LNS WS Series Manual

OIL MIST COLLECTORS
Series WS mod. 170 - 330 - 700 - 1020 - 1250
INSTRUCTION AND INSTALLATION MANUAL

© LNS FOX Instruction manual series WS (USA) pag. 2 of 28 - rev. 06-2014
Index
1. General information........................................................................................................................3
1.1. Foreword....................................................................................................................................3
1.2. Safety operation.........................................................................................................................3
1.2.1 Description and positioning of information labels....................................................................................3
1.2.2. Main safety prescriptions:.......................................................................................................................4
1.3. Range of applications:................................................................................................................4
1.3.1. Intended uses.........................................................................................................................................4
1.3.2. Not intended uses...................................................................................................................................4
1.3.3. Operating conditions ..............................................................................................................................4
1.4. Identification and specifications..................................................................................................5
1.5. Supply Content...........................................................................................................................5
1.6. Accessories................................................................................................................................5
1.7. Warranty ....................................................................................................................................6
2. Handling, transportation and storage............................................................................................6
2.1. Movement and transportation of the packaged unit....................................................................6
2.2. Movement and transportation of the unit ....................................................................................6
2.3. Storage ......................................................................................................................................6
3. Description and features of the unit..............................................................................................7
3.1. Description of the components...................................................................................................7
3.2. General characteristics...............................................................................................................8
3.3. Air Flow curves...........................................................................................................................8
3.4. Electrical characteristics.............................................................................................................8
3.5. Dimensions (inches)...................................................................................................................9
4. Installation..................................................................................................................................... 10
4.1. Minimum space for installation.................................................................................................10
4.2. Examples of possible installations............................................................................................10
4.3. Ducting.....................................................................................................................................10
4.3.1 Trap with use of trap bracket (included in the supply)...........................................................................12
4.3.2 Trap without use of trap bracket............................................................................................................12
4.3.3 Trap with immersion of the tube in a container of liquid........................................................................13
4.4. Electrical connections...............................................................................................................14
4.4.1 electrical connection for electric motor with 9 wires..............................................................................15
4.4.2 electrical connection for electric motor with 6 wires..............................................................................15
4.4.3. Thermal switch settings........................................................................................................................15
5. Unit’s operation.............................................................................................................................16
5.1. Starting and stopping the unit...................................................................................................16
5.2. Monitoring devices ...................................................................................................................16
6. Maintenance..................................................................................................................................17
6.1. Maintenance schedule .............................................................................................................17
6.2. Ordinary maintenance..............................................................................................................17
6.2.1. Pre filter (stage 1) maintenance...........................................................................................................17
6.2.1.a Emulsion version prefilter...................................................................................................................18
6.2.1.b Oil version prefilter .............................................................................................................................18
6.2.2. Main filter (stage 3) maintenance for OIL and EMULSION versions ...................................................20
6.3. Special maintenance................................................................................................................20
6.3.1. Centrifugal filtration (stage 2) maintenance .........................................................................................20
6.3.2. Cleaning of the impeller........................................................................................................................21
6.3.3. Seals Replacement ..............................................................................................................................22
6.3.4. Electric motor - Installation and removal..............................................................................................22
6.4. Torque settings ........................................................................................................................23
6.5. Periodic checks........................................................................................................................23
6.6. Troubleshooting .......................................................................................................................25
6.7. Disposal...................................................................................................................................26
6.7.1. Disposal of consumables .....................................................................................................................26
6.7.2 Disposal of the unit................................................................................................................................26
7. Spare parts....................................................................................................................................27
7.1. Spare filters reorder codes.......................................................................................................27
7.2. Complete Spare List.................................................................................................................28

