10.4 Material recycling and discharging
11 Troubleshooting
Problem
Possible cause
Solution
Liquid flow too low
Check the valves/filters.
Leakage in system/coil block
Check the connections, brazings in the heat
transfer section and the tubing. When there is a
leakage in the heat transfer section, contact the
manufacturer for further repair instructions.
Wrong flow direction in the
circuiting
Liquid cooler tube connections
on page 47.
Air in system
Ventilate the system.
Fan/fans not operating
Locate the problem and repair it or change the
fan unit.
Heat transfer section blocked up/
dirty
Vacuum clean/wash the heat transfer section.
Incoming air flow too low
Check the minimum distance between the unit
on page 42).
Ensure that there are no obstacles for the air
flow.
Wrong fan rotation direction
Wrong phase sequence. Change the connection
on motor coupling or from the switch board.
Short of capacity
Inlet air too warm
Check the location of the units (see
on page 42). Shade the unit from the sun. The
heat transfer capacity can be increased by a
water jet system.
There may be hot air recirculation in the unit.
Use streamers and/or wind barriers to minimize
recirculation.
Broken fan
Repair or change the fan.
Dirty fan
Clean the device; if it is unstable after cleaning,
replace the fan.
Vibration in the unit
Damaged vibration dampers
Install new vibration dampers.
Fan frozen in fan collar
Remove ice.
Fuse blown out
Replace the fuse.
Fan does not start
Overload release
Check and reset the device from the overload
release switch.
©
Alfa LU-VE, Rev-04
87
Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.
