Electrical Connection - Pentair PVM 1 Instructions

EN
ORIGINAL INSTRUCTION
6.4 INSTALLATION EXAMPLE
When positioning and installing the pump, follow the installation examples below in order to avoid damaging the pump.
1.
Pipe support: Support piping
system properly to avoid stresses
on connections.
2.
On-off valves: Install on-off
valves for easy access- before the
pump intake and after the pump
discharge.
3.
Use flexible piping on both inlet
and outlet sides of the pump to
reduce vibration and transmission
of noise.
4.
Check valves will prevent return
flow of pumped liquid when pump
is stopped, reducing the danger of
pump damage.
5.
Control Panel: Use high quality
components. Make sure that the
CHAPTER 7

ELECTRICAL CONNECTION

DANGER - ELECTRIC SHOCK RISK
Warning of electrical voltage
• All electrical connection should be in
accordance with the local regulations
and made by a qualified electrician
• Make sure that the supply voltages and
frequencies, and phase are suitable for
the motor used
• Conductors and cables shall be
selected so as to be suitable for the
operating conditions according to
appropriate legal standards
• The motor-driven pump must be
powered by dedicated electrical panel
that includes a switch, fuse and circuit
breaker calibrated to the motordriven
pump' s absorbed current
GROUNDING SYMBOL
The grounding symbol identifies any terminal which is intended for connection to an external conductor for protection
against electrical shock in case of a fault.
Connect the ground lead to the product in accordance with local standards.
Make sure that the ground lead is longer than the phase leads.
10
panel conforms to local standards
and regulations.
6.
Do not place elbows next to the
pump inlet and discharge.
7.
If pump needs to be operated
with on-off valve closed, install a
by-pass line to avoid damaging the
pumping system.
8.
If it is necessary to increase the
diameter of the suction pipe,
place an eccentric reducer
between the check valve and the
flexible pipe section.
9.
Using elbows will increase the flow
resistance. Long radius bends will
result in less flow resistance.
• In case of control panel missing it is
recommended to use a circuit breaker
as main breaker that is suitable for
isolation according to appropriate
legal standard and is equipped with
an operating handle which is lockable
in OFF position and complies with the
other requirements of appropriate
legal standards
• Before proceeding, make sure that all
the connections are grounded and well
insulated
• Overload protection should be
provided
10. The piping must have a level or
positive gradient to prevent the
formation of air pockets.
11.
The diameter of the drop pipe
must be bigger than the diameter
of the pump' s suction port.
12.
Use a foot valve in case of
negative suction head.
13.
Size pump for correct head.
14.
Place the intake of the suction
pipe so that the footvalve is always
submerged to prevent entry of air.
15.
Install a compound gauge at the
pump suction and a pressure
gauge at the pump discharge.
• To connect, proceed as shown on the
inside of the terminal board cover
• The terminal box can be turned to four
positions
• Check the direction of rotation (Three-
phase motor only)
• Make sure that the controls are
properly grounded
• To avoid the possibility of dry running,
we strongly recommend installing dry
running protection