© LNS FOX Instruction manual series WS (USA) pag. 3 of 28 - rev. 06-2014
1. General information
1.1. Foreword
Dear customer, this manual contains all the indications and necessary information for the installation, operation
and maintenance of the WS oil mist filters.
The indications included in this manual can be classified as:
A) Indications relative to Personal safety
This warning symbol identifies special instructions or procedures which, if partially or totally ignored,
could result in physical injuries.
B) This caution symbol identifies special instructions referring to the integrity of the unit and to
procedures which, if not strictly followed, could result in damages to or destruction of the unit and/or
of connected equipments.
C) This symbol refers to other important indications that are not already included in the 2 previous
categories.
1.2. Safety operation
Before operating the unit it is recommended to read this manual, paying particular attention to the prescriptions
contained in the Personal safety and integrity of the unit sections.
This unit has been designed and produced in compliance with the following safety norms of the European
Community:
•Machine directive 2006/42/EC
•Low tension guidance 2006/95/EC
•Directive magnetic compatibility 2004/108/EC
In compliance to safety norms, every residual risk found during the risk analysis has been reported and
highlighted on this manual. Additional safety indications are described on the labels placed on the unit.
“Personal safety – integrity of the unit”
LNS FOX is not liable for possible injuries to people and/or damages to objects caused
by negligence of non observance of any safety direction.
1.2.1 Description and positioning of information labels
A
Warning/caution
label to recall the
importance of
reading the
instruction
manual and
main safety
prescriptions
B
Serial number label
C
Main filter technical data label
(stage 3)
Label with
minimum
dimension/
distance of
p-trap
D
Impeller rotation direction
E
Original filters set up
Fig. 1a Main signal labels

© LNS FOX Instruction manual series WS (USA) pag. 4 of 28 - rev. 06-2014
Fig. 1 b Labels location
1.2.2. Main safety prescriptions:
a) This instruction manual must be read entirely before installing, starting and operating on the unit
b) Ensure that the power supply is isolated before working on the unit.
c) During installation or maintenance make sure that the operator wears appropriate safety protection clothes.
1.3. Range of applications:
1.3.1. Intended uses
The WS oil mist filter line is designed for:
•Filtration of mist, vapors smoke and odors created by oil and emulsion used on machine tools. The
elimination of smoke and odors is also possible by adding an additional filtration module.
1.3.2. Not intended uses
•Filtration of potentially flammable vapors
•Filtration of substances potentially explosive
•Filtration of solvent, paint or other adhesive substances
•Filtration of acids and or corrosive substances
“Personal safety– integrity of the unit”
LNS FOX declines any responsibility for possible injuries to people and/or damages to
objects due to incorrect utilization of the unit.
1.3.3. Operating conditions
Operating conditions must be within the following ranges:
•Temperature: from 41 to 104 Fahrenheit
•Relative humidity of the environment: from 30 to 85%
•Relative humidity on the unit’s inlet: from 30 to 98%

© LNS FOX Instruction manual series WS (USA) pag. 5 of 28 - rev. 06-2014
•Maximum altitude: 3300 feet above sea level
•Maximum concentration of the oil mist: 360 mg/m3
“integrity of the unit”
LNS FOX declines any possible responsibility for damages to the unit due to use under conditions
different than the ones above specified.
1.4. Identification and specifications
Technical data and identification of the unit are listed on the serial number tag (located on the back of the unit by
the power inlet).
(fig.2 serial number)
The following information can be found on the serial number tag:
Modello/Model WS 330 Matricola/Serial 1005
Anno/Year 2003 I max [A] 1,00
Portata/Air Flow [cfm] 330 Power [hp] 0,5
Massa/Weight [lbs] 77 [V/Hz/ph] 230/60/3~
LNS ITALIA s.r.l. con socio unico
Via Mons.Colombo,34-21053 CASTELLANZA (VA) Italy Tel.[phone]
Made in Italy
1.5. Supply Content
•Instruction manual
•Inspection sheet
•CE declaration
•Anti-vibration mounts kit
1.6. Accessories
For a complete list of available accessories please contact our sales department.

