Flowserve Chemstar standard - Manual (Page 22)

CHEMSTAR USER INSTRUCTIONS ENGLISH 71569185 02-10
Page 22 of 44 flowserve.com
c) The coupling should be checked for correct
alignment and worn driving elements.
Refer to the manuals of any associated
equipment for periodic checks needed.
6.2.3 Re-lubrication
For general guidelines refer to section 5.2.5,
Lubrication schedule.
Lubricant and bearing temperature analysis can be
useful in optimizing lubricant change intervals.
6.2.4 Mechanical seals
When leakage becomes unacceptable the seal will
need replacement.
6.2.5 Gland packing
The stuffing box split gland can be completely removed
for re-packing or to enable the addition of extra rings of
packing. The stuffing box is normally supplied with a
lantern ring to enable a clean or pressurised flush to the
centre of the packing. If not required, this can be
replaced by an extra 2 rings of packing.
6.2.6 Repeller pump with gland packing
When the pump is stopped there could be leakage
exceeding the acceptable rate. This is due to the
setting of the gland packing and the narrow leak path
created at the shaft to soft packing interface. The
instructions in section 5.8.3 must be followed during
restarting of the pump.
If the pumped liquid can solidify in the repeller
chamber, an external clean liquid injection shall be
provided into the chamber before restarting the
pump. (Refer to optional recirculation in section
4.6.4.3.)
It is possible to flush the packing when the packing
arrangement includes one or more lantern rings.
If the clearance between the shaft and packing is too
large then the packing must be replaced. Special
packing arrangements and assembly processes are
explained in section 6.10.6.
Chemstar repeller pumps fitted with two packing rings
and injectable packing cannot be flushed with
external fluid in the stuffing box.
6.3 Spare parts
6.3.1 Ordering of spares
Flowserve keeps records of all pumps that have been
supplied. When ordering spares the following
information should be quoted:
1) Pump serial number.
2) Pump size.
3) Part name – taken from section 8.
4) Part number – taken from section 8.
5) Number of parts required.
The pump size and serial number are shown on the
pump nameplate.
To ensure continued satisfactory operation,
replacement parts to the original design specification
should be obtained from Flowserve. Any change to
the original design specification (modification or use
of a non-standard part) will invalidate the pump’s
safety certification.
6.3.2 Storage of spares
Spares should be stored in a clean dry area away
from vibration. Inspection and re-treatment of
metallic surfaces (if necessary) with preservative is
recommended at 6 monthly intervals.