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

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07/03
Hy~Line
and
Ultima
Lobe Pumps
6.05 SHAFT SEALS - DOUBLE
MECHANICAL
(See section 6.03 for servicing of primary
(product) seal face.)
Pumps fitted with double seals have
secondary seals in order to retain a flushing
or barrier fluid. To service primary seals see
section 6.03. To service secondary seals it
is necessary to remove the rotor case - see
Section 6.10 - Then proceed as follows:
Note : Not available on LH32 and LH34
pumps.
Removal:
a) Remove static faces from housings. (95)
b) If fitting new O-rings (93) prise them out
of the housing (95).
c) Pull rotary seats (92) off of their shafts.
Take care not to scratch or damage the
smooth faces of the seals. Keep each seal
with its respective shaft to ensure correct
mating of seal faces on re-assembly - you
may wish to label the components at this
stage.
d) If fitting new O-rings (93) prise them out
of their seal face (92). 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) (See section 6.06).
Re-assembly :
a) To re-assemble, place O-ring (93) in
double seal housing (95), lubricate outside
of static seat with a suitable lubricant
compatible with the barrier fluid. Align slots
in seal face with dogs of drive plate (81) in
seal housing (see figure 15) and push seat
fully in. The seat should slide freely against
the plate (81) and wave spring (82).
b) If fitting double seals to a pump for the
first time, e.g. retrofitting a single seal pump,
gently tap or press the support ring (92)
square up against the shoulder on each
shaft.
c) Fit soft washer (92a) in place on support
ring.
d) Fit O-ring (93) to rotary seal seat (92).
Gently push seal seat squarely on to shaft,
aligning hole in rear of seal face with pin on
the support ring.
e) Clean seal faces with soft lint-free tissue
to remove any grease or dust - do not
lubricate. Refit rotor case taking care that
shafts do not damage secondary seal faces.
(See section 6.10)
6.06 SEAL HOUSINGS
It is not normally necessary to remove the
seal housings (89 or 95) from the back of the
rotor case except to check condition of
springs (82) and drive plates (81). If required
to do so, proceed as follows:
Note: Seal housings vary for single (86),
flushed (89) & double seals (95) (See
section 2.10).
Page 28
Figure 17
Double
Mechanical
Seal