© LNS FOX Instruction manual series WS (USA) pag. 6 of 28 - rev. 06-2014
1.7. Warranty
LNS Italia, the supplier, guarantees its products for 365 days starting from the date of the installation which,
unless specifically agreed must not be over 60 days from the delivery date.
The warranty is ex works and, upon discretion of the supplier is limited to the repair or replacement of the product
once proven to be defective or not appropriate for the use it was designed for.
The buyer is responsible for officially reporting the supplier within 7 days the anomaly found. In addition, the
buyer is also responsible for having the product at the supplier’s disposition.
If necessary, in order to avoid further damages or following a specific request from the supplier, the buyer is
responsible for stop using the unit from the time when the failure is found.
Lack of communicating the problem within 7 days or additional damages done to the unit due to its continuous
use, can result, upon discretion of the supplier, in a reduction or cancellation of the warranty.
The warranty is ex works unless specified by the supplier.
In the event of repair works done on the customer’s site the warranty does not cover travel related expenses.
The warranty does not apply in case of damages caused by improper and/or not according to this manual use of
the unit. Every attempt to repair the unit by personnel not authorized by LNS Italia will result in a reduction or
cancellation of the warranty. Except in the case of intentional malpractice of the supplier, the monetary
compensation for damages can not exceed the cost of the unit. LNS Italia is not liable for indirect damages.
2. Handling, transportation and storage
2.1. Movement and transportation of the packaged unit
“Personal safety – integrity of the unit”
LNS FOX declines any possible responsibility for possible injuries to people and/or
damages to objects due to movement procedures not conforming with safety standard.
Unit must be handled by qualified personnel properly trained for utilization of tools and machines dedicated for
the movement of the goods. Weights of the units and indications on how to move it are indicated on the
packages.
2.2. Movement and transportation of the unit
Each unit is equipped with 4 eye bolts that must be used only for moving the unit.
“Personal safety – integrity of the unit”
Lifting operations must be undertaken by trained personnel with adequate lifting
devices.
The unit must be lifted with wire ropes having proper load capacity. The rope must be tied to the eye bolts.
2.3. Storage
Units must be kept in a dry environment and conditions must be within the following ranges:
•Temperature 32F – 104F
• Relative Humidity: 30 – 80 %

© LNS FOX Instruction manual series WS (USA) pag. 7 of 28 - rev. 06-2014
3. Description and features of the unit
Fig. 4 Components of the unit
a) Control panel box
b) Pressure gauge
c) Inlet
d) Drainage
e) Draw latches
f) Eye bolts
g) Anti-vibration mounts
h) Prefilter (stage 1)
i) Centrifugal filtration (filterless, vibration free) (stage 2)
j) Main cartridge filter (stage 3)
3.1. Description of the components
a) Control panel box with thermal switch
The control panel can also include additional optional controls such as:
•Timer
•Signal lights
•on/off switch (in place of the thermal switch)
•Remote relay
for additional information please contact our technical department
b) differential pressure gauge – The gauge indicates the clogging status of the main filter (stage 3). The
cartridge must be replaced once it reaches the red area of the scale. It is possible to have, as an option, a
pressure gauge to monitor the prefilter (stage 1).
c) air inlet
d) drain tube - to discharge recollected coolant
e) Draw latches - equipped with a safety springs to prevent accidental opening of the unit. To open the unit
press the spring and unlock the latches
“Personal safety – integrity of the unit”
Before unlocking latches verify that the unit is securely installed on the 4 anti vibration
mounts.
f) Eye bolt for lifting the unit

