Lincoln arc welding and cutting
equipment is designed and built
with safety in mind. However,
your overall safety can be
increased by proper installation
... and thoughtful operation on
your part. DO NOT INSTALL,
OPERATE OR REPAIR THIS
EQUIPMENT WITHOUT READING THIS MANUAL AND THE
SAFETY PRECAUTIONS CONTAINED THROUGHOUT. And,
most importantly, think before
you act and be careful.
• World's Leader in Welding and Cutting Products •
• Sales and Service through Subsidiaries and Distributors Worldwide •
Page 2
i
SAFETY
i
WARNING
CALIFORNIA PROPOSITION 65 WARNINGS
Diesel engine exhaust and some of its constituents
are known to the State of California to cause cancer, birth defects, and other reproductive harm.
The Above For Diesel Engines
ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH.
KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING.
Read and understand the following safety highlights. For additional safety information, it is strongly recommended that you
purchase a copy of “Safety in Welding & Cutting - ANSI Standard Z49.1” from the American Welding Society, P.O. Box
351040, Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is available
from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.
BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE
PERFORMED ONLY BY QUALIFIED INDIVIDUALS.
The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects, or other reproductive harm.
The Above For Gasoline Engines
FOR ENGINE
powered equipment.
1.a. Turn the engine off before troubleshooting and maintenance
work unless the maintenance work requires it to be running.
1.c. Do not add the fuel near an open flame welding arc or when the engine is running. Stop
the engine and allow it to cool before refueling to prevent spilled fuel from vaporizing on
contact with hot engine parts and igniting. Do
not spill fuel when filling tank. If fuel is spilled,
wipe it up and do not start engine until fumes
have been eliminated.
1.d. Keep all equipment safety guards, covers and devices in position and in good repair.Keep hands, hair, clothing and tools
away from V-belts, gears, fans and all other moving parts
when starting, operating or repairing equipment.
1.e. In some cases it may be necessary to remove safety
guards to perform required maintenance. Remove
guards only when necessary and replace them when the
maintenance requiring their removal is complete.
Always use the greatest care when working near moving
parts.
1.f. Do not put your hands near the engine fan.
Do not attempt to override the governor or
idler by pushing on the throttle control rods
while the engine is running.
1.h. To avoid scalding, do not remove the
radiator pressure cap when the engine is
hot.
ELECTRIC AND
MAGNETIC FIELDS
may be dangerous
2.a. Electric current flowing through any conductor causes
localized Electric and Magnetic Fields (EMF). Welding
current creates EMF fields around welding cables and
welding machines
2.b. EMF fields may interfere with some pacemakers, and
welders having a pacemaker should consult their physician
before welding.
2.c. Exposure to EMF fields in welding may have other health
effects which are now not known.
2.d. All welders should use the following procedures in order to
minimize exposure to EMF fields from the welding circuit:
2.d.1.
Route the electrode and work cables together - Secure
them with tape when possible.
2.d.2. Never coil the electrode lead around your body.
2.d.3. Do not place your body between the electrode and
work cables. If the electrode cable is on your right
side, the work cable should also be on your right side.
1.g. To prevent accidentally starting gasoline engines while
turning the engine or welding generator during maintenance
work, disconnect the spark plug wires, distributor cap or
magneto wire as appropriate.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
2.d.4. Connect the work cable to the workpiece as close as
possible to the area being welded.
2.d.5. Do not work next to welding power source.
Page 3
ii
SAFETY
ii
ELECTRIC SHOCK can kill.
3.a. The electrode and work (or ground) circuits
are electrically “hot” when the welder is on.
Do not touch these “hot” parts with your bare
skin or wet clothing. Wear dry, hole-free
gloves to insulate hands.
3.b. Insulate yourself from work and ground using dry insulation.
Make certain the insulation is large enough to cover your full
area of physical contact with work and ground.
In addition to the normal safety precautions, if welding
must be performed under electrically hazardous
conditions (in damp locations or while wearing wet
clothing; on metal structures such as floors, gratings or
scaffolds; when in cramped positions such as sitting,
kneeling or lying, if there is a high risk of unavoidable or
accidental contact with the workpiece or ground) use
the following equipment:
• Semiautomatic DC Constant Voltage (Wire) Welder.
• DC Manual (Stick) Welder.
• AC Welder with Reduced Voltage Control.
3.c. In semiautomatic or automatic wire welding, the electrode,
electrode reel, welding head, nozzle or semiautomatic
welding gun are also electrically “hot”.
3.d. Always be sure the work cable makes a good electrical
connection with the metal being welded. The connection
should be as close as possible to the area being welded.
3.e. Ground the work or metal to be welded to a good electrical
(earth) ground.
3.f.
Maintain the electrode holder, work clamp, welding cable and
welding machine in good, safe operating condition. Replace
damaged insulation.
3.g. Never dip the electrode in water for cooling.
3.h. Never simultaneously touch electrically “hot” parts of
electrode holders connected to two welders because voltage
between the two can be the total of the open circuit voltage
of both welders.
3.i. When working above floor level, use a safety belt to protect
yourself from a fall should you get a shock.
3.j. Also see Items 6.c. and 8.
ARC RAYS can burn.
4.a. Use a shield with the proper filter and cover
plates to protect your eyes from sparks and
the rays of the arc when welding or observing
open arc welding. Headshield and filter lens
should conform to ANSI Z87. I standards.
4.b. Use suitable clothing made from durable flame-resistant
material to protect your skin and that of your helpers from
the arc rays.
4.c. Protect other nearby personnel with suitable, non-flammable
screening and/or warn them not to watch the arc nor expose
themselves to the arc rays or to hot spatter or metal.
FUMES AND GASES
can be dangerous.
5.a. Welding may produce fumes and gases
hazardous to health. Avoid breathing these
fumes and gases. When welding, keep
your head out of the fume. Use enough
ventilation and/or exhaust at the arc to keep
fumes and gases away from the breathing zone. When
welding with electrodes which require special
ventilation such as stainless or hard facing (see
instructions on container or MSDS) or on lead or
cadmium plated steel and other metals or coatings
which produce highly toxic fumes, keep exposure as
low as possible and within applicable OSHA PEL and
ACGIH TLV limits using local exhaust or mechanical ventilation. In confined spaces or in some circumstances,
outdoors, a respirator may be required. Additional precautions are also required when welding on galvanized
steel.
5. b. The operation of welding fume control equipment is affected
by various factors including proper use and positioning of the
equipment, maintenance of the equipment and the specific
welding procedure and application involved. Worker exposure level should be checked upon installation and periodically thereafter to be certain it is within applicable OSHA
PEL and ACGIH TLV limits.
5.c.
Do not weld in locations near chlorinated hydrocarbon
coming from degreasing, cleaning or spraying operations.
The heat and rays of the arc can react with solvent vapors
form phosgene, a highly toxic gas, and other irritating products.
vapors
to
5.d. Shielding gases used for arc welding can displace air and
cause injury or death. Always use enough ventilation,
especially in confined areas, to insure breathing air is safe.
5.e. Read and understand the manufacturerʼs instructions for this
equipment and the consumables to be used, including the
material safety data sheet (MSDS) and follow your
employerʼs safety practices. MSDS forms are available from
your welding distributor or from the manufacturer.
5.f. Also see item 1.b.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 4
iii
SAFETY
iii
WELDING and CUTTING
SPARKS can
cause fire or explosion.
6.a.
Remove fire hazards from the welding area.
If this is not possible, cover them to prevent
Remember that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas. Avoid welding near hydraulic lines. Have a fire
extinguisher readily available.
6.b. Where compressed gases are to be used at the job site,
special precautions should be used to prevent hazardous
situations. Refer to “Safety in Welding and Cutting” (ANSI
Standard Z49.1) and the operating information for the
equipment being used.
6.c. When not welding, make certain no part of the electrode
circuit is touching the work or ground. Accidental contact can
cause overheating and create a fire hazard.
