The Pipe Work Installation - Packo AX Instruction Manual

Connect according to the coupling information on
the identification plate and the diagram in the ter-
minal box. Do not connect the motor if you do not
understand the wiring diagram. Please contact
PACKO in that case. Never check the direction
of rotation of the pump with an opened terminal
box of the motor. The installer is responsible
for following the rules on electrical compatibility

4.5. The pipe work installation

The inlet and outlet of the pump are closed with
plastic plugs for packaging. Remove those plugs
before connecting the pump to the pipe work.
The pipe work should be made frost-proof. Clean
the pipe work before connecting to the pump so
that no foreign particle can come into the pump
during starting up. The pipe work must be carried
out according to good manufacturing practice
and connected to the pump without mechanical
forces. The suction and discharge pipe must
applicable in the country where the pump will
be used.
Comply with the voltage and frequency indicated
on the nameplate. (Do not deviate by more than
5 % from the voltage indicated or by more than
1 % from the frequency.)
For pumps with a motor power of more than
75 kW, special starting provisions must be taken
(star-delta starter, soft starter or starting with
frequency converter).
As an option, motors with built-in PTC thermal
protection are available. When the motor senses
danger of heat, the resistance of this PTC (which
comes out in the terminal box of the motor with
two threads) increases strongly. The PTC has
to be connected to a PTC relay or frequency
converter that switches off the motor when the
motor becomes too hot.
The installation of a thermal protective
device is always required.
be supported so that their weight must not be
borne by the pump. Provisions for the expansion
and contraction of the pipes due to warming up
and cooling down must be taken (e.g. placing
compensators).
The maximum allowable shear load on the
pump connections is the pipe dimension of the
connection in mm multiplied by 8 Newtons. The
maximum allowable bending moment is the pipe
dimension of the connection in mm multiplied by
1Nm. For the series FP, NP, CRP and IRP 63,
66 and 68 the values mentioned above must
be halved.
In the suction pipe a full bore valve must be
installed, in the discharge pipe a regulating valve
should be installed to make it possible to turn off
the system completely when the pump must be
removed for maintenance or repair. Also provide
a drain valve on the inlet of the pump. Earth the
pipe work according to the local directives.
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