Vilter VSM 71-701, Руководство по эксплуатации и обслуживанию

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ASSEMBLY
4. Place tapered installation sleeve on shaft, refer to Figure
11. Sleeve is furnished with GG, AS, AK and AL
replacement mechanical seals. Coat rotor shaft, tapered
installation sleeve and inner diameter of mechanical seal
rotary member with a generous amount of non-detergent
SAE 30 weight oil. Petrolatum may be used but grease is
not recommended.
5. Place seal spring on shaft against rotor hub. Refer to
Figure 12.
6. Slide rotary member, lapped contact surface facing away
from spring, over installation sleeve on shaft until just
contacting the spring. Do not compress spring. Remove
installation sleeve.
7. Coat rotor shaft with non-detergent SAE 30 weight oil.
Install shaft slowly pushing until the ends of rotor teeth
are just below the face of the casing.
8. Leave the rotor in this position. Withdrawal of rotor and
shaft may displace the carbon seal rotating face and
result in damage to the seal.
9. Place O-ring gasket on head and install head and idler
assembly on pump. Pump head and casing were marked
before disassembly to insure proper reassembly. If not,
be sure idler pin, which is offset in pump head, is
positioned up and equal distance between port
connections to allow for proper flow of liquid through
pump.
10. Tighten head capscrews evenly.
11. If pump was equipped with a relief valve and was
removed during disassembly, install on head with new
gaskets. Relief valve adjusting screw cap must always
point towards suction port. Refer to Figure 5 page 2. For
relief valve repair or adjustments, see PRESSURE
RELIEF VALVE INSTRUCTIONS, Page 7.
SHAFT
MECHANICAL SEAL
(ROTARY MEMBER)
SPRING
ROTOR HUB
FIGURE 12
FIGURE 11
COAT WITH LIGHT OIL BEFORE ASSEMBLY
TAPERED SLEEVE
MECHANICAL SEAL (ROTARY MEMBER)
SPRING
Assembly Notes On Standard Mechanical Seal
(Synthetic Rubber Bellows Type)
READ CAREFULLY BEFORE REASSEMBLING PUMP
The seal used in this pump is simple to install and good
performance will result if care is taken during installation.
The principle of mechanical seal is contact between the
rotary and stationary members. These parts are lapped to
a high finish and their sealing effectiveness depends on
complete contact.
Prior to installing rotary portion of mechanical seal, prepare
and organize rotor shaft, head and idler assemblies and
appropriate gaskets for quick assembly.
Once rotary portion of mechanical seal is installed on rotor
shaft, it is necessary to assemble parts as quickly as
possible to insure the seal does not stick to shaft in wrong
axial position. The seat will stick to the shaft after several
minutes setting time.
Never touch sealing faces with anything except clean
hands or clean cloth. Minute particles can scratch the seal
faces and cause leakage.
1. Coat idler pin with non-detergent SAE 30 weight
oil and place idler and bushing on idler pin in
head. If replacing a carbon graphite bushing, refer
to Installation of Carbon Graphite Bushings, page
7.
2. Clean rotor hub and casing seal housing bore.
Make sure both are free from dirt and grit. Coat
outer diameter of seal seat and inner diameter of
seal housing bore with non-detergent SAE 30
weight oil.
3. Start seal seat in seal housing bore. If force is
necessary protect seal face with a clean
cardboard disc and gently tap i1 in place with a
piece of wood. Be sure seal seat is completely
seated in the bore.
The casing should be examined for wear, particularly in the
area between ports. All parts should be checked for wear
before pump is put together.
When making major repairs, such as replacing a rotor and
shaft; it is advisable to also install a new mechanical seal,
head and idler pin, idler and bushing. See "Installation of
Carbon Graphite Bushings" page 7.
Clean all parts thoroughly and examine for wear or
damage. Check lip seals, ball bearings, bushing and idler
pin and replace if necessary. Check all other parts for
nicks, burrs, excessive wear and replace if necessary.
Wash bearings in clean solvent. Blow out bearings with
compressed air. Do not allow bearings to spin; turn them
slowly by hand. Spinning bearings will damage race and
balls. Make sure bearings are clean, then lubricate with
non-detergent SAE 30 weight oil and check for roughness.
Roughness can be determined by turning outer race by
hand. Replace bearings if bearings have roughness.
Be sure shaft is free from nicks, burrs and foreign particles
that might damage mechanical seal. Scratches on shaft in
seal area will provide leakage paths under mechanical
seal. Use fine emery cloth to remove scratches or sharp
edges.
PAGE 6 OF 9 ISSUE B
SECTION TSM 144