6.d. Do not heat, cut or weld tanks, drums or containers until the
proper steps have been taken to insure that such procedures
will not cause flammable or toxic vapors from substances
inside. They can cause an explosion even
been “cleaned”. For information, purchase “Recommended
Safe Practices for the
Containers and Piping That Have Held Hazardous
Substances”, AWS F4.1 from the American Welding Society
(see address above).
6.e. Vent hollow castings or containers before heating, cutting or
welding. They may explode.
Sparks and spatter are thrown from the welding arc. Wear oil
6.f.
free protective garments such as leather gloves, heavy shirt,
cuffless trousers, high shoes and a cap over your hair. Wear
ear plugs when welding out of position or in confined places.
Always wear safety glasses with side shields when in a
welding area.
6.g. Connect the work cable to the work as close to the welding
area as practical. Work cables connected to the building
framework or other locations away from the welding area
increase the possibility of the welding current passing
through lifting chains, crane cables or other alternate circuits.
This can create fire hazards or overheat lifting chains or
cables until they fail.
6.h. Also see item 1.c.
the welding sparks from starting a fire.
though
they have
Preparation
for Welding and Cutting of
CYLINDER may explode
if damaged.
7.a. Use only compressed gas cylinders
containing the correct shielding gas for the
process used and properly operating
regulators designed for the gas and
pressure used. All hoses, fittings, etc. should be suitable for
the application and maintained in good condition.
7.b. Always keep cylinders in an upright position securely
chained to an undercarriage or fixed support.
7.c. Cylinders should be located:
• Away from areas where they may be struck or subjected to
physical damage.
• A safe distance from arc welding or cutting operations and
any other source of heat, sparks, or flame.
7.d. Never allow the electrode, electrode holder or any other
electrically “hot” parts to touch a cylinder.
7.e. Keep your head and face away from the cylinder valve outlet
when opening the cylinder valve.
7.f. Valve protection caps should always be in place and hand
tight except when the cylinder is in use or connected for
use.
7.g. Read and follow the instructions on compressed gas
cylinders, associated equipment, and CGA publication P-l,
“Precautions for Safe Handling of Compressed Gases in
Cylinders,” available from the Compressed Gas Association
1235 Jefferson Davis Highway, Arlington, VA 22202.
FOR ELECTRICALLY
powered equipment.
8.a. Turn off input power using the disconnect
switch at the fuse box before working on
the equipment.
8.b. Install equipment in accordance with the U.S. National
Electrical Code, all local codes and the manufacturerʼs
recommendations.
8.c. Ground the equipment in accordance with the U.S. National
Electrical Code and the manufacturerʼs recommendations.
6.I. Read and follow NFPA 51B “ Standard for Fire Prevention
During Welding, Cutting and Other Hot Work”, available from
NFPA, 1 Batterymarch Park, PO box 9101, Quincy, Ma
022690-9101.
6.j. Do not use a welding power source for pipe thawing.
Refer to http://www.lincolnelectric.com/safety for additional safety information.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 5
iv
SAFETY
iv
PRÉCAUTIONS DE SÛRETÉ
Pour votre propre protection lire et observer toutes les instructions
et les précautions de sûreté specifiques qui parraissent dans ce
manuel aussi bien que les précautions de sûreté générales suivantes:
Sûreté Pour Soudage A LʼArc
1. Protegez-vous contre la secousse électrique:
a. Les circuits à lʼélectrode et à la piéce sont sous tension
quand la machine à souder est en marche. Eviter toujours
tout contact entre les parties sous tension et la peau nue
ou les vétements mouillés. Porter des gants secs et sans
trous pour isoler les mains.
b. Faire trés attention de bien sʼisoler de la masse quand on
soude dans des endroits humides, ou sur un plancher metallique ou des grilles metalliques, principalement dans
les positions assis ou couché pour lesquelles une grande
partie du corps peut être en contact avec la masse.
c. Maintenir le porte-électrode, la pince de masse, le câble de
soudage et la machine à souder en bon et sûr état defonctionnement.
d.Ne jamais plonger le porte-électrode dans lʼeau pour le
refroidir.
e. Ne jamais toucher simultanément les parties sous tension
des porte-électrodes connectés à deux machines à souder
parce que la tension entre les deux pinces peut être le total
de la tension à vide des deux machines.
f. Si on utilise la machine à souder comme une source de
courant pour soudage semi-automatique, ces precautions
pour le porte-électrode sʼapplicuent aussi au pistolet de
soudage.
2. Dans le cas de travail au dessus du niveau du sol, se protéger
contre les chutes dans le cas ou on recoit un choc. Ne jamais
enrouler le câble-électrode autour de nʼimporte quelle partie du
corps.
5. Toujours porter des lunettes de sécurité dans la zone de
soudage. Utiliser des lunettes avec écrans lateraux dans les
zones où lʼon pique le laitier.
6. Eloigner les matériaux inflammables ou les recouvrir afin de
prévenir tout risque dʼincendie dû aux étincelles.
7. Quand on ne soude pas, poser la pince à une endroit isolé de
la masse. Un court-circuit accidental peut provoquer un
échauffement et un risque dʼincendie.
8. Sʼassurer que la masse est connectée le plus prés possible de
la zone de travail quʼil est pratique de le faire. Si on place la
masse sur la charpente de la construction ou dʼautres endroits
éloignés de la zone de travail, on augmente le risque de voir
passer le courant de soudage par les chaines de levage,
câbles de grue, ou autres circuits. Cela peut provoquer des
risques dʼincendie ou dʼechauffement des chaines et des
câbles jusquʼà ce quʼils se rompent.
9. Assurer une ventilation suffisante dans la zone de soudage.
Ceci est particuliérement important pour le soudage de tôles
galvanisées plombées, ou cadmiées ou tout autre métal qui
produit des fumeés toxiques.
10. Ne pas souder en présence de vapeurs de chlore provenant
dʼopérations de dégraissage, nettoyage ou pistolage. La
chaleur ou les rayons de lʼarc peuvent réagir avec les vapeurs
du solvant pour produire du phosgéne (gas fortement toxique)
ou autres produits irritants.
11. Pour obtenir de plus amples renseignements sur la sûreté, voir
le code “Code for safety in welding and cutting” CSA Standard
W 117.2-1974.
PRÉCAUTIONS DE SÛRETÉ POUR
3. Un coup dʼarc peut être plus sévère quʼun coup de soliel, donc:
a. Utiliser un bon masque avec un verre filtrant approprié ainsi
quʼun verre blanc afin de se protéger les yeux du rayonnement de lʼarc et des projections quand on soude ou
quand on regarde lʼarc.
b. Porter des vêtements convenables afin de protéger la peau
de soudeur et des aides contre le rayonnement de lʻarc.
c. Protéger lʼautre personnel travaillant à proximité au
soudage à lʼaide dʼécrans appropriés et non-inflammables.
4. Des gouttes de laitier en fusion sont émises de lʼarc de
soudage. Se protéger avec des vêtements de protection libres
de lʼhuile, tels que les gants en cuir, chemise épaisse, pantalons sans revers, et chaussures montantes.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
LES MACHINES À SOUDER À
TRANSFORMATEUR ET À
REDRESSEUR
1. Relier à la terre le chassis du poste conformement au code de
lʼélectricité et aux recommendations du fabricant. Le dispositif
de montage ou la piece à souder doit être branché à une
bonne mise à la terre.
2. Autant que possible, Iʼinstallation et lʼentretien du poste seront
effectués par un électricien qualifié.
3. Avant de faires des travaux à lʼinterieur de poste, la debrancher à lʼinterrupteur à la boite de fusibles.
4. Garder tous les couvercles et dispositifs de sûreté à leur place.
Page 6
Thank You
vv
for selecting a QUALITY product by Lincoln Electric. We want you
to take pride in operating this Lincoln Electric Company product •••
as much pride as we have in bringing this product to you!
