SINGLE SCREW CHILLERS IMM
Engineered for Flexibility and Performance
47
7. Fault Elimination
Phenomena or Problems
Solutions
The bellows is damaged and the
liquid leaks into the casing.
Replacement
Scraps
have
stuck
the
mechanical parts of switches
tightly.
Clear the scraps in the mechanical parts and test for
several times to ensure its normal operation.
Reverse the motion of control
switches
Check the wiring connection based on the wiring
diagram
The control switch fails to actuate
Check the wiring and check whether the flowing
direction sheet has contacted with the pipeline
The switch actuates when liquid
flows and does not reset without
liquid flow.
The direction of liquid flow shall be in line with the
direction of arrow and the liquid shall flow upward in
the vertical pipeline
The switch fails to actuate when
the flow increases
Check whether there are cracks or fractures, if any,
replace the sheet.
HMI shows phase alarm
Verify line voltage within 90% -110% of rated voltage.
Then, phase sequence protection alarm can be reset
by manually rebooting the cabinet.