© LNS FOX Instruction manual series WS (USA) pag. 8 of 28 - rev. 06-2014
g) anti-vibration mounts to reduce the vibration level transmitted to the structure.
h) Pre-filtration (stage 1)
The cartridge, composed of 3 different stages with progressive filtration levels guarantees high capability of
accumulating particles and the slow and efficient draining effect. The first element (metallic screen) is washable.
i) Centrifugal filtration (stage 2)
A special impeller (vibration free) ensures the centrifugal effect that enables the continuous discharge of
condensed particles.
j) Main filtration (stage 3)
Made of fibreglass, provides an average filtration efficiency level > 99 %. (measured accordingly to AFNOR NFX
44-060 norm). Its clogging is monitored by a pressure gauge that, once it reaches the red area of the scale,
indicates that the cartridge must be replaced.
For special applications there is the possibility to install an additional filtration module that perfectly fits on the
unit. The addition is simple and can be performed even later on with a special kit.
•Absolute: to eliminate dry smoke, filtration level HEPA up to H 13 - 99.95 MPPS according to EN
1822
•Activated carbon: to eliminate odors
3.2. General characteristics
Model
WS
170
WS
330
WS
700
WS
1020
WS
1250
Frequency [Hz] 60 60 60 60 60
Air flow (*) [cfm] 168 330 665 1012 1248
Pressure max [IN W.C.] 2,41 3,57 5,70 7,23 9,23
Noise level [dB(A)] 63 65 71 73 75
R.P.M. [min
-
1
]
3290 3350 3420 3425 3425
Weight [lbs] 62 77 121 165 187
(*) with additional filtration stage (HEPA filter or activated carbon) air flow is reduced by about 15%
3.3. Air Flow curves
Fig. 5 Performance curve at 60Hz
3.4. Electrical characteristics
Electric motor (three phases)
WS
17
0
WS
33
0
WS
700
WS
1020
WS
1250
Shaft height
63 71 80 90 90
Frame
B5 B5 B5 B5 B5
N°poles
2 2 2 2 2
Protection index IP
55 55 55 55 55
Isolation class
F F F F F
Voltage/frequency V/Hz]
230-400-460/60
Power [hp]
0.4 0.6 1.2 2.4 3.5

© LNS FOX Instruction manual series WS (USA) pag. 9 of 28 - rev. 06-2014
3.5. Dimensions (inches)
Model
A
B
C
D
E
ΦF
G
H
I
L
N1xN2xΦM
WS 170
14,88 18,74 22,20 16,46 8,86 3,86 0,98 1,26 3,15 3,94 13,07 x 15,04 x 23/64"
WS
330
16,06 19,88 24,80 17,72 10,43 4,84 0,98 1,65 3,35 4,69 14,29 x 15,55 x 23/64"
WS 700
20,67 23,31 30,75 20,98 13,90 5,83 0,98 1,65 3,54 5,35 18,82 x 18,82 x 23/64"
WS 1020
23,62 26,26 35,12 23,90 15,24 7,80 0,98 1,65 3,74 6,61 21,73 x 21,73 x 23/64"
WS 1250
26,10 28,74 38,62 26,38 17,20 7,80 0,98 1,65 3,94 6,81 24,21 x 24,21 x 23/64"
Fig. 6 Dimensions
Model
A
B
C
D
E
ΦF
G
H
I
L
N1xN2xΦM
WS 170V
14,88 18,74 23,43 16,46 6,61 3,86 0,98 1,26 3,15 7,52 13,07 x 15,04 x 23/64"
WS 330V
16,06 19,88 27,17 17,72 7,15 5,43 0,98 1,65 3,35 8,07 14,29 x 15,55 x 23/64"
WS 700V
20,67 23,31 33,15 20,98 9,41 7,01 0,98 1,65 3,54 10,2 18,82 x 18,82 x 23/64"
Fig. 6 a Dimensions

© LNS FOX Instruction manual series WS (USA) pag. 10 of 28 - rev. 06-2014
4. Installation
“Personal safety – integrity of the unit”
In order to avoid possible damages to people or objects make sure that installation in
undertaken by qualified personnel.
Before proceeding with the installation of the unit locate the best possible position for placing the unit and for
locating the suction point. Consider the following hints:
4.1. Minimum space for installation
Before installing the unit verify and make sure that enough space is available as described in the following
drawing:
A
B
C
D
WS 170
12 4 12 24
WS 330
12 4 14 24
WS 700
14 4 16 24
WS 1020
16 4 18 28
WS 1250
18 4 20 28
Fig. 7 minimum space for installation (inches)
4.2. Examples of possible installations
Fig. 8a) Direct installation on the
machine tool enclosure b) Installation on trolley c) Installation on a vertical stand
4.3. Ducting
The suction hole (if not already present on the machine tool enclosure) must be done according to the following
indications (whenever possible):
- Opposite side of the machine opening door
- Furthest away from working area.
- Minimizing ducting length (in order to reduce pressure drop is it reccomended, use suction tube lenght max
of 15 feet.)

