Electrical Connection - Pentair EASYBOOST PMS20 PVM 3-5 Instruction Manual

ENGLISH
In the case where there would not be any pumping in close
proximity from the group, on the discharge line, the installa-
tion of a test faucet is recommended.
It is necessary to control from time to time the pre-replen-
ishment pressure of membrane vessel that must be 0.2÷0.3
bar lower than the minimum closing pressure of the pressure
switch calibrated lower.
This control must be done without pressure in the installation
or with the tanks disassembled.
PRIMING OF THE GROUP
Refers to Fig. 1
Always shut off the voltage before proceeding to any
operation.
ATTENTION! The group needs to be filled up before putting it
in operation.
In case of aspiration with positive suction head, open storage,
aqueduct or water pipe under pressure, prime the group as
follows:
∙ open all valves and remove the priming plugs on the aspi-
ration collector and on the pumps;
∙ open the water supply on-off valve until the evacuation of
the liquid;
∙ close again the feed faucet and the pumping plugs.
In the case where the group supply is with lower suction head,
underground well or tank, prime the group as follows:
∙ open all valves and to and remove the priming plugs on the
aspiration collector and on the pumps;
∙ fill with water through the suction pipe;
∙ make the necessary topping-up through the priming plugs
on the pump casing until complete filling-up
∙ re-assemble the plugs.
Pressure switch 1
Pressure switch 2
Run dry protection
Cut the electric bridges and
connect them to the control
device selected
Fig. 2
16

ELECTRICAL CONNECTION

The panel must be powered by a differential device
with on/off power under 30 mA.
Check that the power supply is provided with an effi-
cient ground installation in accordance with the cur-
rent regulations.
ATTENTION! The single-phase panel does not have a master
switch.
ATTENTION! Check that the voltage and frequency indicated
on the nameplate correspond to those of the available power
grid.
ATTENTION! The power supply is equipped with differential
circuit breaker with the sensitivity required by the regulations
in force for this type of equipment.
ATTENTION! Before connecting the power supply cable to the
control board, check that it has sufficient dimensions to sup-
port the maximum voltage required by group pumps.
ATTENTION! The connection of the distribution boards to the
power grid must be done according to indications reported on
the electric connection scheme situated in the control board.
Our units are delivered with "LIV" jump terminals (L1-L2 for
the single-phase, Fig.1; 5-6 for the three-phases, Fig.2).
ATTENTION! In this case the unit is not protected against dry
operation. It is therefore necessary to remove the electric
bridges and connect them to the control device selected.
Float switch
The float must be installed in the tank and connected thanks
to two wires to the special terminals on the control board.
Inverted minimal pressure sensor
In the case where the group is fed by a water duct under pres-
sure (for example municipal water system), it is necessary to
install a minimal pressure sensor which prevents from the
working of the group if the pressure in the duct descends be-
low the preset value.
Fig. 3