Instructions
EZ Boost
TM
System
1. Physical separation of the cables – maintain a minimum
of 12 inches between pump power cables, and never place
more than one cable in a conduit.
2. Use shielded cable – the use of shielded cable prevents
cross communication between parallel cables and allows
sharing of conduit and cable trays. Tie the cable shield to
ground only at the EZ Boost controller panel.
Suitable cables:
Manufacturer
Part number
Gage
Anixter
2A-1403S
14
Anixter
2A-1203S
12
Anixter
2A-1003S
10
Anixter 800-321-1486
2. Overview of built-in protection
2.1. Run-dry protection
The EZ Boost BMQE pumps are protected against dry-
running. In case of dry-run, the BMQE will stop after an
accumulated time of 5 seconds thus preventing a burnout
of the motor. After a dry-running alarm, the pump restarts
automatically after 5 min.
2.2. Overload protection
Exposure of the BMQE pump to heavy load causes the
current consumption to rise. The motor will automatically
compensate for this by reducing the speed. If the speed
drops to 30% of the rated speed, the motor will be cut
out. If the rotor is being prevented from rotating this will
automatically be detected and the power supply cutout.
Consequently, no extra motor protection is required.
2.3. Over voltage and under voltage
protection
Over voltage and under voltage may occur if the voltage
supply is unstable. The integrated protection of the BMQE
motor protects the motor if the voltage falls outside the
permissible voltage range. With a rated voltage of 200
- 240 V, 60 Hz, the pump will be cut out if voltage falls
below 150 V or rises above 280 V. With a rated voltage of
110 - 115 V, 60 Hz, the pump will be cut out if voltage falls
below 75 V or rises above 150 V. The motor is automatically
cut in when the voltage is again within the permissible
voltage range. Therefore, no extra voltage protection relay
is required.
3. Final check
3.1. Pumped liquids
The EZ Boost BMQE must not be used for the
transfer of flammable liquids such as die-
sel oil, petrol or similar liquids. The EZ Boost
BMQE is designed for pumping thin, clean,
non-aggressive, non-explosive liquids, not con-
taining solid particles or fibers. The EZ Boost
BMQE is suitable for pressure boosting clean,
cool, potable water. The liquid must not
attack the pump materials chemically or mechan-
ically.
Liquid temperature:
The temperature of the pumped liquid
must not 95°F (+35°C).
Delivery and transportation
GRUNDFOS EZ Boost System components are supplied
from the factory in proper packaging in which they should
remain until they are to be installed. The components are
ready for installation.
3.2. Preparation
Before installation, the following checks should be made:
•
Pump type:
Check that the pump
type stated on the name-plate fitted to
the module sleeve corresponds to order.
•
Electricity supply:
The motor voltage
and frequency details stated on the
nameplate should be compared with the
actual electricity supply available.
3.3. Sound pressure level
The sound pressure level of the BMQE is <74 db[A] at a
distance of 3 feet (1 meter).
It is recommended by Grundfos
that the pump be installed with sound and vibration damp-
ening equipment such as; flexible piping adapters and anti-
vibration mounting. The pump should not be mounted in or
adjacent to living quarters. The pump can also be wrapped
with sound proofing insulation to reduce noise.
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