Pfannenberg EB 210 WT B Manual De Uso Y Mantenimiento página 92

EN
Symtoms
Unit stops and does
not start again due to
switching of high
pressure switch
No coolant
circulation
NOTICE
High pressure switch reset
After the high pressure switch has switched off the refrigerating cycle, it needs a manual reset to start the
cooling cycle again by pressing the appropriate button on the machine display.
Operating and Maintenance Instructions - Chiller - Series EB 210 - EB 440
Troubleshooting tips
Possible cause
Dirty condenser
Broken fan
Reversed fan rotating direction
Ambient temperature too high
Water setpoint too high (in
combination with high ambient
temperature)
Chiller operating without lateral
panels
Note: after solving the cause of the fault, start the chiller by pressing the reset
button.
Pump is down
Reversed pump rotating direction
Pressure loss of application too high
Proposed remedy
Clean the condenser with
a) a soft bristle (not wire!) brush
b) compressed air blown from the inside out
c) water rinse from inside out and top to
bottom
Do not use any chemicals or a pressure
washer!
Replace the fan
Verify the connection on the terminal board
of the electrical box
Provide adequate ventilation with air at max
or lower temperature as specified
Set up the chiller in a colder place
Reduce the water temperature set-point
Mount the panels on the unit
Verify the connection on the terminal board
of the electrical box
Check the right rotation of the electrical
motor
Verify the regulation of hydraulic bypass
where installed
Verify circuit pressure drop to reach the
nominal flow rate
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