Flowserve ESP2 - Manual (Page 44)

ESP2 USER INSTRUCTIONS ENGLISH PCN-(71569292) 4-12
Page 44 of 64
• For Group 3 pumps: Push the shaft towards
the mounting plate until the threads are lined
up with the top of the column. Insert the
stuffing box (4100) from the side and bolt to
the column. If a mechanical seal is being
used, push the shaft up from the adapter
(1340.1) side while pushing the seal (4200)
and gland (4120.2) onto the Teflon taped
threaded end of the shaft from within the
bearing bracket. If packing (4130) is being
used, push the shaft up from the adapter
(1340.1) end while pushing the gland
(4120.1) onto the Teflon taped threaded end
of the shaft. Leave the gland (4120.2) and
mechanical seal, if furnished, loose on the
shaft for now. DO NOT SET SEAL AT THIS
TIME. See section 6.9.6 “Packing" or section
6.9.7 "Mechanical Seal" for the next steps.
6.9.5 Packing
a)
If the pump is furnished with packing, put one
ring in at a time.
b) Two rings should be inserted and then the seal
cage (4134) and then the succeeding rings of
packing until the box is filled.
The joints of succeeding packing rings
must be staggered and the seal cage must line up
with the passage leading into the stuffing box for
proper lubrication.
c)
Now slide the gland (4120.1) over the shaft and
draw up the nuts finger tight, then tighten nuts
an extra 1/4 turn.
d) Reattach the thrust bearing assembly (3031,
3712).
e) Reattach the thrust bearing holder (3110).
f) Reattach the support head (3160).
6.9.5 Mechanical Seal
Cover the shaft threads with a Teflon
tape to prevent them from causing internal damage to
the seal.
a)
See section 5.1.2.1 for seal installation
directions.
b) Connect the thrust bearing assembly (3031,
3712).
c) Reattach the thrust bearing holder (3110).
d) Reattach the support head (3160).
6.9.5 Casing and discharge piping
a)
Place a new gasket (4590.1) on the gasket face
of the adapter (1340.1) where the adapter and
casing (1100) will line up.
b) Bolt the pump casing to the adapter
c) If the strainer (6531) had been removed for
cleaning or replacement purposes, reattach
strainer to suction flange of the casing.
d) Reconnect all bearing lubrication lines (3840.1).
e) For Groups 1, 2, and 6x4x13: At this point the
lower locknut (3712) should be screwed all the
way down the threads on the upper end of the
discharge pipe (1360). The discharge elbow
(1371) should be screwed onto the lower end of
the discharge pipe (if not already). Check to see
if the companion flange (1245.1) is still
connected to the discharge elbow. Next, the
discharge pipe should be slid up through the
mounting plate (6110) until the companion
flange lines up with the discharge flange of the
casing (1100).
To ensure a proper seal at the casing
discharge flange, it is important that the companion
flange is connected to the casing before the upper
locknuts are tightened to against the mounting plate.
f)
Replace the gasket (4590.2) between the
companion flange and the discharge flange of
the casing and bolt back together.
g) The upper lock-nut can now be screwed onto
the threads at the upper end of the discharge
pipe and both locknuts can be tightened against
the mounting plate.
h) For Group 3 (excluding 6x4x13): The
discharge pipe is attached the same way to the
casing discharge flange (see step “f” above).
The only difference in the assembly is that the
Group 3 pipes have a flange (1245.3) welded to
the discharge pipe (1360) that bolts to the
underside of the mounting plate (6110).
i) Set the impeller clearance per Section 5.3.
j) See Section 4 and Section 5 for installation and
startup instructions.