User Manual for BPS-2000
www.levitronix.com
PL-4021-00, Rev06, DCO# 21-037
42
6.2.2 Instructions for Replacement with PTFE Pump Housing
1.
Power down the pump system and remove the
AC power. Let the motor and pump head cool
down to a workable temperature before the
impeller can be exchanged.
2.
Unscrew the lid of the pump head and remove it
along with the sealing ring.
3.
Remove the impeller
with the
Impeller
Exchange Tool
. Hook the claws of the
Impeller
Exchange Tool
into two opposing vanes of the
impeller.
4.
Inspect the wet area of the pump head
carefully. In case of material damage, also
replace the pump housing.
5.
Place the new impeller into the pump housing
using the
Impeller Exchange Tool
.
6.
If necessary, remove the existing
O-Ring
and
gently press the new
O-Ring
into the lid of the
pump casing.
CAUTION
Use always the specified O-Ring type. If necessary,
consult the Levitronix
®
Technical Service Department.
Do NOT twist or roll the O-Ring and avoid to adding
scratches or particles as this may cause leaking.
7.
Press the lid with the O-ring flush into the
bottom of the pump casing.
CAUTION
Do not use the pump head screws to press the lid into
the pump housing bottom. This might lead to
distortions, which affect the sealing and hydraulic
performance
8.
Carefully tighten the
8
pump housing
screws in
torque increasing sequences as shown below.
Note: These are typical values for the standard pump heads LPP-
2000.7/14. Refer to the relevant pump head specification drawings for
other configurations, which may have different values.
9.
Start up the system and check if the impeller is
rotating properly and the pump head doesn’t
leak.
10.
If the pump head leaks make sure the lid and
the O-Ring are properly pressed into the bottom
of the pump casing. It may be necessary to
change the O-Ring if it has been damaged.
1
2
3
4
5
6
7
8
Tightening Sequence A: 40 Ncm
Tightening Sequence B: 60 Ncm
Tightening Sequence C: 60 Ncm
Tightening Sequence D: 60 Ncm
