Electrical Connection - Sanremo F18 Livret D'instructions

F18
hot water vessel is defective the pump may come
in contact with hot water(90-100°C). Dimensional
variations of components will cause seizure of the
pump.
6) Wrong connections
Pumps connectors are 3/8"NPT(conical) or 3/8"
GAS(cylindrical).Connectors with thread different
from the recommended type are occasionally
used. Sealing is made with a glue or with teflon
tape. If the connector is forced it is possible to
create beards; if excess sealing glue is used the
extra quantity of glue may enter into the pump
body.
In both cases it is likely to create a damage.
7) Pressure strokes
To avoid pressure strokes opening of solenoid
valves installed downstream must happen before
the start of the pump. For the same reason closing
of the valve must be delayed after stopping of the
pump.
A pressure stroke may break graphite parts and
damage mechanical seal causing blockage of the
pump and leaks.
8) Handling
EN
A crash on the floor may create deformations that
will jeopardize the tight mechanical tolerances of
the pump components. For the same reason be
very careful when clamping the pump to mount or
demount connectors.
9) Scale build up
Scale deposits will quickly show on inner
components when using hard water, not
sweetened with ion exchange resins. Scale
formation increases when the pressure relief
valve is used as flow rate regulator: the rate of
scale deposition increases with increasing of
closed loop circulation. Scale deposits cause an
increase of torque, occasional seizure of the pump
or a reduction of operating pressure because the
pressure relief valve cannot work properly.
To minimize this problem SANREMO suggest to
use pumps with flow rate matching the hydraulic
circuit features.
In some circuits it is advisable to periodically
remove scale with a chemical treatment.
Connections

7.3 ELECTRICAL CONNECTION

- Make sure all switches are in the
OFF position before proceeding
with electrical connection of the
machine.
- The machine must be connected
to an earth installation complying
with the standards and
regulations in force in the country
concerned.
- Check that the machine voltage
(see rating plate) corresponds
to the voltage of the local mains
power supply.
- In single phase configuration,
the machine must be connected
to a power line with a maximum
impedance of (0.142+J0.089) Ohm.
The machine is connected to the mains power
supply by means of the power cable (2), including
a differential circuit breaker (3) appropriately sized
for the machine's power absorption.
Connect the machine according to the wiring
diagrams in the figur.e
Equipotential connection (if present)
This connection (required by some standards)
prevents differences in electrical potential between
the earth connections of the devices installed in
the same room.
Machines designed for this type of connection are
provided with a specific terminal (4) on the bottom
of the machine.
Connect an appropriately sized external
equipotential wire in compliance with current
regulations and standards to the corresponding
terminal (4).
Machines without an
equipotential connection
terminal may not be installed in
kitchens.
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