© LNS FOX Instruction manual series WS (USA) pag. 11 of 28 - rev. 06-2014
- In case of considerable distance between the unit and the machine tool is it recommended to have some
portion of it rigid instead of flexible.
The following components are necessary for installing the unit:
•Anti-vibration kit (included in the supply)
•Flexible ducting
•Flange adaptor
•Flexible drainage tube
•Duct clamps
•Optional drained oil container
•Optional drain trap
Additional accessories are available. Please contact LNS Italia for complete list and prices
- In case of installation of type a: drill 4 holes ø 23/64” on the machine tool enclosure according to dimensions
described on the technical sheet.
- Secure the flange adaptor on the machine tool enclosure
- Secure the unit on the selected area according to the indications described in the paragraph Movement and
transportation of the unit.
- Mount the 4 anti vibrations according to the following drawing.
(fig.9a installation of anti-vibration support)
(fig. 9b anti-vibration)
- Connect the extraction duct with the flange adapter fitted on the machine using a piece of flexible tubing of
proper diameter and length. Secure both ends of the duct with metal clamps.

© LNS FOX Instruction manual series WS (USA) pag. 12 of 28 - rev. 06-2014
Fig.10a
Unit overview Fig.10b Extraction duct assembly Fig 10c Extraction duct assembly on the flange adapter
create a trap on the drainage tube according to the instructions below
Warning: Do NOT use the purifier without a trap on the drainage tube!!
The absence of a trap on the drainage and relative preloading operation prevents re-condensed
liquids from being discharged while the purifier operates.
The normal product life of filters could be seriously jeopardised by continuous use of the purifier
without a drainage trap.
4.3.1 Trap with use of trap bracket (included in the supply)
- Insert a piece of flexible hose in the discharge duct and secure it with a metal clamp
- Attach the bracket to siphon drainage (10e) in a fixed position using two or more screws
- Pass the drain hose into the bracket so that it assumes the shape of "S" as shown in Figure (10 f)
- Insert the other end of the drainage hose inside the tank for collecting the refrigerant or alternatively within a
container as shown schematically in the figure.
- After having create the trap, release the two front latches and lift the top part of the purifier.
- Use a suitable container to remove about 200-300 cc of coolant liquid (oil or emulsion) from the coolant tank.
- Pour the coolant inside the lower part of the purifier in the drainage hole area, in order to preload the
drainage trap and allow the re-condensed liquids to be discharged from the first phases the purifier is used.
- Lower the top part and secure the latches.
- After a few seconds, the oil coming out of the drainage tube indicates that the drainage trap has been
properly preloaded.
4.3.2 Trap without use of trap bracket
In case it is not possible to use the trap bracket, in order to discharge the re-condensed liquid, build a drainage
trap on the flexible discharge hose as indicated in figure 10 g-h-i-l.
- Preloading the trap by following the above procedure in 4.3.1
Fig.10d
Secure the drainage hose Fig.10e Bracket for siphon trap Fig.10f Trap with use of dedicated bracket
Fig.10g Fig.10h - Secure the ring with Fig.10i

© LNS FOX Instruction manual series WS (USA) pag. 13 of 28 - rev. 06-2014
Make a ring as shown in the picture two plastic clamps Drainage trap diameter > 150 mm
10 l) Siphon trap made on a discharge hose 10 m) Siphon trap made with
immersion of the hose in a container
Fig.10n
Release the latches and lift the top
part of the extractor fan
Fig.10o
Pour 200-300 cc oil in the
drainage hole area
Fig.10p
Make sure that oil comes out of the
drainage tube after a few seconds
4.3.3 Trap with immersion of the tube in a container of liquid
In the event that it was not possible to realize the siphon trap according to the previous procedures, it is possible
to directly enter the drainage tube into the tank of cooling liquid or in a container partially filled with liquid (oil or
emulsion) .
In this case make sure that the tube is permanently immersed in the liquid in order to ensure the perfect drainage
of the liquid re-condensed Fig. 10 m)

