MAGNUM COOLERS 10 AND 20
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For use with machines having Code Number 9744, 9746, 9985, 9987, 10267 and 10269
Safety Depends on You
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.
™
IM439-B
April,2001
Date of Purchase:
Serial Number:
Code Number:
Model:
Where Purchased:
ISO 9001
ANSI RAB
QMS
Designed and Manufactured Under a
Quality Program Certified by
ABS Quality Evaluations, Inc.
to ISO 9001 Requirements.
CERTIFICATE NUMBER: 30273
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
OPERATOR’S MANUAL
Copyright © 2001 Lincoln Global Inc.
• World's Leader in Welding and Cutting Products •
• Sales and Service through Subsidiaries and Distributors Worldwide •
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.b.Operate engines in open, well-ventilated
areas or vent the engine exhaust fumes
outdoors.
____________________________________________________
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.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.
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.
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.
Mar ‘95
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.
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 below Threshold Limit Values (TLV)
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.
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.
5.b.
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.
5.c. 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.d. Read and understand the manufacturer’s instructions for this
equipment and the consumables to be used, including the
material safety data sheet (MSDS) and follow your
employer’s safety practices. MSDS forms are available from
your welding distributor or from the manufacturer.
5.e. Also see item 1.b.
vapors
Mar ‘95
to
iii
SAFETY
iii
WELDING SPARKS can
cause fire or explosion.
6.a.
Remove fire hazards from the welding area.
If this is not possible, cover them to prevent
the welding sparks from starting a fire.
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.
Remember that welding sparks and hot
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 manufacturer’s
recommendations.
8.c. Ground the equipment in accordance with the U.S. National
Electrical Code and the manufacturer’s recommendations.
Mar ‘95
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 L’Arc
1. Protegez-vous contre la secousse électrique:
a. Les circuits à l’électrode 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 s’isoler 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 l’eau 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 s’applicuent aussi au pistolet de
soudage.
5. Toujours porter des lunettes de sécurité dans la zone de
soudage. Utiliser des lunettes avec écrans lateraux dans les
zones où l’on pique le laitier.
6. Eloigner les matériaux inflammables ou les recouvrir afin de
prévenir tout risque d’incendie 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 d’incendie.
8. S’assurer que la masse est connectée le plus prés possible
de la zone de travail qu’il est pratique de le faire. Si on place
la masse sur la charpente de la construction ou d’autres
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 d’incendie ou d’echauffement des chaines et des
câbles jusqu’à ce qu’ils 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
d’opérations de dégraissage, nettoyage ou pistolage. La
chaleur ou les rayons de l’arc 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.
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 n’importe quelle
partie du corps.
3. Un coup d’arc peut être plus sévère qu’un coup de soliel,
donc:
a. Utiliser un bon masque avec un verre filtrant approprié
ainsi qu’un verre blanc afin de se protéger les yeux du
rayonnement de l’arc et des projections quand on soude
ou quand on regarde l’arc.
b. Porter des vêtements convenables afin de protéger la
peau de soudeur et des aides contre le rayonnement de
l‘arc.
c. Protéger l’autre personnel travaillant à proximité au
soudage à l’aide d’écrans appropriés et non-inflammables.
4. Des gouttes de laitier en fusion sont émises de l’arc de
soudage. Se protéger avec des vêtements de protection
libres de l’huile, tels que les gants en cuir, chemise épaisse,
pantalons sans revers, et chaussures montantes.
PRÉCAUTIONS DE SÛRETÉ POUR
LES MACHINES À SOUDER À
TRANSFORMATEUR ET À
REDRESSEUR
1. Relier à la terre le chassis du poste conformement au code
de l’électricité 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, I’installation et l’entretien du poste
seront effectués par un électricien qualifié.
3. Avant de faires des travaux à l’interieur de poste, la
debrancher à l’interrupteur à la boite de fusibles.
4. Garder tous les couvercles et dispositifs de sûreté à leur
place.
Mar. ‘93
for selecting a QUALITY product by Lincoln Electric. We want you
Thank You
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 Name & Number _____________________________________
Code & Serial Number _____________________________________
Date of Purchase _____________________________________
Whenever you request replacement parts for or information on this equipment always supply the information
you have recorded above.
to take pride in operating this Lincoln Electric Company product
••• as much pride as we have in bringing this product to you!
vv
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:
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.