The business of The Lincoln Electric Company is manufacturing and selling high quality welding equipment, consumables, and cutting equipment. Our challenge is to meet the needs of our customers and to exceed their expectations. On occasion, purchasers may ask Lincoln Electric
for advice or information about their use of our products. We respond to our customers based on the best information in our possession at that
time. Lincoln Electric is not in a position to warrant or guarantee such advice, and assumes no liability, with respect to such information or
advice. We expressly disclaim any warranty of any kind, including any warranty of fitness for any customerʼs particular purpose, with respect
to such information or advice. As a matter of practical consideration, we also cannot assume any responsibility for updating or correcting any
such information or advice once it has been given, nor does the provision of information or advice create, expand or alter any warranty with
respect to the sale of our products.
Lincoln Electric is a responsive manufacturer, but the selection and use of specific products sold by Lincoln Electric is solely within the control
of, and remains the sole responsibility of the customer. Many variables beyond the control of Lincoln Electric affect the results obtained in
applying these types of fabrication methods and service requirements.
Subject to Change – This information is accurate to the best of our knowledge at the time of printing. Please refer to www.lincolnelectric.com
for any updated information.
CUSTOMER ASSISTANCE POLICY
Please Examine Carton and Equipment For Damage Immediately
When this equipment is shipped, title passes to the purchaser upon receipt by the carrier. Consequently, Claims
for material damaged in shipment must be made by the purchaser against the transportation company at the time
the shipment is received.
Please record your equipment identification information below for future reference. This information can be found
on your machine nameplate.
Model Number ___________________________________________________________________________
Code Number or Date Code_________________________________________________________________
Serial Number____________________________________________________________________________
Date Purchased___________________________________________________________________________
Where Purchased_________________________________________________________________________
Whenever you request replacement parts or information on this equipment, always supply the information you
have recorded above. The code number is especially important when identifying the correct replacement parts.
On-Line Product Registration
- Register your machine with Lincoln Electric either via fax or over the Internet.
• For faxing: Complete the form on the back of the warranty statement included in the literature packet
accompanying this machine and fax the form per the instructions printed on it.
• For On-Line Registration: Go to our
Your Product”. Please complete the form and submit your registration.
Read this Operators Manual completely before attempting to use this equipment. Save this manual and keep it
handy for quick reference. Pay particular attention to the safety instructions we have provided for your protection.
The level of seriousness to be applied to each is explained below:
WEB SITE at www.lincolnelectric.com. Choose “Support” and then “Register
WARNING
This statement appears where the information must be followed exactly to avoid serious personal injury or loss of life.
CAUTION
This statement appears where the information must be followed to avoid minor personal injury or damage to this equipment.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 7
TABLE OF CONTENTS
Page
Installation .......................................................................................................Section A
ø 8 inch (203 mm)ø 8 inch (203 mm)ø 8 inch (203 mm)ø 8 inch (203 mm)
355-940 CFM (600-
1,600 m3/h)
355-940 CFM (600-
1,600 m3/h)
355-940 CFM (600-
1,600 m3/h)
355-940 CFM (600-
1,600 m3/h)
Not ApplicableNot ApplicableIntegratedIntegrated
FIGURE A.1
A
B
16 ft
(4.9 m)
12 ft
(3.7 m)
8 ft
(2.4 m)
4 ft
(1.2 m)
0 ft
(0 m)
16 ft
(4.9 m)
FIGURE A.2
12 ft
(3.7 m)
(2.4 m)
8 ft
4 ft
(1.2 m)
C
FIGURE A.3
7.2
B
A
0 ft
(0 m)
Y
6.4
5.6
4.8
4.0
3.2
2.4
1.6
0.8
0
0120 240 360 480 600 720 840 960 1080 1200
•X = Airflow (CFM)
LFA 4.1
LFA 3.1
X
•Y = Static pressure (in. WG)
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 10
A-3
READ ENTIRE INSTALLATION SECTION BEFORE
STARTING INSTALLATION.
INSTALLATION
SAFETY PRECAUTIONS
WARNING
ELECTRIC SHOCK can kill.
• Only qualified personnel should perform this installation.
• Turn the input power OFF and unplug
the machine from the receptacle before
working on this equipment.
Insulate yourself from the work and ground.
•
• Always connect the
grounded according to the National Electrical Code
and local codes.
GENERAL DESCRIPTION
This instruction manual describes two base units and
four types of extraction arms & one hose:
- K1741-1 Mobiflex 400-MS Base Unit (mobile filter
unit with self-cleaning filter cartridge - filter class
MERV 11 (untreated); MERV 15 (treated)
- K1741-2 Mobiflex 400-MS/HE Base Unit (mobile filter
unit with high efficiency self-cleaning filter cartridge filter class MERV 16)
machine
to a power supply
A-3
The Mobiflex 400-MS is a portable unit suitable to be
used in relatively small facilities or near sources of pollution without a fixed location.
The Mobiflex 400-MS Base Unit with Flexible
Extraction Arm is used for extracting and filtering fume
which is released during the most common welding
processes, such as:
• MIG/MAG solid wire (GMAW)
• MIG/MAG flux cored wire (FCAW)
• TIG (GTAW) welding
• Stick welding (MMA or SMAW)
• Autogeneous welding
The Mobiflex 400-MS is designed for intermittent or
continuous welding applications as indicated above.
The Mobiflex 400-MS filter is recommended for annual
consumable use of approximately:
• 6,000 lbs (2,750 kg) GMAW or FCAW or GTAW
• 4,000 lbs (1,800 kg) MMA or SMAW or autogeneous
Variables such as coatings (e.g. oil), base material,
weld process, humidity and procedures can affect filter
life and performance.
- K2633-1 LFA 3.1 Mobile Manual (10 ft. extraction
arm)
- K2633-3 LFA 4.1 Mobile Manual (13 ft. extraction
arm)
- K2633-2 LFA 3.1 Mobile Automatic (10 ft. extraction
arm with integrated Lamp & Arc Sensor Kit)
- K2633-4 LFA 4.1 Mobile Automatic (13 ft. extraction
arm with integrated Lamp & Arc Sensor Kit)
- K1668-3 Hose & Hood Set
MOBIFLEX 400-MS BASE UNIT
The K1741-1 Mobiflex 400-MS Base Unit is a mobile
filter unit with integrated fan that provides extraction
and filtration for use with a flexible extraction arm or
optional hose.
The Mobiflex 400-MS Base Unit features a steel mesh
prefilter and a round cellulose LongLife filter cartridge.
This LongLife filter cartridge is provided with a precoat
(ExtraCoat) to extend the lifespan and increase initial
operating efficiency of the filter.
The Mobiflex 400-MS Base Unit is provided with a
RotaPulse system for automatic cleaning of the
LongLife filter cartridge.
MOBIFLEX 400-MS/HE BASE UNIT
The K1741-2 Mobiflex 400-MS/HE Base Unit is a
mobile filter unit with integrated fan that provides
extraction and filtration for use with a flexible extraction
arm or optional hose.
The Mobiflex 400-MS/HE Base Unit features a steel
mesh prefilter and a high efficiency round
cellulose/polyester blend LongLife filter cartridge.
The Mobiflex 400-MS/HE Base Unit is provided with a
RotaPulse system for automatic cleaning of the
LongLife filter cartridge.
The Mobiflex 400-MS/HE is a portable unit suitable to
be used in relatively small facilities or near sources of
pollution without a fixed location.
The Mobiflex 400-MS/HE Base Unit with Flexible
Extraction Arm is used for extracting and filtering fume
which is released during the most common welding
processes, such as:
• MIG/MAG solid wire (GMAW)
• MIG/MAG flux cored wire (FCAW)
• TIG (GTAW) welding
• Stick welding (MMA or SMAW)
• Autogeneous welding
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 11
A-4
INSTALLATION
The Mobiflex 400-MS/HE is designed for intermittent or
continuous welding applications as indicated above.
