Product Overview

Electronic Drive Manual
12
5.4 Faults, causes, and remedies
The pump does not start
Cause Remedy
No power. Check the power supply and
ensure that it is properly terminated
to the pump power.
Tripped circuit Reset power supply circuit breaker
breaker or ground- and determine cause for
fault protection overload.
device or the
circuit breaker.
The pump starts but the thermal protection is
triggered after a short time
Cause Remedy
Incorrect wiring Check and replace the components
size or circuit as necessary.
breaker rating not
suitable for motor
current.
Thermal overload Check the pump working
protection due to conditions.
excessive input.
Missing a phase in Verify continuity and ensure
the power supply. proper wiring connections.
The pump is noisy
Cause Remedy
Not thoroughly Switch off the pump and after
vented. 30 seconds switch on again to
restart the automatic air-venting
procedure.
Cavitation due to Increase the system
insufcient suction suction pressure within the
pressure. admissible range.
Foreign objects in Clean the system.
pump.
Worn out bearing Replace pump.
6.1 External temperature sensor
As briey described in sec. 2.5.5, the circulator can be
equipped with an external KTY83 temperature probe
(1KΩ at 77F) for the purpose of measuring an absolute
or a differential uid temperature, in temperature
dependent or temperature inuenced control modes.
The sensor may be strapped to the pipe or inserted in
an immersion well for sensing hot or cold water. The
sensor may also be used to sense air temperature in an
air duct.
Multiple sensors may be connected in parallel-series
conguration for averaging temperature measurements.
Accessories
6. Accessories
Sensor
placed
in well
Use heat
conducting
compound
1/2” NPT
Immersion
well
Sensors
NOTE:
TO SETUP PARAMETERS AND ADJUST FLUID
TEMPERATURE DEPENDENT CONTROL MODES,
THROUGH MODBUS OR BACnet PROTOCOLS,
REFER TO THE FOLLOWING TECHNICAL
BROCHURES POSTED ON THE B&G WEBSITE AT:
www.bellgossett.com:
P0002563 ecocirc XL Modbus Parameters
P0002566 ecocirc XL BACnet Objects