EXPLANA
TION OF SYMBOLS THAT APPEAR ON THIS EQUIPMENT
OFF
O
ON
TABLE OF CONTENTS
Page
Installation .......................................................................................................Section A
Technical Specifications ........................................................................................A-1
Product Description ...............................................................................................A-2
Warranty ................................................................................................................A-2
Safety Precautions.................................................................................................A-3
Product Overview. .................................................................................................A-3
Filling the Reservoir ..............................................................................................A-4
Water Line Connection ..........................................................................................A-4
Horizontally Mounting Magnum Coolers to Lincoln TIG Power Sources...............A-5
Vertically Mounting Magnum Coolers to Lincoln Undercarriages..........................A-5
Water Cooled Equipment Installation ....................................................................A-8
K440-1 LN-7 GMA Wire Feeder with Gas and Water Solenoid Valve.................A-10
K527 Water Solenoid Kit for LN-7........................................................................A-10
K529-10 Power Input Cable with Water and Gas Lines ......................................A-11
Operation .........................................................................................................Section B
Safety Precautions ................................................................................................B-1
Operating Precautions...........................................................................................B-1
Lighted Power Switch ............................................................................................B-1
Turning the System On..........................................................................................B-1
Magnum System Monitor.......................................................................................B-2
Demand System with Water Valve or Solenoid.....................................................B-2
Surge Protection....................................................................................................B-2
Fan Motor and Fan Blade......................................................................................B-2
Pump and Pump Pressure.....................................................................................B-2
Pump Failure .........................................................................................................B-3
Cooling Efficiency ..................................................................................................B-3
vi
Accessories.....................................................................................................Section C
Accessories ...........................................................................................................C-1
Maintenance ....................................................................................................Section D
Safety Precautions ................................................................................................D-1
Heat Exchanger Maintenance ...............................................................................D-1
Reservoir Maintenance..........................................................................................D-1
Troubleshooting..............................................................................................Section E
Safety Precautions.................................................................................................E-1
How to Use Troubleshooting Guide.......................................................................E-1
Troubleshooting Guide ..........................................................................................E-2
Wiring Diagrams..............................................................................................Section F
Wiring Diagrams ..............................................................................................F-1,F-2
Parts List..........................................................................................................Appendix
A-1
INSTALLATION
TECHNICAL SPECIFICATIONS – MAGNUM COOLERS 10 AND 20
Model
Cooler 10 Cooler 20
Product No. K877-1 K869-1
Input 115V 60 Hz 1 Phase 115V 60 Hz 1 Phase
Current Draw at Input 1.4 Amps 2.5 Amps
Rated Current Draw 2.0 Amps 3.0 Amps
Operating Pressure 45 psi (310 kPa) (3.0 bar) 60 psi (410 kPa) (4.0 bar)
Shutdown Pressure 60-65 psi (414-446 kPa)
(No delay after flow is (4.0-4.4 bar)
stopped)
Flow Range 0.1 to 0.8 gal/min (0.4 to 3.0 liters/min)
Typical MIG with Magnum 15’ (4.5m) gun 0.55-0.60 gal/min (2.1-2.3 liters/min)
Operating
Flow TIG with Magnum 12.5’ (3.8m) torch 0.25-0.30 gal/min (1.0-1.2 liters/min)
A-1
Open Flow 0.8 (3.0 liters/min)
Reservoir Size 2.0 ga. (8.0 liters)
Coolant Requirement
Weight Shipping 30 lbs. (13.6 kg) 34 lbs. (15.4 kg)
Reservoir 43 lbs. (19.5 kg) 47 lbs. (21.3 kg)
Full
Dimensions L 9.0 in. (229mm) 9.0 in. (229mm)
W 9.0 in. (229mm) 9.0 in. (229mm)
H Top Face 26.5 in. (673mm) 32.00 in. (815mm)
For Use Above Freezing: Tap, distilled, de-ionized, mineral water or well water.
For Use Below Freezing:
such as Prestone, Peak or Zerex or 50% water and 50% pure ethylene glycol
mixture or any water alcohol mixture.
DO NOT USE: Prepackaged welding industry coolants. These coolants may
contain oil-based substances which attack the plastic components in the pump
of the Magnum Cooler and severely reduce pump life.
50% water and 50% automotive antifreeze mixture
H Top 28.75 in. (730mm) 34.25 in. (870mm)
Handle
Undercarriage Use K874 K840-1*, K841-1*, K842-1*,
K874
* Not available at the time of printing.
