Possible Causes / Elimination - Honeywell CBU144 Series Instructions Manual

10.2 Possible causes / Elimination

A B C D E F G H I
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Honeywell GmbH
J K L M N Possible cause
x The pump or pipelines are not completely
ventilated of not filled
Shut-off valves are only opened partially
or not at all
x The dirt trap is clogged
The shut-off valve of the input is closed or
defective
x The shut-off valveof the output is closed
or defective
x Pressure switch is set wrong
x Switch-on pressure is too high
x Membrane pressure vessel is not
precharged enough
x The membrane pressure vessel is defec-
tive
The floating ring seal is defective
Buffer tank is not full
The system check valve is defective
More water is removed than stated in the
ordering data
The motor protection switch is activated,
it is set wrong or the pump is stuck
x The set delay is too short
The main power supply is interrupted
The main fuse in the distributor of the sy-
stem is loose or burned, perhaps too
small or too fast-acting fuses were used
Phase failure
Magnetic valve for the minimum pumping
amount does not switch
x Leak on the output side
x Electrical connection between the buffer
tank control unit and the switch cabinet is
interrupted
x The refilling is too large, odour trap is
clogged
GB
Elimination
Fill or ventilate them
check and open if necesary
clean
check and open if necesary
check and open if necesary
Check the set value
Check the set value
Set the precharge pressure
Renew the pressure pad
check the seal, replace if necessary Instructions for the
replace
Check the water level in the buffer
tank
check and replace if necessary
Consult the manufacturer
Compare the values with those stated
on the type label
Check the set value
check or eliminate the defect, check
the fuse
Check the fuses, renew if necessary,
measure the motor current
check individual phases, replace if
necessary
check or eliminate the defect
check
check or renew the electrical connec-
tion
Check the refilling, check if the odour
trap is clogged, clean if necessary
20 Translation of original - EN1H-1374GE23 R1014
refer to
Instructions for the
pump
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Chapter 9.3.2
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Instructions for the
pressure switch
Chapter 5.
Chapter 9.3.1
Instructions for the
membrane pressure
vessel
membrane pressure
vessel
Instructions for the
pump
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Instructions for the
check valves
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Type label/Pump in-
structions
Chapter 8.3.1.3
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Instructions for ma-
gnetic valves
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