A-4
COMPONENTS
The Mobiflex 400-MS/HE filter is recommended for
annual consumable use of approximately:
• 550 lbs (250 kg) GMAW or FCAW or GTAW
• 385 lbs (175 kg) MMA or SMAW or autogeneous
Variables such as coatings (e.g. oil), base material,
weld process, humidity and procedures can affect filter
life and performance.
LFA 3.1/4.1 MOBILE
MANUAL/AUTOMATIC
The LFA 3.1/4.1 Mobile Manual and Mobile Automatic
Extraction Arms are flexible fume extraction arms with
a 360° rotatable hood. Incorporated into the arms hood
is a throttle valve that can be fully opened, partially
opened or completely closed to control airflow at hood
opening. The hood features an airflow focus vane,
which directs the air into the hood.
The armsʼ balance system increases its durability and
stability. As soon as the arms are raised, they are free
to move in any direction. Once the arms are positioned, they are fixed into place. This makes repositioning the arms simple, easy and effortless.
The extraction arms are made of solid, lightweight, 8
inch (203 mm) diameter dent and scratch resistant
tubes. They are provided with a spring balance system
for ultra-light, user friendly positioning of the arms.
FIGURE A.4
MOBIFLEX 400-MS(/HE) BASE UNIT
The Mobiflex 400-MS(/HE) Base Unit consists of the
following components (See Figure A.5):
A. Control panel
B. Handles
C. Connection for extraction arm
D. Filter cover with outlet grid
E. Base swivel mount
F. Mobiflex 400-MS: LongLife filter cartridge FCC 30;
or Mobiflex 400-MS/HE: LongLife filter cartridge
FCC 30-HE
G. Base
H. Transport wheels
I. Dust tray
J. RotaPulse automatic filter cleaning system
K. Prefilter
L. Swivel casters (right one with lock)
M. Flexible hose
N. Fan housing
O. Extraction fan
P. Pressure reducing valve
Q. Compressed air connection ¼ inch
FIGURE A.5
The K2633-2 and K2633-4 LFA 3.1/4.1 Mobile
Automatic arms contains an integrated Lamp & Arc
Sensor Kit in the hood. The 35W/24V halogen lamp
provides additional light to the workpiece. With the use
of a delayed arc sensor, the extraction fan will operate
automatically. The automatic start/stop utilizes a 20
second auto stop to help conserve energy and reduce
noise level.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
B
Q
EACD
M
F
I
HGJKLNOP
Page 12
A-5
INSTALLATION
LFA 3.1/4.1 MOBILE
MANUAL/AUTOMATIC
The LFA 3.1/4.1 Mobile Manual/Automatic extraction
arm consists of the following components (See Figure
A.6):
A. Hinge fan side
B. Arm section (fan side)
C. Middle hinge with hose running guard
D. Flexible hose
E. Connection wire arm (K2633-2, K2633-4 only)
F. Extraction hood
A-5
LFA 3.1/4.1 Mobile Manual/Automatic Extraction
Arm
• (1) LFA 3.1/4.1 Extraction Arm
• (2) Bolt M8
• (2) Self-locking Nut M8
• (2) Washer
If parts are missing or damaged, contact Lincoln
Electric Automation 888-935-3878.
INSTALLATION
MOBIFLEX 400-MS(/HE) BASE UNIT
G. Lamp & Arc Sensor (K2633-2, K2633-4 only)
H. Throttle valve
I. Hood hinge with rubber protection cover
J. Flexible hose
K. Arm section (hood side)
FIGURE A.6
B
A
C
D
E
F
The base swivel mount on top of the machine contains
two tie wraps. A split pin has been attached to the
lower one.
Installation Steps:
See Figure A.7 for steps 1-6
1. Cut through the lower tie wrap (A) to release the
split pin.
ATTENTION
Make sure the tie wrap and the split
pin do not fall into the fan. If it falls
into the fan it must be removed
prior to turning the base unit on.
2. Lift the post of the base swivel mount by the upper
tie wrap (B). (See Figure A.7).
3. Put the split pin through the lowest hole in the post
(C) and bend it around. (See Figure A.7).
4. Remove the upper tie wrap (D) and let down the
post. (See Figure A.7).
5. Remove clamping pin from under rubber seal of the
base swivel mount.
6. Fold down the rubber seal and take off the red plastic ring.
Page 13
A-6
FIGURE A.7
A
INSTALLATION
A-6
FIGURE A.9
A
B
D
C
See Figure A.8 for step 7-8
7. Insert the clamping pin (A) through the hole in the
post above the split pin.
8. Position the red plastic ring (B) and place the
clamping pin into the ridges (C). Rotating the red
plastic ring may be necessary.
FIGURE A.8
A
C
B
LFA 3.1/4.1 MOBILE MANUAL
The supply cable inside the base swivel mount of the
Mobiflex 400-MS/(/HE) Base Unit is not used when
mounting a K2633-1 or K2633-3 LFA 3.1/4.1 Mobile
Manual arm. Do not remove jumper.
ATTENTION
Do not remove the yellow tape
attaching both arm sections.
1. Mount the extraction arm LFA 3.1/4.1 Mobile
Automatic (A) on the post (B) using the two bolts
M8 and two selflocking nuts M8 with washers.
2. Remove the wire bridge from the supply cable
inside the base swivel mount.
If the extraction hood falls on its own:
(See Figure A.12)
• Cut the tie wrap of the rubber protection cover which
is applied over the hood hinge.
• Pull down the protection cover.
• Turn bolt (A) in the hood hinge clockwise to tighten
extraction hood.
• Replace the protection cover and secure it with the
spare tie wrap supplied.
If the extraction hood does not stay to a horizontal position (left/right):
(See Figure A.12)
• Cut the tie wrap of the rubber protection cover which
is applied over the hood hinge.
• Pull down the protection cover.
• Turn bolt (B) in the hood hinge clockwise to tighten
horizontal movement.
• Replace the protection cover and secure it with the
spare tie wrap supplied.
FIGURE A.12
3. Connect the supply cables of the Mobiflex 400-MS(/
HE) Base Unit and the extraction arm.
4. Remove the yellow tape from both arm sections.
5. Turn the extraction arm 359° and check whether
the supply cable is long enough. If necessary, pull
the supply cable of the Mobiflex 400-MS(/HE) Base
Unit to a sufficient length.
BALANCE CHECK
The extraction arms have been pre-balanced in the
factory for optimal balance and positioning. However,
they sometimes need adjustment. To check and adjust
the balance system, proceed as follows.
See Figure A.11
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
AB
Page 15
A-8
INSTALLATION
1. Bring the arm (including extraction hood) to a horizontal position The arm should stay in this position.
See Figure A.13.
FIGURE A.13
A-8
LFA 3.1/4.1 MOBILE
MANUAL/AUTOMATIC
A hose running guard is attached to the middle hinge
of the extraction arm by a piece of tape.
AB
If the entire arm falls on its own:
(See Figure A.13 items A+B)
• Tighten bolt (A) in the hinge fan side to increase
spring tension. Ensure spring does not turn as you
tighten. See Figure A.14.
FIGURE A.14
A
See Figure A.16 for steps 1-9
1. Take the hose running guard (A) and snap it into
place at the middle hinge (B).
2. Fold back 2/3 of both rubber seals.
3. Remove the wrap from the flexible hose.
4. Place the flexible hose over both arm sections. To
secure the hose, at least one metal ring of the hose
should be applied over the ridges at each arm section.
5. Fold back the rubber seals and place them over the
hose. The rubber seal should cover the arm section
0.5-1 inch.
FIGURE A.16
A
B
If the hood section of the arm falls on its own:
(See Figure A.13 item B)
• Tighten bolt (A) in middle hinge to increase spring (B)
tension. Ensure spring does not turn as you tighten.
See Figure A.15.
FIGURE A.15
A
B
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Now mount the flexible hose at the hood side.
6. Fold back 2/3 of both rubber seals.
7. Remove the wrap from the flexible hose hood side.
8. Place the flexible hose over the hood and the arm
section hood side. To secure the hose, at least one
metal ring of the hose should be applied over the
ridges.