MAGNUM COOLER 10 & 20
MAR97
A-2
PRODUCT DESCRIPTION
INSTALLATION
A-2
Magnum Coolers 10 and 20 are stand alone recirculating cooling systems designed for use with water
cooled TIG, MIG, PAC (Plasma Arc Cutting) and PAW
(Plasma Arc Welding) guns and torches. Additional
applications include resistance welding, induction
heating and water cooled fixtures such as EDM’s and
small Verti-Shield dams. The connection block 5/8-18
left hand thread matches the standard connector nut
of water hoses used with domestic water cooled guns
and torches.
With lower 45 psi (310 kPa) (3.0 bar) output pressure
delivery to increase TIG torch component life,
Magnum Cooler 10 is made for all water cooled TIG
applications and low to medium duty MIG applications. The higher 60 psi (410 kPa) (4.0 bar) output
pressure delivery of Magnum Cooler 20 supports
higher demand water cooled applications without
decreasing component life.
The Magnum Coolers bring new technology in the
areas of pump, heat exchanger and reservoir designs
to the water cooler market. These technologies allow
the Magnum Coolers to be lighter in weight, lower in
energy consumption, mounted either vertically or horizontally, and operated even in the case of a “soft”
pump failure. The unique “soft” pump failure feature
allows some pump stages to continue to pump coolant
even if one or two stages have failed.
The Magnum Cooler is capable of operating continuously; however, the "on-demand" feature is strongly
recommended in ALL APPLICATIONS TO ASSURE
GOOD PUMP AND MOTOR LIFE.
Magnum Cooler are easy to service. Removal of the
front case provides access to all internal components.
The Phillips head fasteners used to anchor the casing
of the unit match those of the pump and other internal
component connections. In this manner, an operator
can repair all major components using just a Phillips
head screwdriver.
WARRANTY
Warranty for this product is one year after the date of
purchase. For any warranty claim, contact a certified
Lincoln service center.
The unique “On-Demand” system (when used with a
water valve or solenoid in the system) only pumps
coolant when it is needed, saves energy, reduces
noise and increases pump and fan motor life by turning off the system between welds.
MAGNUM COOLER 10 & 20
A-3
INSTALLATION
A-3
INSTALLATION
WARNING
ELECTRIC SHOCK can kill.
• Disconnect input power by removing
plug from receptacle before working
inside Cooler.
• Use only grounded receptacle.
• Do not remove the power cord ground prong.
• Do not touch electrically “hot” parts inside Cooler.
• Have qualified personnel do the installation, maintenance and troubleshooting work.
---------------------------------------------------------------------
PRODUCT OVERVIEW
The LIGHTED POWER SWITCH is located at the left
side of the control panel (A). Cooler will be “ON” when
pressed to “I“.
Coolant INLET and OUTLET fittings are found at the
rear of the unit (B). They are welding industry standard English left-hand fittings for water coolant lines.
The right side fitting is marked “coolant out” (coolant
supply to the welding equipment); the left side fitting is
marked “coolant in” (coolant returning from the welding equipment).
The FILL CAP is at the front of the unit (C).
Cap removal: While pressing the bulls-eye
inward, grip the tab and remove the cap with
a peeling motion.
Cap replacement: Install by pressing inward on the
bulls-eye; the cap will “snap” into position.
The coolant FLOW INDICATOR is accessed by
removal of the fill cap. Actual return flow is directly visible, via the fill opening (D) with the unit in vertical or
horizontal position.
Air flow vents (E).
FIGURE 1
A
E
E
C
D
B
MAGNUM COOLER 10 & 20
A-4
The case front sheet metal design allows for ease of
access to repair all internal components. The Phillips
head fasteners used to secure the casing match the
style of fasteners used in the pump head and other
major components. In this manner, an operator can
repair all major components in the unit using just a
Phillips head screwdriver. The case back trapezoidal
shape eliminates the possibility of the exit airflow of
the Cooler being choked when the Cooler is operated
lying horizontally. The exiting airflow is also pushed
back away from the unit so that hot air does not recirculate through the louvers in the case front.
A blow molded, high density one piece polyethylene
housing serves as both the reservoir and support
frame for the Coolers. The use of polyethylene plastic
gives a design that is lightweight and durable.
INSTALLATION
FILLING THE RESERVOIR
PROPER COOLANT ADDITION
FOR USE ABOVE FREEZING: Tap, distilled,
deionized, mineral water, or well water.