© LNS FOX Instruction manual series WS (USA) pag. 14 of 28 - rev. 06-2014
4.4. Electrical connections
“Personal safety – integrity of the unit”
Conduit electrical connections should be made by a qualified electrician and must comply
with electrical codes and safety norms Be sure that power is cut off before wiring the unit
The unit is equipped with a protective bonding circuit (in accordance with EN 60204-1 1998 norm). In
order to obtain proper protection from in direct contacts, the power line must include an automatic
circuit breaker. This will ensure an automatic cut off in case of line failure (in accordance with
prescription 413.1 norm IEC 364-4-41)
Main electrical connection, unless otherwise specified, must be done with a 3P + PE wire (3 poles + ground)
according to regulating norms.
As standard equipment, purifiers are supplied with an electrical cable 4Gx1.5 mm
2
5 m long
As an alternative, they can be supplied with a 5Gx1.5 mm
2
cable
It the cable must be replaced with one with different characteristics:
- Loosen the cable gland located on the rear near the identification plate as shown in fig. 11.
- Loosen the 4 front screws on the control panel and remove the front cover
- Loosen the screws on the cable on the motor protector and on the earth terminal.
- Pull the original electrical cable from the sheath.
- Insert the new cable inside the protective sheath.
- Fit a pin fork terminal on the three phase terminals of the new power supply cable and a spade terminal on
the protection terminal.
- Insert the protection cable in the yellow/green terminal and tighten the screw
- Insert three phase wires on the connecting terminals of the motor protector switch L1 – L2 – L3 and tighten
them with max. torque of 2 Nm.
- Make sure the setting of the motor protector switch is congruent with the electrical power data on the plate
(unless subsequent changes have been made, the motor protector switch is normally set during factory
tests).
- Reassemble the front cover and loosen the screws
- Tighten the rear cable gland check that the cable is sealed securely
- Connect the power supply cable to the mains supply using proper components that comply with the
applicable standards.
“Personal safety – integrity of the unit”
Install a protection device that ensures automatic power cut off in case of failure to the
unit or to the power supply.
-
(Fig.11) Power supply inlet (Fig. b) Removal of control panel box (Fig. c) electrical connection
(Fig. d) Setting of thermal switch (Fig. e) Tight gland (Fig. f) Impeller rotating direction

© LNS FOX Instruction manual series WS (USA) pag. 15 of 28 - rev. 06-2014
- Once installation is completed unlock the 2 latches, lift the upper part of the unit and, in accordance to safety
norms, press (in order) the start and stop buttons verifying the rotating direction of the impeller. (rotation is
clockwise side from air intake side.
- If the arrow does not match the rotating direction of the impeller interchange two of the power connection
wires (ensure that power is cut off first)
- Re-start the unit and verify the rotating direction.
Note
If the electrical connections is not the one of the standard version refer to an additional electrical
diagram supplied as attachment.
4.4.1 electrical connection for electric motor with 9 wires
Connection 230V 60 Hz Connection 460 V 60 Hz
(Fig. 12 Wiring diagram 3 ph ∼
∼∼
∼[V/Hz] 230-60 - 460-60)
4.4.2 electrical connection for electric motor with 6 wires
Fig. 12a Connection star
400
-
460V
-
60 Hz
Fig.12b Connection Delta
230V
-
60 Hz
1
- termal switch;
2
- ground;
3
– terminals inside electric motor box
4.4.3. Thermal switch settings
The following data consumption may be subject to change.
Please check the comsumption data, shown on the motor's nameplate or serial.
Model
Voltage
Motor Power hp (kW
)
Absorbed current (A)
Ampere Setting
(A)
WS 170 460 0.4 (0,3) < 0,78 0,78
230 0.4 (0,3) < 1,42 1,42
400 0.4 (0,3) <0,82 0,82
WS 330 460 0.6 (0,44) < 1,09 1,09
230 0.6(0,44) < 2,04 2,04
400 0.6(0,44 <1,18 1,18
WS 700 460 1.2 (0,9) < 1,7 1,7
230 1.2 (0,9) < 3,53 3,53
400 1.2 (0,9) <2,04 2,04
WS 1020 460 2.4 (1,80) < 3,31 3,31
230 2.4(1,80) < 6,76 6,76
400 2.4(1,80) <3,91 3,91
WS 1250 460 3.5 (2,6) < 4,29 4,29
230 3.5 (2,6) < 9,1 9,1
400 3.5 (2,6) <5,26 5,26

