Flowserve QLQ Vertical Worthington - Manual (Page 50)

QLQ, QLQC USER INSTRUCTIONS ENGLISH 87900027 – 06/14
Page 50 of 61
7. New packing has to be run-in. It is good practice to
start the pump with the stuffing box gland quite
loose. After the pump has been running for
approximately 10 to 15 minutes, gradually tighten
the stuffing box gland until leakage is reduced to a
constant drip. Package that is too tight in the box
will cause undue friction, creating heat which will
glaze the packing and possibly score the shaft
sleeves. Packing must remain soft and pliable.
It may be impossible to add the last
ring of packing in the stuffing box and still insert the
gland. When this occasion arises, omit the last ring of
packing and tighten the gland. Continue to tighten the
gland at periodic intervals (daily), allowing for proper
leakage, until the packing has seated itself well
enough to allow the final ring to be inserted.
Should the new packing cause
excessive heating during "run-in", flush the shaft and
packing box area with cold water or shut the pump
down and allow to cool.
For all repair instructions please call
Flowserve representative or customer service with
the order no. and unit details for specific repair
instruction literature.
All repair work to be carried out by trained and
authorized personnel only. Flowserve’s written
permission may be required for any
disassembly/repair of the pump that is still under
warranty.
To ensure continued satisfactory operation,
replacement parts to the original design specification
should be obtained from Flowserve.
6.8.7.2 Maintenance of mechanical seals (when
installed)

Refer to the seal manufacturer manual for
specific instructions.
6.8.8 Maintenance of driver

Refer to the driver manufacturer manual for
specific instructions.
6.8.9 Maintenance of coupling and gearbox

Refer to the coupling or gear manufacturer
manual for specific instructions.
6.8.10 Maintenance of flushing systems,
accessories and instruments ( if provided)

Refer to the specific manufacturer manual for
instructions.
6.9 Reassemble procedure
To assemble the pump, reverse the dismantling
procedure previously described.
Refer to the dedicated cross sectional drawing to
identify the different parts.
The pump that has been purchased may
have order specific assembly and parts
configurations. Refer to the dedicated documentation
or to Flowserve personnel for information.
It is recommended to call for trained Flowserve
technicians for all your assembly needs.

Refer to seal manufacturer’s instructions for
disassembly and re-assembly of mechanical seals.
Please take precaution during
assembly process such that there is no risk of
explosion due to the nature of the
materials/tools/equipment/methods used. Wherever
chemicals and hazardous materials are involved,
proper safety rules must be followed to prevent any
dangers to human lives or livestock. Refer to
applicable local regulatory agency requirements for
specific safety information.
If headroom permits, it is recommended that the
pump be assembled in a horizontal position and be
lowered as one complete unit into the foundation
opening.
6.9.1 Casing assembly
a) Install key and impeller on pump shaft.
b) Install impeller locking nut.
c) If pump casing is split in two parts , assembly the
upper part of the casing and the upper suction
bell.
d) Install rotor into casing.
e) Install lower suction case.
6.9.2 Shafting and columns
a) Slide coupling on column shaft, displacing it far
enough to permit insertion of the key and the slit
collars.
b) Bring column shaft end in contact with lower shaft
end face and align them provisionally.
c) Install the key and the split collars.