FOR USE BELOW FREEZING: 50% water and
50% automotive antifreeze mixture such as
Prestone, Peak or Zerex or 50% water and 50%
pure ethylene glycol mixture or any water alcohol mixture.
DO NOT USE: Prepackaged welding industry
coolants. These coolants may contain oil-based
substances which attack the plastic components in the pump of the Magnum Cooler and
severely reduce pump life. Once added to the
Cooler, the substances are virtually impossible
to purge from the water lines and heat exchanger.
To avoid freeze damage and water leakage in shipment, every Cooler 10 and 20 unit is delivered empty
with no coolant in the system. To fill the unit, locate
the plastic snap-on reservoir fill cap at the front middle
of the unit. Remove the fill cap by pressing the center
of the cap inward while pulling at the tab on the outer
edge.
NOTE: The unit can be filled either vertically or hori-
zontally. UNPLUG THE COOLER BEFORE FILLING
THE RESERVOIR.
For best results when using the Magnum Cooler with
Lincoln guns or torches, use distilled, deionized or
demineralized water, although if not available, tap
water can be used. If protection from freezing is
desired, use a 1 gallon (4 liter) automotive antifreeze
and 1 gallon (4 liter) tap water mixture. An alcohol or
glycol mixture with water is also acceptable.
A-4
When using the Magnum Cooler with other products,
consult the manufacturer’s recommendations for
coolant. Do not use oil based coolants.
The unit can be filled either vertically or horizontally.
UNPLUG THE COOLER BEFORE FILLING THE
RESERVOIR.
Upright: Tilt the unit backward and pour 2 gallons (8.0
liters) of coolant into the reservoir fill hole through a
funnel.
or
If 1 gallon (4 liters) antifreeze or fill bottle is available,
tilt the unit forward until the bottle mates with the
reservoir fill hole. Then tilt the unit backward until the
fill bottle is emptied. Fill the unit with 2 gallons (8
liters) of coolant.
Lying down: Carefully add 2 gallons (8.0 liters) of
coolant through a funnel into the reservoir fill hole.
AVOID SPILLING COOLANT INTO THE FRONT
CASING OF THE UNIT.
Unit will be full when coolant lies just below the reservoir opening with the unit in its upright position.
NOTE: DO NOT ADD MORE THAN 2 GALLONS
(8 LITERS) OF COOLANT INTO THE RESERVOIR. The fill cap contains a pressure release
air hole which must not be blocked by overfilling
the reservoir with coolant.
Be certain to replace the reservoir fill cap when the
reservoir is full. Simply press on the inside center of
the fill cap until the cap snaps into place. Operation of
the Magnum Cooler without the fill cap in place can
cause poor cooling efficiency, evaporation loss of
coolant, and low product life.
WATER LINE CONNECTION
The brass connection block located at the back center
of each Cooler model contains two female 5/8-18 left
hand threads to mate with water hoses typically used
in the welding market.
For all Lincoln products and those with a connector
nut on the water hose which mates with the connector
block at the back of a Magnum Cooler:
(Reference FIG. 2) Take the INLET hose (colored or
tagged blue on most hoses) and thread it into the
coolant OUT line located on the right hand side of the
connector block at the back of the Cooler. Secure the
connector nut of the hose tightly into the connector
block with an adjustable or 11/16” open-ended
wrenchso that leaking does not occur. Then take the
OUTLET hose (colored or tagged red on most hoses)
and thread it into the coolant IN line located on the left
MAGNUM COOLER 10 & 20
MAR97
A-5
INSTALLATION
A-5
hand side of the connector block Again, tightly secure
the connector nut of the hose into the connector block
of the Cooler with an adjustable or 11/16” open-ended
wrench to insure that no leaking occurs. BE CERTAIN THAT NO LEAKS EXIST WHEN COOLER IS
TURNED ON. A LEAK WILL DEPLETE RESERVOIR
VOLUME, CAUSE POOR COOLING PERFORMANCE AND REDUCE GUN OR TORCH LIFE.
