Packo AX - Warnings and Safety Notes

73
ENG
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.
The pressure in the pipe work
should not exceed the following
values:
Pump type Maximum pressure of
pumps with open impeller
Maximum pressure of
pumps with closed impeller
FP4100 – FP4600 Max 0.7 bar on the inlet
FP, NP and IFF 63, 66 and 68 Max 5 bar on the inlet
VPC, VDK and AX series Max 2 bar on the inlet Max 4 bar on the outlet
MSP series Max 2 bar on the inlet
FMS, NMS, FP1 and ICP1 series Max 6 bar on the inlet
FPP, IPP Max 40 bar on the inlet
All other pump series
Types 125
Types 160 and 185
Types 200
Types 250
Types 315
Max 13 bar on the inlet
Max 10 bar on the inlet
Max 4 bar on the inlet
Max 3 bar on the inlet
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 values mentioned above are the maxi mum
allowed pressures for pump casing and backplate.
The maximum allowed pressure for the complete
pump depends on the type of the mec hanical seal. The
values mentioned above are only valid with a sterile
balanced
mechanical seal. (seal con 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.
The maximum allowed temperature
of the pumped liquid depends on the
seals in the pump and the vapor pres-
sure of the pumped liquid. For more speci 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  ushed seal (quench or
double seal) support a higher temperature if
the sliding surfaces of the mechanical seal
are suf 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.