© LNS FOX Instruction manual series WS (USA) pag. 16 of 28 - rev. 06-2014
5. Unit’s operation
5.1. Starting and stopping the unit
•The unit can be started by pressing the start button located inside the control panel box.
•Press the stop button to stop the unit.
5.2. Monitoring devices
The unit is equipped with a pressure gauge to monitor the clogging of the main filter (stage 3). Maintenance of
the prefilter (stage 1) is normally required less often and as a consequence is not monitorized by the pressure
gauge. Verify conditions of the prefilter when doing maintenance on the main filter.
From the gauge shown in Figure 13 you can have the following information:
a) Figure 13a the gauge needle near to zero indicates that there is no passage of air and this may be due to two
different causes:
- the oil mist collector is not in operation
- the pre-filter is clogged
-
b) the position b (with needle normally between .1 and .2) is with clean filters and oil mist collector in function
c) the position c (with a needle on the orange or red) indicates that the final cartridge is clogged
13 a) collector OFF
or prefilter
clogged 13 b) with clean filter at first start 13 c) final cartridge clogged
Note
In some extreme cases the prefilter can require shorter maintenance intervals than the main filter.
One example is an application with presence of large amounts of metallic dust. In these cases make
sure that verify conditions of the prefilter more often than indicated on the maintenance section table
Upon request the mist collector can be equipped with additional monitoring devices. Please contact LNS Italia
sales department for additional information.

© LNS FOX Instruction manual series WS (USA) pag. 17 of 28 - rev. 06-2014
6. Maintenance
“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 it.
- 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 people or objects be sure that maintenance
is undertaken by qualified personnel and in respect of safety procedures.
•Before reusing nuts and bolts make sure that they are in perfect conditions
otherwise replace them with new ones. Self locking nuts must always be
replaced.
Note
Maintenance intervals displayed on the following table refer to an average situation and they can
change depending on the type and quantity of the pollutant to be eliminated.
6.1. Maintenance schedule
Clean
Replace
Check
PRE
-
FILTRATION
(Stage 1) Pre filtration case 1000 hrs
Prefilter 1000 hrs
CENTRIFUGAL FILTRATION
Filterless vibration free
(Stage 2)
Impeller case 2000 hrs
Drainage ring 2000 hrs
Impeller 2000 hrs
MAIN FILTRATION
(Stage 3) Cartridge When signalled by
pressure gauge
6.2. Ordinary maintenance
6.2.1. Pre filter (stage 1) maintenance
- Unlock and open draw latches (a)
- Hold the handle and lift the upper part of the unit
- Unscrew wing nut securing the prefilter(b)
- Remove the prefilter cartridge (c)
“integrity of the unit”
Cleaning must NOT be undertaken with tools such as metallic brushes in order to avoid possible
damages to the surfaces and to the internal sealing of the case
- unscrews prefilter wind nut
- remove upper cover and the outer metallic filtration stage (emulsion version only). If clogged, it must be
cleaned with a brush
- remove the filter media
- carefully remove possible residuals from the bottom of the unit
- verify that the drain slotes are not clogged
- verify the seal placed between the prefilter (stage 1) and the impeller case is intact and without leaks
- Wrap new filter set on the filter’s structure ensuring proper closing and positioning
- Reinstall outer metal screen (Emulsion version only), put the top back and secure it.
“Note”
If the drainage slotes are obstructed, remove and clean impeller case as described in “Centrifugal
stage Maintenance”. If seal is damaged or broken it must be replaced as described in “Seals
maintenance”

