm plate (5), place the in-
ner diaphragm plate on the opposite side of the diaphragm, insert fasteners (56) with washers (55) and tighten
fasteners to 7.0 Nm of torque.
Maintenance Model 3", Bolted Version