Operating Instruction
Single-Acting Mechanical Seal
Dokument
document
Blatt
sheet
Ausgabe
issue
OM.SEA.02e
1 (2)
A / 10.02.95
1.
General
•
Please take the appertaining drawing from
respective pump data sheet.
•
The mechanical seal is suitable for the operating
conditions indicated in the pump data sheet.
Modifications are only admissible after the customer
has consulted with seepex. Additionally, attention
must be paid to the manufacturer’s operating
manual.
2.
Safety
Any mode of operation impairing the operating safety
of the mechanical seal has to be avoided.
The operator is advised to consider the possible
effects on the environment which could be caused by
a defective mechanical seal and what additional
measures must be taken to protect the environment
and the public.
The pump must be mounted and operated in such
a way that operation with a defective mechanical seal
will not result in injury or harm to the public and that
any leakage can be safely and properly dealt with.
Mechanical seals are often used to seal hazardous
material (chemicals, drugs, etc.). It is essential that
rules pertaining to the handling of hazardous materials
are adhered to.
Modifications effected by the customer himself and
changes influencing the safety of the mechanical seal
are not allowed.
3.
Emissions
A mechanical seal is a dynamic seal and leakage is
unavoidable.
ATTENTION
Components that may contact leakage must be
resistant to corrosion or be protected accordingly.
Mechanical seal leakage must be drained in a safe
and proper manner.
4.
Flushing or circulation of single-acting mechanical
seals
Single-acting mechanical seals contacting the con-
veying liquid require no additional flushing or a
circulation pipe because sufficient flushing and heat
exchange occurs around the seal due to the conveying
liquid.
However, in particular cases, a direct flushing pipe can
be installed into the flushing connection on the
mechanical seal housing.
5.
Commissioning
Regardless of the pump's operating status, the con-
veying medium to be sealed must always be in liquid
form at the mechanical seal. This particularly applies
to the pump's commissioning and its placing out of
service.
6.
Maintenance
When operating the pump according to the instruc-
tions, no maintenance is required.
7.
Disassembly / Reassembly
7.1
Disassembly
- Remove flushing connections at shaft seal housing
(SAE).
- Lift / displace splash ring (310) and eject plug-in
shaft pin (309) horizontally.
- Withdraw rotating unit (RTE) together with shaft seal
parallel from output shaft of drive and avoid
chocking.
- Clean plug-in shaft (307) and remove burrs etc.,
which may damage sealing elements. Moisten plug-
in shaft (307) with slip additive (diluted fluid soap).
- Loosen axial safety device of mechanical seal (330
or 372) and withdraw mechanical seal (330) from
plug-in shaft (307).
- Remove mechanical seal housing (333) from lantern
(200).
- Press counter-ring of mechanical seal with o-ring out
of mechanical seal housing (333).
