HWMA2 USER INSTRUCTIONS ENGLISH - 06/16
Page 30 of 39
duration of service, all roller bearings should be
renewed, too.
6.9 Assembly
To assemble the pump consult the sectional
drawings.
Ensure threads, gasket and O-ring mating faces are
clean. Apply thread sealant to non-face sealing pipe
thread fittings.
6.9.1 Assembly of the hydraulic cartridge
1) Mount the mechanical seal to the casing cover
[1221]. Tight hex nuts [6581.4] of studs [6572.4].
Insert O-ring [4610.4] into
casing cover [1221].
2) Insert the O-ring [4610.3] into the liner [1649] and
slip it on to the shaft.
3) Put in the key [6700.1] and slip on the 2
nd
stage
impeller [2200]. Now put on the interstage plate
[1471] including the bushing [3300}.
If applicable, secure the
bushing [3300] with the set screw.
Insert O-rings
[4610.2,4610.5] into the interstage plate [1471].
Tight the socket head cap screws [6579.1] to fix
the assembly.
4) Slip on the bearing sleeve [3400] and the first
stage impeller [2200] and the lockwasher
[6541.1].Tight the assembly with the impeller nut
[2912] and secure it with the lockwasher [6541.1].
If the pump is equipped with an
inducer [2215], it replaces the shaft nut.
5) Now the complete motor hydraulic assembly can
be put into the casing. Tight hex nuts [6581.2] of
the studs [6572.2].
Take care of pin [6811] to
ensure correct position of the motor hydraulic
assembly in the casing.
6.9.2 Assembly of the bearing housing
1) Push radial ball bearing [3011] to the shaft
[2100].
Heat up the bearing with an
applicable device to 110°C.
2) Mount the pair of thrust ball bearing [3013] to the
bearing adaptor sleeve [2471] by turning the
bearing lock nut [3712].
Install the lockwasher
[6541.2].
3) Install the oil ring [3861] and secure it with the
grub screw [6814.3].
4) Put in key [6700.3] and slip the thrust bearing
assembly to the shaft [2100].
5) Put in the key [6700.2] and mount the pumping
ring [4223] at the line bearing side.
Take care of the O-ring
[4610.7].
6) Now you can push the shaft assembly into the
bearing housing [3200].
7) Mount the distance sleeve [2460] and the
deflector [2540]. Secure the deflector with the
grub screw [6814.2].
If grease catcher [3865] have been
disassembled, it must be installed before
mounting the deflector [2540]. Take care of the
O-ring [4610.6].
8) Put on the cover [3260] and [1220] and tight the
hexagon head bolt [6577.4].
Take care of the O-rings
[472] and the labyrinth ring [4330].
9) Install stuffing box housing [4110].
10) Mount shaft nut [2910] and set rotor clearance
according to chapter
5.3.1 Adjusting of the rotor
.
6.9.3 Assembly of shaft seal
1) Replacing the mechanical seal extreme cleanness
is recommended. The sealing faces of the
mechanical seal must be free of scratches or other
damages and must be cleaned once again before
assembly.
2) Before sliding the rotating parts on the shaft
respectively on the shaft sleeve, the fits must be
sufficiently lubricated with a molykote paste.
Take care that the sealing faces
remain clean and no grease touches them.
3) If a mechanical seal with pump ring for medium
circulation is used pay attention to the rotation of
pump and pump ring.
4) At assembling the seal end plate [4212] pay
attention to the position of piping connections for
injection or quench (refer to shaft seal drawing).
5) For assembly of shaft seal use the reverse
procedure as described in the chapter
„Disassembly of shaft seal“ before. Important is
the fixing of the mechanical seal by the tools. So
a damage of the mechanical seal during further
assembling can be avoided.
Before start up the tools must
absolute turned out of the groove of the shaft