9. Fold back the rubber seals and place them over the
hose. The rubber seals should cover the hood and
the arm section 0.5-1 inch.
Page 16
B-1
OPERATION
B-1
SAFETY PRECAUTIONS
WARNING
FUMES and GASES can be
dangerous.
• Use in open, well ventilated areas
or vent exhaust outside.
The operation of welding fume control equipment
is affected by various factors including proper use
and positioning of the equipment, maintenance of
the equipment and the specific welding procedure
and application involved. Worker exposure level
should be checked upon installation and periodically thereafter to be certain it is within applicable
federal, state and/or local regulations and guidelines (i.e. OSHA PEL and ACGIH TLV limits in the
U.S.).
Only use the product for the welding processes described in the
General Description. Avoid using
the product for extracting and/or filtering fumes and gases which are
released during the following (welding) processes:
• oxy-fuel cutting
• aluminum laser cutting
• oil-treated metal
• arc-air gouging
• oil mist
• paint mist
• heavy oil mist in welding fume
• hot gases (more than 40°C/100°F continuously)
• aggressive gases (e.g. from acids)
• plasma cutting
• grinding aluminum and magnesium
• flame spraying
• extraction of cement, saw dust, wood dust etc.
• sucking cigarettes, cigars, oiled tissues and
other burning particles, objects and acids
• in all situations where explosions can occur
(This list is not comprehensive.)
WARNING
Avoid using the product for filtering dust particles which are
released when welding surfaces
treated with primer.
Never use the product without prefilter and LongLife filter cartridge.
The product has been designed exclusively for extracting and filtering fume which is released during common
weld processes. Using the product for other purposes
is considered contrary to its intended use. The manufacturer accepts no liability for any damage resulting
from such use.
Only use the product in mechanically sound condition
in accordance with its intended use and the instructions set forth in the user manual.
MODIFICATIONS
Modifications of this product, other than those specified in this manual, are not allowed. Any unauthorized
modification will void the product warranty.
GENERAL SAFETY
The manufacturer does not accept any liability for damage to the product caused by a failure to follow the
safety and other instructions in this manual, modifications made to equipment or by negligence during
installation, use, maintenance and repair of the product
mentioned on the cover of this document and any corresponding accessories.
Specific working conditions or used accessories may
require additional safety instructions. Immediately contact your supplier if you detect a potential hazard when
using the product.
If the product is used in above situations it could
result in potential fire hazard, non-compliance with
local regulations and reduction in product performance and life.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 17
B-2
OPERATION
GENERAL DESCRIPTION
This instruction manual describes two base units and
four types of extraction arms & one hose:
- K1741-1 Mobiflex 400-MS Base Unit (mobile filter
unit with self-cleaning filter cartridge - filter class
MERV 11 (untreated); MERV 15 (treated)
- K1741-2 Mobiflex 400-MS/HE Base Unit (mobile filter
unit with high efficiency self-cleaning filter cartridge filter class MERV 16)
- K2633-1 LFA 3.1 Mobile Manual (10 ft. extraction
arm)
- K2633-3 LFA 4.1 Mobile Manual (13 ft. extraction
arm)
- K2633-2 LFA 3.1 Mobile Automatic (10 ft. extraction
arm with integrated Lamp & Arc Sensor Kit)
- K2633-4 LFA 4.1 Mobile Automatic (13 ft. extraction
arm with integrated Lamp & Arc Sensor Kit)
- K1668-3 Hose & Hood Set
MOBIFLEX 400-MS BASE UNIT
The K1741-1 Mobiflex 400-MS Base Unit is a mobile
filter unit with integrated fan that provides extraction
and filtration for use with a flexible extraction arm or
optional hose.
The Mobiflex 400-MS Base Unit features a steel mesh
prefilter and a round cellulose LongLife filter cartridge.
This LongLife filter cartridge is provided with a precoat
(ExtraCoat) to extend the lifespan and increase initial
operating efficiency of the filter.
The Mobiflex 400-MS Base Unit is provided with a
RotaPulse system for automatic cleaning of the
LongLife filter cartridge.
The Mobiflex 400-MS is a portable unit suitable to be
used in relatively small facilities or near sources of pollution without a fixed location.
The Mobiflex 400-MS Base Unit with Flexible
Extraction Arm is used for extracting and filtering fume
which is released during the most common welding
processes, such as:
• MIG/MAG solid wire (GMAW)
• MIG/MAG flux cored wire (FCAW)
• TIG (GTAW) welding
B-2
The Mobiflex 400-MS filter is recommended for annual
consumable use of approximately:
• 6,000 lbs (2,750 kg) GMAW or FCAW or GTAW
• 4,000 lbs (1,800 kg) MMA or SMAW or autogeneous
Variables such as coatings (e.g. oil), base material,
weld process, humidity and procedures can affect filter
life and performance.
MOBIFLEX 400-MS/HE BASE UNIT
The K1741-2 Mobiflex 400-MS/HE Base Unit is a
mobile filter unit with integrated fan that provides
extraction and filtration for use with a flexible extraction
arm or optional hose.
The Mobiflex 400-MS/HE Base Unit features a steel
mesh prefilter and a high efficiency round
cellulose/polyester blend LongLife filter cartridge.
The Mobiflex 400-MS/HE Base Unit is provided with a
RotaPulse system for automatic cleaning of the
LongLife filter cartridge.
The Mobiflex 400-MS/HE is a portable unit suitable to
be used in relatively small facilities or near sources of
pollution without a fixed location.
The Mobiflex 400-MS/HE Base Unit with Flexible
Extraction Arm is used for extracting and filtering fume
which is released during the most common welding
processes, such as:
• MIG/MAG solid wire (GMAW)
• MIG/MAG flux cored wire (FCAW)
• TIG (GTAW) welding
• Stick welding (MMA or SMAW)
• Autogeneous welding
The Mobiflex 400-MS/HE is designed for intermittent or
continuous welding applications as indicated above.
The Mobiflex 400-MS/HE filter is recommended for
annual consumable use of approximately:
• 550 lbs (250 kg) GMAW or FCAW or GTAW
• 385 lbs (175 kg) MMA or SMAW or autogeneous
Variables such as coatings (e.g. oil), base material,
weld process, humidity and procedures can affect filter
life and performance.
• Stick welding (MMA or SMAW)
• Autogeneous welding
The Mobiflex 400-MS is designed for intermittent or
continuous welding applications as indicated above.
MOBIFLEX 400-MS(/HE) BASE UNIT + LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 18
B-3
OPERATION
B-3
LFA 3.1/4.1 MOBILE
MANUAL/AUTOMATIC
The LFA 3.1/4.1 Mobile Manual and Mobile Automatic
Extraction Arms are flexible fume extraction arms with
a 360° rotatable hood. Incorporated into the arms hood
is a throttle valve that can be fully opened, partially
opened or completely closed to control airflow at hood
opening. The hood features an airflow focus vane,
which directs the air into the hood.
The armsʼ balance system increases its durability and
stability. As soon as the arms are raised, they are free
to move in any direction. Once the arms are positioned, they are fixed into place. This makes repositioning the arms simple, easy and effortless.
The extraction arms are made of solid, lightweight, 8
inch (203 mm) diameter dent and scratch resistant
tubes. They are provided with a spring balance system
for ultra-light, user friendly positioning of the arms.
FIGURE B.1
OPERATION
The air which contains welding fume is captured,
extracted and filtered, before being recirculated back
into the work environment. First, the welding fume is
extracted through an adjustable fume extraction arm
by the internal extraction fan.
Second, as the welding fume enters the Base Unit, it
passes through the prefilter. The prefilter separates
larger particles, debris and most sparks prior to the
welding fume entering the LongLife filter. Third, the air
passes from the outside through the LongLife filter cartridge. Fourth, after passing through the LongLife filter,
the filtered air exits the Mobiflex 400-MS(/HE) Base
Unit via the outlet grid at top of filter housing.
