Checking Maximum Pressure; Minimum Rated Capacity; Installation Of The Pump; Assembly Guidelines - FPS VR Serie Manuel D'installation Et D'utilisation

5.2 Checking Maximum Pressure

It is important to maintain the sum of the inflow pressure and that developed by the pump, the latter with feeder
closed, always lower than the maximum pressure rating (PN) permitted by the pump. The maximum pressure rating
PN is shown in the technical specifications.
Case 1:
Single standard pump (Fig. 3-A)
P1max + P2max <= PN
Case 2:
Standard pump + high pressure pump (Fig. 3-B)
P1max + P2max + P3max <= PNHP
In this case, refer to the maximum pump pressure provided in the technical specifications.

5.3 Minimum Rated Capacity

The function of the pump at a lower level than the minimum permitted rated capacity may cause excessive and
detrimental overheating of the pump.
For liquid temperatures higher than 104 °F (40 °C), the minimum capacity should be increased in relation to the
temperature of the liquid (Fig.5).
WARNING: The pump should never operate dry (without liquid inside).
WARNING: The pump must never operate with the delivery valve closed for more than 10 seconds.

5.4 Installation of the Pump

WARNING: Please observe current accident prevention standards; use proper protective devices
and refer to the regulations, legislation, and local and/or national country codes for water and
electricity connections.
WARNING: Before starting work on the electric pump, make sure the electrical connection has been
disconnected from the power supply network and that it cannot be reconnected accidentally.
WARNING: Ensure all electrical equipment of the pump, motor, and monitoring equipment is earthed. The
earth connection should be the last connection to disconnect from the terminal. Make sure that the earth
connection is longer than the phase connections on both ends of the cable. As extra protection from lethal
electric shocks, install a Ground Fault Circuit Interrupter (GFCI).
WARNING: DO NOT USE THIS PUMP IN ENVIRONMENTS THAT MAY CONTAIN INFLAMMABLE/
EXPLOSIVE OR CHEMICALLY AGGRESSIVE DUST OR GAS.
WARNING: The installation of the pump is an operation that may prove complex. It should therefore be
carried out by skilled and authorized installers.

5.4.1 Assembly Guidelines

• Install the pump in an accessible area, protected from frost and leaving sufficient space around the pump
to allow for its operation and maintenance. Horizontal assembly is permitted only if the pump is properly
supported. Vertical assembly is not permitted with the motor placed below the pump (Fig. 4).
• Check that there are no obstacles blocking the air flow to cool the motor, make sure there is at least 4" (100
mm) of space in front of the fan (Fig. 6).
• Any liquid leakages or similar events must be drained and should not flood the place of installation and/or
submerge the unit.
• The pump must ALWAYS be firmly fixed to a concrete base or to a metal structure of size and weight to
suit the size and weight of the pump and motor assembly; use screws suitable for the fixing holes provided
(Fig. 7 dimensions, tightening torques). To reduce vibrations to a minimum, insert vibration-dampening seals
between the pumps and the base.
• Make sure the pump is correctly aligned with the pipes: The flow arrows shown on the pump should point in
the direction of flow of the connection pipes.
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