JABSCO Hy-Line, Инструкция по установке, эксплуатации, техническому обслуживанию и запасным частям

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07/03
Hy~Line
and
Ultima
Lobe Pumps
the seat is parallel with the back face of the
rotor and must not be tilted. Any “run-out” of
the seat will cause leakage of the seal.
Assembly of the seal is now complete.
Carefully clean all seal faces with a soft lint-
free cloth and to remove all dust and grease.
It may be necessary to use a compatible
solvent to remove oil or grease.
It is not normally necessary to remove the
seal housings (86) from the back of the rotor
case except to check condition of springs
(82) and drive plates (81). If re-fitting seal
housings, align the 3 slots in outer edge of
drive plate with the 3 pins. When fitted,
ensure drive plate can slide freely against
spring pressure. (See section 6.06).
For LH32 and LH34 pumps:
a) Check the coil springs are in place in the
seal housings. Fit the joint ring (83) to the
seal face and lubricate the bore in the seal
housings with a suitable lubricant
compatible with the pumped fluid and
process. Do not use mineral-based
lubricants on EPDM elastomer joints;
silicone grease is suitable.
b) Align one slot in the rear of the static seal
face with the pin in the seal housing and
push the face back firmly against the coils
springs It should be free to 'spring'
backwards and forwards.
c) To fit the seat to the rotor, first fit a new
cup rubber (83) to the seal face. Ensure the
seal face is the correct way round, ie the
smooth working face exposed. Note - the
back (non-working) face of the seal is
identified with a groove or white mark.
d) Lubricate the outside diameter of the cup
rubber with a suitable lubricant (as para.a)
above), and press the face evenly into the
rotor. Use a soft sleeve made from Nylon as
shown in Fig 13b and fit it into the end of the
tool as shown in Fig 13a, or use your fingers
to do this in order to avoid damage to the
seal face. When correctly fitted the seal face
should be 'flush' with the back face of the
rotor and MUST NOT be tilted. Any 'run-out'
of the seal face could cause seal leakage.
The cup rubber SHOULD NOT stand 'proud'
of the back face of the rotor.
6.04 SHAFT SEALS - SINGLE FLUSHED
Pumps fitted with flushed seals have lip
seals fitted in order to retain a flushing or
barrier fluid. To service lip seals it is
necessary to remove the rotor case (51) -
see section 6.04 - Then proceed as follows:
Page 26
A B C
30.9 40.0 6.5
Dimensions in mm
A
B
C
Figure 15 Cup
Rubber
Insertion in
Rotor
Figure 15a - Cup Rubber Dimensions