Warnings And Safety Notes - Packo AX Instruction Manual

2.3. Warnings and safety notes

The pump may never be used inde-
pendently. It is intended to be
incorporated into machinery.
There must always be piping connected to
the inlet and the outlet.
Pump type
FP4100 – FP4600
FP, NP and IFF 63, 66 and 68
VPC, VDK and AX series
MSP series
FMS, NMS, FP1 and ICP1 series Max 6 bar on the inlet
FPP, IPP
All other pump series
Types 125
Types 160 and 185
Types 200
Types 250
Types 315
The values mentioned above are the maximum
allowed pressures for pump casing and backplate.
The maximum allowed pressure for the complete
pump depends on the type of the mechanical seal. The
values mentioned above are only valid with a sterile
balanced mechanical seal. (seal confi gurations A, B,
C or H). It is advisable to make arrangements that
restrict the pressure on the outlet of the pump.
The maximum allowed speed of the pump is
limited through:
• The maximum pressure in the pipe work (see
above)
• The motor power. When the pump is turning
faster, it needs more power.
• The maximum speed can never be higher than
3600 revolutions per minute
When the motor turns very slowly, its own cool-
ing can be affected. The minimum speed for
pumps with a two-, four- or six-pole motor is
15 Hz and 25 Hz for pumps with a 8-pole motor.
Maximum pressure of
pumps with open impeller
Max 0.7 bar on the inlet
Max 5 bar on the inlet
Max 2 bar on the inlet
Max 2 bar on the inlet
Max 40 bar on the inlet
Max 13 bar on the inlet
Max 10 bar on the inlet
Max 4 bar on the inlet
Max 3 bar on the inlet
sure of the pumped liquid. For more specifi c
details, we advise you to contact PACKO. In
general you can choose the smallest of the fol-
lowing limitative values:
A. Maximum temperature for the rubber
(depending on the liquid): 90°C for perbu-
nan, 125°C for EPDM, 200°C for Viton, FEP
and Kalrez, 110°C for silicone.
B. Pumps with a simple mechanical seal: 15°C
lower than the boiling point of the pumped
liquid at the pressure on the inlet of the
pump. Pumps with a fl ushed seal (quench or
double seal) support a higher temperature if
the sliding surfaces of the mechanical seal
are suffi ciently cooled down.
C. To guarantee good lubrication of the
motor bearings, special motors have to
be used for the handling of liquids with a
temperature higher than 150°C.
The pressure in the pipe work
should not exceed the following
values:
Maximum pressure of
pumps with closed impeller
Max 4 bar on the outlet
Max 10 bar on the outlet
Max 12 bar on the outlet
Max 15 bar on the outlet
Max 8 bar on the outlet
The maximum allowed temperature
of the pumped liquid depends on the
seals in the pump and the vapor pres-
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