Xylem IM254R01 e-HM Series - Manual (Page 5)

4 Installation
Precautions
WARNING:
• Observe accident prevention regulations in force.
• Use suitable equipment and protection.
• Always refer to the local and/or national regulations,
legislation, and codes in force regarding the selection of
the installation site, plumbing, and power connections.
4.1 Facility requirements
4.1.1 Pump location
DANGER:
Do not use this unit in environments that may contain flam-
mable/explosive or chemically aggressive gases or powders.
Guidelines
Observe the following guidelines regarding the location of the prod-
uct:
• Make sure that no obstructions hinder the normal flow of the cool-
ing air that is delivered by the motor fan.
• Make sure that the installation area is protected from any fluid
leaks, or flooding.
• If possible, place the pump slightly higher than the floor level.
• The ambient temperature must be between -30°C (-22°F) and
+40°C (+104°F) unless otherwise specified in the data plate.
• The relative humidity of the ambient air must be less than 50% at
+40°C (+104°F).
Installation above liquid source (suction lift)
The theoretical maximum suction height of any pump is 34 ft. In prac-
tice, this is not achieved due to the following conditions affecting the
suction capability of the pump:
• Temperature of the liquid
• Elevation above the sea level (in an open system)
• System pressure (in a closed system)
• Resistance of the pipes
• Own intrinsic flow resistance of the pump
• Height differences
NOTICE:
Do not exceed the pumps suction capacity as this could cause cavita-
tion and damage the pump.
4.1.2 Piping requirements
Precautions
WARNING:
• Use pipes suited to the maximum working pressure of
the pump. Failure to do so can cause the system to rup-
ture, with the risk of injury.
• Make sure that all connections are performed by quali-
fied installation technicians and in compliance with the
regulations in force.
• Do not use the on-off valve on the discharge side in the
closed position for more than a few seconds. If the
pump must operate with the discharge side closed for
more than a few seconds, a bypass circuit must be instal-
led to prevent overheating of the water inside the
pump.
Piping checklist
• Pipes and valves must be correctly sized.
• Pipe work must not transmit any load or torque to pump flanges.
4.2 Electrical requirements
• The local regulations in force overrule these specified require-
ments. In the case of fire fighting systems (hydrants and/or sprin-
klers), check the local regulations.
Electrical connection checklist
Check that the following requirements are met:
• The electrical leads are protected from high temperature, vibra-
tions, and collisions.
• The power supply line is provided with:
• A short-circuit protection device
• A main disconnect switch.
The electrical control panel checklist
NOTICE:
The control panel must match the ratings of the electric pump. Improp-
er combinations could fail to guarantee the protection of the motor.
Check that the following requirements are met:
• The control panel must protect the motor against overload and
short-circuit.
• Install the correct overload protection (thermal relay or motor pro-
tector).
Pump Type Protection
Single phase standard electric
pump up to 3 HP
• Built-in automatic reset
thermal-overload protec-
tion
• Short circuit protection
(must be supplied by the
installer)
Three-phase electric pump • Thermal protection (must
be supplied by the instal-
ler)
• Short circuit protection
(must be supplied by the
installer)
• The control panel must be equipped with a dry-running protec-
tion system to which a pressure switch, float switch, sensors, or
other suitable device is connected.
• The following devices are recommended for use on the suction
side of the pump:
• When the liquid is pumped from a water system, use a pres-
sure switch.
• When the liquid is pumped from a storage tank or reservoir,
use a float switch or sensors.
• When thermal relays are used, relays that are sensitive to phase
failure are recommended.
The motor checklist
Use cable according to rules with 3 leads (2+earth/ground) for single
phase versions and with 4 leads (3+earth/ground) for three-phase ver-
sion.
4 Installation
4 Model e-HM Installation, Operation, and Maintenance Manual