© LNS FOX Instruction manual series WS (USA) pag. 18 of 28 - rev. 06-2014
13a) unlock latches b) unscrew main central knob c) remove Prefilter cartridge
6.2.1.a Emulsion version prefilter
d) unscrew two knobs e) lift top f) remove metal screen
g) Remove dirty filter set h) Place clean internal filter around
the structure (only for WS 250-1500-
2000)
i) wrap clean filter around the
structure
l) Reposition metal screen m) close down top n) tight 2 external knobs
6.2.1.b Oil version prefilter

© LNS FOX Instruction manual series WS (USA) pag. 19 of 28 - rev. 06-2014
o) unscrew two knobs p) lift top q) remove dirty filtering media
r) place upper seal ring s) place lower seal ring t) insert new filtering media
u) close down top v) tight two external knobs
w) clean bottom of the unit x) check drain slotes y) check seal
“integrity of the unit”
Make sure that the prefilter cartridge is correctly assembled once the filtering media is replaced. An
incorrect assembly of it can result in shorter lifetime of the filter and/or problems when closing the unit.
- Verify that the surface where the prefilter will be placed is completely clean.
- Insert prefilter and tight main knob.
- Verify that the top pf the prefilter and the seal of the impeller case are both clean
- Close the unit
14 a) Insert prefilter b) Tight main knob c) Close the unit
“Note”
Excessive resistance while closing down the unit can be a signal of an imperfect positioning of the
prefilter or of presence of residual materials underneath. If that is the case verify the cause, take care
of the problem and close the unit.

© LNS FOX Instruction manual series WS (USA) pag. 20 of 28 - rev. 06-2014
- Secure the draw latches to the upper part of the unit and rotate them until safety springs snap.
“integrity of the unit”
The length of the latch is adjustable and it is preset from factory in order to have correct load and
sealing. Do not change their setting in order to avoid possible problems.
6.2.2. Main filter (stage 3) maintenance for OIL and EMULSION versions
“Personal safety”
Never remove the main filter (stage 3) while the unit is on. Removal of main filter while the unit is
functioning can result in mechanical damages due to the rotation of the impeller.
The clogging status of the main filter is monitored by the pressure gauge located to the left of the control panel
box.
Replacement of the main filter is suggested when the pressure gauge indicates the following values:
Model
WS 170
WS 330
WS 700
WS 1020
WS 1250
Max Pressure at
6
0 Hz
380 Pa 450 Pa 800 Pa 850 Pa 900 Pa
“Safety of the people”
Do not remove the main filter cartridge (stage 3) while the unit is on. In order to avoid accidental
removal of this filter by unauthorized personnel secure the nut with a tool.
Removal of this filter, while the unit is on, can cause dangerous mechanical problems due to rotation
of the impeller
Replacement of the main filter :
2a check pressure gauge 2b remove upper cover (WS170-
300-1700 with magnetic catches) 2c remove upper cover (WS1020, WS1250 with Quarter Turn Fasteners)
2d unscrew nut 2e remove main filter cartridge 2f Replace the filter cartridge with a
new one and securing it with the nut
“Note”
The main cartridge (stage 3) is made of fibreglass and can not be regenerated.
6.3. Special maintenance
6.3.1. Centrifugal filtration (stage 2) maintenance
Normally the centrifugal stage does not require any maintenance. On some applications it may be necessary to
periodically clean the drainage ring and the relative holes according to the following procedure:
•Unlock the 2 draw latches hinges and lift the upper part of the unit
•Unscrew knob and remove filter
•Unscrew nuts securing impeller case/drainage ring
•Only if necessary proceed with the removal of the impeller (see cleaning of the impeller)