During use, an electronic pressure differential system
measures the static air pressure as it enters and exits
the filter cartridge. If the air pressure entering the filter
unit is greater than the air pressure exiting the filter
unit, the electronic circuit signals the internal cleaning
system to clean the filter cartridge. Compressed air
from the internal tank releases through multiple airjets
to clean one section of the filter cartridge at each air
burst. A complete cleaning cycle can be activated by
depressing a manual switch on the front of the control
panel. The particulate is blown off the filter cartridge
into a dust tray.
The K2633-2 and K2633-4 LFA 3.1/4.1 Mobile
Automatic arms contains an integrated Lamp & Arc
Sensor Kit in the hood. The 35W/24V halogen lamp
provides additional light to the workpiece. With the use
of a delayed arc sensor, the extraction fan will operate
automatically. The automatic start/stop utilizes a 20
second auto stop to help conserve energy and reduce
noise level.
PRODUCT COMBINATIONS
In order to operate the Mobiflex 400-MS(/HE) Base
Unit, selection of following product is required:
• K2633-1 (1) LFA 3.1 Mobile Manual (10 ft. extraction
arm); or
• K2633-3 (1) LFA 4.1 Mobile Manual (13 ft. extraction
arm); or
• K2633-2 (1) LFA 3.1 Mobile Automatic (10 ft. extraction arm with integrated Lamp & Arc Sensor Kit); or
ATTENTION
Never use the Mobiflex 400-MS(/HE)
Base Unit without extraction arm or
Hose and Hood Set.
Worker exposure level should be
checked upon installation and periodically thereafter to be certain it is
within applicable federal, state
and/or local regulations and guidelines (i.e. OSHA PEL and ACGIH
TLV limits in the U.S.).
• K2633-4 (1) LFA 4.1 Mobile Automatic (13 ft. extraction arm with integrated Lamp & Arc Sensor Kit)
• K1668-3 (1) Hose and Hood Set instead of extraction
arm
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 19
B-4
OPERATION
The control panel contains the following controls:
See Figure B.2
A. Power switch OFF
B. Power switch ON
C. FAN ON/OFF switch
D. Control light (orange)
- “CLEANING”: the control light is on indicating that
the machine is busy performing the (self-)cleaning process.
- “ALARM”: the control light blinks indicating that
the filter is saturated and cannot be cleaned sufficiently in the automatic cleaning mode.
E. Filter cleaning ON/OFF - RESET button for off-line
cleaning and reset.
FIGURE B.2
B-4
WARNING
The position of the hood should be
approximately 6-12 inch (15-30 cm)
in front of the welding arc.
Performance depends on factors
such as part vs. operator and weld
position, airflow (CFM and velocity
level), ambient conditions and
maintenance. Reposition hood as
needed to maintain efficient fume
capture.
• Using the handle (See Figure B.3 item A), position
the hood of the extraction arm in the desired position
at approximately 6-12 inch (15-30 cm) from the
ffo/no gninaelcffo/no naf
source of fume.
• Open the throttle valve (See Figure B.3 item B).
• Press the power switch ON (See Figure B.2 item B)
to turn power to the unit on.
• Turn on the FAN ON/OFF switch (See Figure B.2
item C) to start the machine.
• Start welding.
• Turn off the FAN ON/OFF switch approximately 20
seconds after finishing welding.
• Press the power switch OFF (See Figure B.2 item A)
to interrupt power supply.
FIGURE B.3
• Make sure the FAN ON/OFF switch (See Figure B.2
item C) is in the OFF position.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
A
B
Page 20
B-5
OPERATION
MOBIFLEX 400-MS(/HE) & LFA 3.1/4.1
MOBILE AUTOMATIC
See Figure B.2 and Figure B.4
• Press the power switch ON (See Figure B.2 item B)
to turn power to the unit.
• Using the handle (See Figure B.4 item A), position
the hood of the extraction arm in the desired position
at approximately 6-12 inch (15-30 cm) from the
source of fume.
• If desired: turn on the halogen lamp using on/off
switch (See Figure B.4 item C).
• Open the throttle valve (See Figure B.4 item B).
• Start welding.
FIGURE B.4
B
B-5
I
O
C
D
A
Due to the built-in Arc Sensor, the machine will start
automatically. After finishing welding, the machine will
automatically stop after approximately 20 seconds.
• Press the power switch OFF (See Figure B.2 item A)
to interrupt power supply.
MOBIFLEX 400-MS(/HE) & LFA 3.1/4.1
MOBILE AUTOMATIC (MANUAL START)
Manual start of the Lamp & Arc Sensor Kit is recommended for TIG welding or in case the Arc Sensor is
unable to detect the arc due to weld position.
* UV from TIG welding is less than other weld process-
es resulting in arc sensor perhaps not detecting weld.
See Figure B.2 and Figure B.4
• Press the power switch ON (See Figure B.2 item B)
to turn power to the unit on.
• Using the handle (See Figure B.4 item A), position
the hood of the extraction arm in the desired position
at approximately 6-12 inch (15-30 cm) from the
source of fume.
• If desired: turn on the halogen lamp using on/off
switch (See Figure B.4 item C).
• Open the throttle valve (See Figure B.4 item B).
• Turn on the machine using the on/off switch (See
Figure B.4 item D).
• Start welding.
• Turn off the machine approximately 20 seconds after
finishing welding using the on/off switch (See Figure
B.4 item D).
• Press the power switch OFF (See Figure B.2 item A)
to interrupt power supply.
ATTENTION
Due to the parallel connection,
extraction fan on / off can be
arranged in three different ways:
• Automatically by Arc Sensor
• Manually by on/off switch at the
hood of the extraction arm
• Manually by push button switch fan on/off on the
machine
During normal operation (i.e. with a clean, non-saturated filter cartridge), the Mobiflex 400-MS(/HE) functions
automatically. As soon as a minimum airflow has been
reached as a result of the clogging, the pressure difference switch activates the RotaPulse compressed air
cleaning system which subsequently cleans the filter
using controlled jets of compressed air. The particulate
then falls into the dust tray.
During the automatic cleaning process the control light
(See Figure B.2 item D) is on (“CLEANING”). The
cleaning system stops when the airflow is sufficient
again.
This procedure is called online cleaning.
When no welding takes place for the automatic cleaning process, the fan will start running for 30 seconds
after every four compressed airjets to check the pressure difference. This happens 15 times maximum.
When the airflow hasnʼt reached the required airflow
rate after 60 compressed airjets, the control light will
change into the “ALARM” mode.
• In this case, proceed with Control light: ALARM procedure.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 21
B-6
OPERATION
B-6
CONTROL LIGHT: ALARM
When the control light (See Figure B.2 item D) blinks
(“ALARM”), proceed as follows.
• Stop welding.
• Press filter cleaning ON/OFF - RESET button (SeeFigure B.2 item E) to stop the control light from blinking.
• Make sure the FAN ON/OFF switch (See Figure B.2item C) is off.
• Close throttle valve in extraction hood.
• Press filter cleaning ON/OFF - RESET button again
(See Figure B.2 item E) to start off-line cleaning.
During the off-line cleaning cycle the entire filter cartridge is cleaned systematically by compressed airjets.
This cycle takes approximately one hour.
ATTENTION
Do not use the machine during the
off-line cleaning cycle.
OFF-LINE CLEANING
It is recommended to perform a manual off-line cleaning routine a minimum of twice a week.
ATTENTION
For more efficient filter cleaning, it
is recommended to carry out an offline cleaning cycle on a regular
basis.
After the cleaning cycle is finished, system operation
can be continued.
When you continue welding and the control light starts
blinking again immediately or shortly after the cleaning
cycle is finished, the LongLife filter cartridge is saturated and should be replaced.
• See Filter Replacement.
WARNING
Saturation or clogging of the filter
cartridge results in a decrease of
the extraction capacity which could
result in a reduced extraction of
welding fumes.
