Environmental Conditions; Power Supply - Pentair VLR Serie Manual De Instrucciones

GB
ATTENTION
Do not cover or obstructs the motor fan covering grid.

ENVIRONMENTAL CONDITIONS

• Allowed temperature range:
-15 °C ÷ +40 °C
CONNECTION
The piping to which the machine must be connected must have the following characteristics:
• Axiality among the delivery and
suction piping with minimum
diameters fit for the machine
• Distance between the two pipelines as
shown in the "Product specification"
paragraph "Foundations""
• Fastening to a fixed support, in order
not to discharge stresses and/or
vibrations on the machine
If the machine can work with a valve closed on the delivery piping, recycling piping for safeguarding the machine with the
following characteristics:
PIPING ASSEMBLY
incorrect
air locks

POwER SUPPLY

The power supply mains must have the following characteristics:
• A differential protection
• Voltage and frequency values
matching the ones shown on the
machine motor rating plate
• A power output not lower than the
value shown on the machine motor
rating plate
ACCESS
Connect the machine in a place that can be easily accessed for maintenance operations.
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• Allowed relative humidity range:
30 ÷ 90%
• Absence of air locks, as shown in the
piping figure
• Suction piping length reduced as
much as possible
• Load losses in the suction piping
minimised (if the machine works
in suction mode. See "Machines
installed above head")
correct
• An electromagnetic switch having a fit
thermal protection
• A self-balanced thermal relay
adjusted on the basis of the actual
absorbed current
• A cut-off switch with protecting fuses
• Protection from atmospheric agents
• Gates on delivery and suction pipe
lines
• If the machine is installed above head,
check valve on the suction piping
• If the machine feeds a boiler, check
valve on the delivery piping
• If the fluid circulating in the piping
has a temperature exceeding 65 °C,
protection against high temperatures
Connection between:
• Delivery and suction pipe lines
• Delivery and drain pipe lines
Control by mean of:
• Thermostatic valve
• Solenoid valve controlled by
pressure gauge or thermostat
• Cables having a section fit for the
current absorbed by the motor.