HAMMELMANN B7.02502.0210, Operating Instructions Manual

Page: 263 / 311

Starp-up and shut-down Page 3 of 3 Chapter 6
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(Sterling Fluid Systems) 2001
- shaft seal
Executions with stuffing box:
For correct operation of the shaft seal a slight
leakage (20 - 40 drops per minute) is essential. If
the leakage is reduced too much by retightening
the packing, it will be destroyed.
If the pump is equipped with code 052 or code
051, the supply lines to the stuffing box have to be
open before the pump is started.
Executions with mechanical seal:
During running-in slight leakage may occur. If the
pump is equipped with an external flush, quench
or heating, the flush, quench or heating supply
has to be switched on before the pump is started.
The mechanical seal must be allowed to cool
before the next re-start.
ATTENTION
For executions with stuffing box: If the leakage
increases considerably and cannot be adjusted by
retightening the gland, the packing is worn and
must be replaced by a new one.
For executions with mechanical seal: If the initial
leakage does not disappear within 5 minutes of
operation, stop the pump, dismantle the seal and
check for damage of the seal faces and auxiliary
sealing.
6.9 Shutting-down
Before shutting down close the valve on the
discharge side.
After shutting down, all valves may be closed. The
valves of the auxiliary pipework connections,
(quench, heating, external flush, code 052, code
051), have to be closed in the last place.
If there is a risk of very low ambient temperatures,
remove the pump and then drain it using the
threaded plug 90.30.
When handling explosive, toxic, hot, crystalline or
corrosive media, ensure that people and the
environment are not endangered. Even if the
pump has been drained using the threaded plug
90.30, residues can remain in the pump. For
transport, the pump must be free from any
dangerous material. In case of extended periods
out of service, protect the pump against corrosion.
HAMMELMANN Code no.: 04.03226.0769
Type 32-200