The off-line cleaning cycle takes
approximately one hour. Do not use
the machine during the off-line
cleaning cycle.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 22
B-7
FILTER REPLACEMENT
WARNING
OPERATION
See Figure B.6 for steps 3-7
3. Lift the LongLife filter cartridge (A) up and out of the
base.
B-7
Take necessary precautions so
that you and your fellow workers
are not overexposed to particulate.
Wear suitable personal protection
equipment, such as gloves, respirator, eye glass and protective
clothing when disposing of the filter and particulate.
Check with local waste management or local
agency(ies) for assistance in the disposal of filter.
If filter has collected certain types of particulate
which local agencies define as hazardous waste,
filter may be classified as hazardous waste and will
need to be disposed in accordance with federal,
state and local regulations - which could vary from
state to state, and between local municipalities
within the state.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 23
B-8
OPERATION
B-8
EMPTYING THE DUST TRAY
Dust and dirt particles from the main filter end up in the
dust tray underneath the machine. To avoid dust tray
overflow thus polluting the workshop, it needs to be
emptied on a regular basis. See Table D.1 in the
Maintenance Section for the frequency of emptying.
ATTENTION
Always wear face mask and gloves
when emptying the dust tray.
1. Loosen the star knob (B), which is accessible from
the underside at the back of the machine.
2. Carefully take out the dust tray (A).
The dust tray can be emptied in different ways:
- Using an industrial vacuum cleaner (preferred way);
or
- Empty in a plastic bag.
3. Empty the dust tray. In case of emptying it in a plastic bag, make sure to seal the bag firmly.
4. Slide the dust tray back into the machine.
5. Carefully tighten the star knob making sure that the
dust tray is sealed airtight.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 24
C-1
ACCESSORIES
OPTIONS
K1668-3 HOSE AND HOOD SET
(OPTION)
The Mobiflex 400-MS(HE) Base Unit can be equipped
with a Hose and Hood Set instead of a flexible extraction arm.
C-1
Page 25
D-1
MAINTENANCE
D-1
SAFETY PRECAUTIONS
WARNING
Have qualified personnel do the maintenance
work. Turn the engine off before working inside
the machine. In some cases, it may be
necessary to remove safety guards to perform
required maintenance. Remove guards only
when necessary and replace them when the
maintenance requiring their removal is
complete. Always use the greatest care when
working near moving parts.
Do not put your hands near the cooling blower
fan. If a problem cannot be corrected by
following the instructions, take the machine to
the nearest Lincoln Field Service Shop.
The product has been designed to function with minimal maintenance. In order to guarantee optimal performance level, periodic maintenance and cleaning activities are required which are described in this chapter.
Maintenance intervals can vary depending on the specific working conditions, such as ambient conditions,
welding consumables and process(es), base material,
coatings on base material and operator procedure.
Therefore, it is required that regular inspection of the
entire system is carried out. It is recommended a thorough inspection of the system occurs at least once
every year.
PERIODIC MAINTENANCE
The maintenance activities in Tables D.1 and D.2
below indicated by [*] can be carried out by the user;
other activities are strictly reserved for well trained and
authorized service personnel.
WARNING
When cleaning equipment or replacing filter use personal protection
equipment (PPE) such as gloves,
respirators and protective clothing
to protect against overexposure to
particulate. It is recommended that
a vacuum cleaner or wet methods
be used to clean up any loose particulate that is present in the extraction arm. It is necessary to use a
vacuum cleaner with HEPA rated filtration.
Entire extraction armCheck the outside of the extension arm and clean it with a
Flexible hosesCheck for cracks, holes or deformities. Replace if necessary.X [*]
Steel cables of balance systemCheck the steel cables for wear. If worn, SeeTroubleshooting
Extraction hoodCheck free movement of extraction hood.X [*]
Throttle valveCheck 90º rotation of the throttle valve using the rotary knob.X [*]
HingesCheck and lubricate the hinge points with bearing grease. See
Balance system
LFA 3.1 / 4.1 Mobile Automatic Only:
Halogen lampCheck halogen lamp by turning on the on/off switch (See Figure
non-aggressive detergent.
Check the inside of the extraction arm and clean with an
industrial vacuum cleaner that meets OHSA guidelines for Cr6
housekeeping.
Section.
Check if the hood stays in any desired position. In not, See
Balance Check.
Figure D.1, item C.
Check and lubricate the steel cable near the balance wheel
with lubricating oil (20W50). SeeFigure D.1, item B.
Check the balance construction of the extraction arm. Adjust
mechanism if necessary. SeeFigure D.1, item A and
Balance Check.
B.4. Replace if necessary.
Check glass spatter guard for weld spatters. Replace if
necessary.
EVERY
MONTH
X [*]
X [*]
X [*]
X [*]
X
EVERY 6
MONTHS
X
X
X
X
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 27
D-3
MAINTENANCE
FIGURE D.1
AACC
C
D-3
A
C
A
C
F
B
B
360°
ACB
DISPOSAL
After life of the product, dispose of product in accordance with federal, state or local regulations.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 28
E-1
TROUBLESHOOTING
HOW TO USE TROUBLESHOOTING GUIDE
WARNING
Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel.
Unauthorized repairs performed on this equipment may result in danger to the technician and machine
operator and will invalidate your factory warranty. For your safety and to avoid Electrical Shock, please
observe all safety notes and precautions detailed throughout this manual.
This Troubleshooting Guide is provided to help you
locate and repair possible machine malfunctions.
Simply follow the three-step procedure listed below.
Step 1. LOCATE PROBLEM (SYMPTOM).
Look under the column labeled “PROBLEM (SYMP-
TOMS)”. This column describes possible symptoms
that the machine may exhibit. Find the listing that best
describes the symptom that the machine is exhibiting.
Step 2. POSSIBLE CAUSE.
The second column labeled “POSSIBLE CAUSE” lists
the obvious external possibilities that may contribute to
the machine symptom.
Step 3. RECOMMENDED COURSE OF ACTION
This column provides a course of action for the
Possible Cause, generally it states to contact your
local Lincoln Authorized Field Service Facility.
Service and Technical Support
For information about specific adjustments, maintenance or repair jobs which are not dealt with in this
manual, please contact Lincoln Electric Automation
Service 888-935-3878.
Make sure you have the following data on hand:
- product name
- serial number
- purchase order (number + date) for warranty verification
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local
Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 29
E-2
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
E-2
PROBLEMS
(SYMPTOMS)
Motor does not start. Machine does
not function.
Motor makes a humming sound.
Machine does not function.
Motor stops automatically.
Machine does not function.
Control light extinguished during
cleaning process. No indication.
POSSIBLE
CAUSE
MOBIFLEX 400-MS(/HE) BASE UNIT
No input power.Check the input power.
Missing jumper on input connection.Wire in base swivel mount.
Input power cord defective.Repair or replace input power cord.
Loose contacts.Repair the contacts.
Motor protection switch defective.Replace the motor protection
switch.
Motor capacitor defective/not connected.
Motor protection switch activated.Let the machine cool down for
Motor defective.Repair or replace the motor.
Control light defective.Replace control light.
Control PC board defective.Replace control PC board.
Repair or replace the motor capacitor.
some time.
Check overload current setting
12A.
RECOMMENDED
COURSE OF ACTION
Control light blinks (“ALARM”).
Insufficient airflow.
Control light keeps blinking
(“ALARM”). No automatic filter
cleaning.
Saturated LongLife filter.Carry out off-line filter cleaning
- 24 VAC magnetic valve defective.Replace magnetic coil or diaphragm.
- Control PC board defective.Replace control PC board.
- Filter cleaning mechanism defective or worn.
- No compressed air or compressed
air pressure too low.
- Pressure difference switch defective.
Replace the filter cleaning mechanism.
Check compressed air system
and/or compressed air connection.
Replace pressure difference
switch.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local
Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 30
E-3
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
E-3
PROBLEMS
(SYMPTOMS)
Machine does not react to pressing
filter cleaning ON/OFF - RESET
button. Activating off-line cleaning
and reset not possible.
