© LNS FOX Instruction manual series WS (USA) pag. 25 of 28 - rev. 06-2014
6.6. Troubleshooting
The following is a list of possible problems with relative solutions. For additional clarifications or support please
contact our technical department.
“Personal safety – integrity of the unit”
Before inspecting the unit:
-
Press the stop button on the thermal switch, lock the control panel and take key
away.
-
Isolate the unit from electrical power source ensuring that nobody can restore power.
-
Signal with proper signs that maintenance operations are undergoing.
-
During maintenance operations wear appropriate safety protective gears such as:
gloves, goggles, shoes and so on.
•
In order to avoid possible damages to objects or people censure that
maintenance is undertaken by qualified personnel in accordance to safety
procedures..
•
Nuts and bolts can only be reused if in perfect conditions. Otherwise replace them
with new ones identical to the originals. Self locking nuts must always be replaced
with new ones.
Problem
Possible cause
Remedy
Insufficient air flow
Clogged filter
•
Check reading on the pressure gauge and if
necessary replace the main filter (stage 3)
•
Check conditions of the prefilter (stage 1) and
replace it if necessary
Clogged inlet ducting
Remove objects obstructing inlet
Exhaust air on the Upper lid
clogged
Remove objects obstructing cleaned air exhaust
Incorrect selection of Ws
size (unit too small for the
application)
Contact our technical department
Machine tool enclosure
sealed
If by slightly opening the machine’s door the problem s
solved remove minor covers or drill ventilation holes in
order to let fresh air inside the unit
Insufficient air filtration
level
Main filter (stage 3)
deteriorated or incorrectly
installed
Verify correct filter positioning. If necessary replace it or
replace seal.
Dry smoke due to coolant
burning
Install absolute Hepa filter
Excessive vibrations
Unbalanced impeller and/or
worn bearings
Turn the unit off and contact our technical department.
Securing of the unit
approximate and/or anti
vibration mounts broken,
worn or incorrectly
positioned
Check positioning and conditions of the anti vibrations and
replace them if necessary.
Abnormal noise
Worn bearings
Replace motor bearings
Interference between the
impeller and its case and or
other part of the unit.
Turn off the unit immediately, verify the reason for the
interference and solve the problem. For further information
contact our technical support
Short lifetime of the
filter
Prefilter (stage 1) is missing
or misplaced
Check whether the prefilter cartridge is placed correctly
Seals positioned incorrectly,
worn or broken
Verify and in case replace seals (pay special attention to
the one between the prefilter and the impeller case.
Unit is not perfectly closed
Close the upper part and secure the latches.
missing or incorrect
implementation of the siphon
Do the siphon trap according to what is described in 4.3.1.
Thermal switch
intervenes
Incorrect Ampere setting
Verify absorbed current value and adjust thermal switch
accordingly
Motor is causing a short or
absorbed current is above
nominal value
Verify possible causes and solve the problem. In case of
the motor causing a short proceede with the replacement
of the motor.
