Instructions
EZ Boost
TM
System
26
7.4. EZ Boost BMQE Built-in Protection
The EZ Boost BMQE incorporates an electronic unit which
protects the motor in various situations.
• In case of overload, the built-in overload protection
will stop the BMQE for 5 minutes. After that period,
the booster module will attempt to restart.
• If started without water (dry running), the BMQE will
stop after 30 seconds.
• If stopped as a result of dry running, the BMQE will
start automatically after 5 minutes.
The motor is protected against the following conditions:
• Dry running
• Voltage surges (up to 4000 V)
• Under voltage
• Over voltage
• Overload
• Over temperature
7.4.1. Restarting the BMQE pump
To reset the EZ Boost BMQE, switch off the electricity
supply for 1 minute.
8. EZ Boost System Service
8.1. EZ Boost BMQE Service
For the replacement and repair of parts of the EZ Boost
BMQE, please refer to:
1. Service instructions for SQE pumps describing
replacement of motor cable and motor.
2. Parts list for SQE with instructions for dismantling and
assembly of pump and motor.
8.2. EZ Boost Controller Service
Before starting any work on the EZ Boost
controller, make sure that the electricity supply
has been switched off and that it cannot be
accidentally switched on.
The EZ Boost controller continuously receives
operating data from the pump. In case of an
alarm, the service indicator light is permanently
on, see fig. 13.
CONTROL INDICATOR
MIN. SPEED
MAX. SPEED
SENSOR DEFECTIVE
OVERLOAD
OVERTEMPERATURES
SPEED REDUCTION
VOLTAGE HARM
NO CONTACT TO PUMP
Fig. 13
The service indicator light will be permanently on if one of
the following alarm situations occurs:
• Sensor defective.
• Overload.
• Over temperature.
• Speed reduction.
• Voltage alarm.
• No contact to pump.
To identify the cause of the service alarm, it is necessary to
remove the front cover from the EZ Boost controller. Fit the
front cover as shown in fig. 14 to avoid disconnecting the
multi-core cable.
A number of LED’s are mounted on the supply board inside
the EZ Boost controller, see section 7.3.3. Position of LED’s.
Fig. 14 shows the LED’s and the alarm texts on the supply
board.
Fig. 14
LEZTL01.indd
10/8/2004, 1:39 PM
26