Poor suction. Machine does not
function properly.
POSSIBLE
CAUSE
MOBIFLEX 400-MS(/HE) BASE UNIT
Filter cleaning ON/OFF - RESET
button defective.
Control PC board defective.Replace control PC board.
24 VAC supply defective.Repair 24 VAC supply.
LongLife filter cartridge clogged.Carry out off-line filter cleaning
Prefilter clogged.Clean (See Periodic Maintenance)
Throttle valve closed.Open throttle valve.
Outside air is being extracted.Check or replace the sealing mate-
Replace filter cleaning ON/OFF RESET button.
cycle (See Off-line Cleaning) and
check that control light is on.
Replace LongLife filter cartridge
(See LongLife Filter Cartridge).
or replace (See Prefilter) the prefilter.
rial.
RECOMMENDED
COURSE OF ACTION
Dust or smoke coming out of the filter cover. Pollution of the facility.
Dust or smoke coming out of the
dust tray. Pollution of the facility.
Vibrations in the machine. Machine
not steady.
Outlet grid blocked.Remove obstructions from the out-
Imbalance in the extraction fan.Clean the extraction fan.
Replace LongLife filter cartridge
(See LongLife Filter Cartridge).
Replace the LongLife filter cartridge or place correctly.
Replace sealing material.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local
Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 31
E-4
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
E-4
PROBLEMS
(SYMPTOMS)
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE AUTOMATIC ONLY
Motor does not start automatically.
Machine does not function.
POSSIBLE
CAUSE
Lens cap of arc sensor damaged or
dirty.
Arc Sensor defective.Replace arc sensor.
Replace or clean plastic lens cap
of arc sensor.
RECOMMENDED
COURSE OF ACTION
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local
Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 32
E-5
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
E-5
PROBLEMS
(SYMPTOMS)
LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Extraction hood not in balance.
Extraction hood does not stay in
desired position.
Extraction hood not in balance.
Extraction hood canʼt be moved in
desired position.
Extraction capacity insufficient.
Pollution of the facility.
Extraction arm not in balance.
Entire arm falls on its own.
Extraction arm not in balance.
Hood section falls on its own.
POSSIBLE AREAS OF
MISADJUSTMENT(S)
Not enough friction.Adjust balance. See Balance
Check.
Too much friction.Adjust friction. See Balance
Check.
Throttle valve closed.Open throttle valve.
Flexible hose(s) torn or loose.Replace flexible hose(s) or apply
correctly.
Rubber seal(s) torn.Replace rubber seal(s).
Lack of spring tension fan side.Increase spring tension. See
Balance Check.
Lack of spring tension hood side.Increase spring tension. See
Balance Check.
RECOMMENDED
COURSE OF ACTION
Extraction arm creaks or squeaks.
Excessive wear of parts.
Insufficient light to the workpiece.
No clear view.
Insufficient lubrication in hinges.Lubricate hinges using oil or
grease. See MaintenanceSection.
Worn out steel cable.Replace steel cable and lubricate.
Worn out bearing of balance wheel.Replace bearing and lubricate.
LFA 3.1/4.1 MOBILE AUTOMATIC ONLY:
Weld spatters on glass spatter
guard.
Halogen lamp defective.Replace halogen lamp.
Replace glass spatter guard.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local
Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 33
F-1
DIAGRAMS
ELECTRICAL DIAGRAM
F-1
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diagram for a particular code is pasted inside the
machine on one of the enclosure panels. If the diagram is illegible, write to the Service Department for a replacement. Give the equipment code number.
Page 34
NOTES
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 35
NOTES
MOBIFLEX 400-MS(/HE) BASE UNIT + LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
Page 36
G Keep your head out of fumes.
G Use ventilation or exhaust to
remove fumes from breathing zone.
G Turn power off before servicing.
G Do not operate with panel open or
guards off.
WARNING
G Los humos fuera de la zona de res-
piración.
G Mantenga la cabeza fuera de los
humos. Utilice ventilación o
aspiración para gases.
G Gardez la tête à l’écart des fumées.
G Utilisez un ventilateur ou un aspira-
teur pour ôter les fumées des zones
de travail.
G Vermeiden Sie das Einatmen von
Schweibrauch!
G Sorgen Sie für gute Be- und
Entlüftung des Arbeitsplatzes!
G Mantenha seu rosto da fumaça.
G Use ventilação e exhaustão para
remover fumo da zona respiratória.
G Desconectar el cable de ali-
mentación de poder de la máquina
antes de iniciar cualquier servicio.
G Não opere com as tampas removidas.
G Desligue a corrente antes de fazer
serviço.
G Não toque as partes elétricas nuas.
G No operar con panel abierto o
guardas quitadas.
G N’opérez pas avec les panneaux
ouverts ou avec les dispositifs de
protection enlevés.
G Anlage nie ohne Schutzgehäuse
oder Innenschutzverkleidung in
Betrieb setzen!
G Mantenha-se afastado das partes
moventes.
G Não opere com os paineis abertos
ou guardas removidas.
Spanish
AVISO DE
PRECAUCION
French
ATTENTION
German
WARNUNG
Portuguese
ATENÇÃO
Japanese
Chinese
Korean
Arabic
LEIA E COMPREENDA AS INSTRUÇÕES DO FABRICANTE PARA ESTE EQUIPAMENTO E AS PARTES DE USO, E SIGA AS
PRÁTICAS DE SEGURANÇA DO EMPREGADOR.
Page 37
WARNING
Spanish
AVISO DE
PRECAUCION
G Do not touch electrically live parts or
electrode with skin or wet clothing.
G Insulate yourself from work and
ground.
G No toque las partes o los electrodos
bajo carga con la piel o ropa mojada.
G Aislese del trabajo y de la tierra.
G Keep flammable materials away.
G Mantenga el material combustible
fuera del área de trabajo.
G Wear eye, ear and body protection.
G Protéjase los ojos, los oídos y el
cuerpo.
French
ATTENTION
German
WARNUNG
Portuguese
ATENÇÃO
Japanese
Chinese
Korean
Arabic
G Ne laissez ni la peau ni des vête-
ments mouillés entrer en contact
avec des pièces sous tension.
G Isolez-vous du travail et de la terre.
G Berühren Sie keine stromführenden
Teile oder Elektroden mit Ihrem
Körper oder feuchter Kleidung!
G Isolieren Sie sich von den
Elektroden und dem Erdboden!
G Não toque partes elétricas e elec-
trodos com a pele ou roupa molhada.
G Isole-se da peça e terra.
G Gardez à l’écart de tout matériel
inflammable.
G Entfernen Sie brennbarres Material!
G Mantenha inflamáveis bem guarda-
dos.
G Protégez vos yeux, vos oreilles et
votre corps.
G Tragen Sie Augen-, Ohren- und Kör-
perschutz!
G Use proteção para a vista, ouvido e
corpo.
READ AND UNDERSTAND THE MANUFACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO
BE USED AND FOLLOW YOUR EMPLOYER’S SAFETY PRACTICES.
SE RECOMIENDA LEER Y ENTENDER LAS INSTRUCCIONES DEL FABRICANTE PARA EL USO DE ESTE EQUIPO Y LOS
CONSUMIBLES QUE VA A UTILIZAR, SIGA LAS MEDIDAS DE SEGURIDAD DE SU SUPERVISOR.
LISEZ ET COMPRENEZ LES INSTRUCTIONS DU FABRICANT EN CE QUI REGARDE CET EQUIPMENT ET LES PRODUITS A
ETRE EMPLOYES ET SUIVEZ LES PROCEDURES DE SECURITE DE VOTRE EMPLOYEUR.
LESEN SIE UND BEFOLGEN SIE DIE BETRIEBSANLEITUNG DER ANLAGE UND DEN ELEKTRODENEINSATZ DES HERSTELLERS. DIE UNFALLVERHÜTUNGSVORSCHRIFTEN DES ARBEITGEBERS SIND EBENFALLS ZU BEACHTEN.
Page 38
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