If the connector nut on a water hose does not mate
with connector block at the back of a Magnum Cooler:
Order: (2) T15007-2 Connector Nuts*
(2) T15008 Nipples*
(2) S10888-35 Hose Clamps*
For proper installation, remove the connector nut from
the water hose by making a straight cut 1/4-1/2” (612mm) away from the nipple located inside of the
hose. Take the nipple and the connector nut, and
insert the nipple into the connector nut so that the
threaded end of the connector nut points away from
the barbed end of the nipple. Place the hose clamp
over the water hose and twist the barbed end of the
nipple into the hose until the shoulder of the nipple is
flush with the end of the hose. Secure the hose onto
the nipple by tightening the hose clamp around the
nipple. No water can leak from the connection if it is
properly attached. Repeat the process for the other
water hose.
NOTE: Be certain that only 5/8-18 left hand male
nuts with clean and smooth threads are used on
your water hoses. Poor connections cause
water to leak at connector block, down hose
lines, and eventually out the case sides of the
unit.
* The connector and nipples listed fit tightly onto 5/32”
(4.0mm) to 3/16” (4.8mm) inner diameter hose, but, if
clamped tightly to the hose can fit up to .250” (6.4mm)
inner diameter hose.
FIGURE 2
Inlet and Outlet Hose Connection Diagram
HORIZONTALLY MOUNTING MAGNUM COOLERS
ON LINCOLN TIG POWER SOURCES
Magnum Coolers can be mounted either upright or
horizontally. For a complete compact system,
Magnum 10 or 20 Cooler can be mounted horizontally
on the roof of Lincoln TIG Power Sources using the
optional K559-2 Horizontal TIG Mounting Bracket. For
proper installation, follow the instructions provided
with the kit. (See Figures 3a and 3b)
VERTICALLY MOUNTING MAGNUM COOLERS TO
LINCOLN UNDERCARRIAGES K874, K840-1*, K8411*, or K842-1*
When placing the Cooler 10 or 20 at the back of a
Lincoln Undercarriage used in tandem with a Lincoln
MIG power source, order K559-3 Magnum Cooler
MIG Mounting Bracket.
Reference Figure 3c and Table 2 for proper connection of the bracket to the back bolt pattern of the
Cooler. With the four Phillips head screws supplied,
align the bracket onto the back of the Cooler at the
proper holes displayed in Figure 3c. Do not fully tighten the bracket allowing the bracket to slightly move up
and down. Place the Cooler at the back right of the
undercarriage so that the lip of the Cooler bracket
rests on the top of the undercarriage upper cylinder
support. Align the holes of the Cooler bracket with the
holes on the undercarriage upper cylinder support.
Fasten the Cooler bracket with the holes on the
undercarriage upper cylinder support. Fasten the
Cooler bracket onto the undercarriage support with
both 1/4-20 bolts, 1/4-20 hex nuts, plain washers and
lock washers provided. Be certain to tighten all the
fasteners when the installation is complete.
* Not available at time of printing.
COOLANT
IN
FROM
HEAT
SOURCE
(RED)
SOURCE
TO
HEAT
(BLUE)
COOLANT
OUT
MAGNUM COOLER 10 & 20
A-6
INSTALLATION
FIGURE 3a FIGURE 3b
COOLER HOLE "A"
COOLER HOLE "B"
COOLER HOLE "C"
BRACKET HOLE "A"
BRACKET HOLE "B"
BRACKET HOLE "C"
W
AR
NIN
G
Self Tapping Screw
1. ON COOLERS 10 & 10-I :
Align holes A & C of mounting bracket with holes B & C of Magnum Cooler. Secure bracket to the back
of Cooler with 4 self tapping screws provided.
ON COOLERS 20 & 20-I :
Align holes A & B of mounting bracket with holes A & B of Magnum Cooler. Secure bracket to the back
of Cooler with 4 self tapping screws provided.
2. Route all water line connections onto connection block at back of Cooler as outlined in the IM manual
provided with the Magnum Cooler.
(4 req'd)
Mounting Bracket
(shown detatched
from Cooler back
for clarity)
Plain Washer
Lock Washer
1/2-13 Hex Nut
NOTE: FOR PROPER INSTALLATION WHEN USED WITH LINCOLN K835, K840,
K841 OR K842 UNDERCARRIAGES, THE RUBBER FEET MAY NEED TO BE
REMOVED FROM THE BOTTOM OF THE MOUNTING BRACKET.
Door Bumper
(Factory Installed)
(6 req'd)
SEE NOTE
Optional
Undercarriage Arm
POWER SOURCE
FRONT
1/2-13x1.50HHCS
Large Plain Washer
*NOT REQ'D WHEN USING
UNDERCARRIAGE OPTION
A-6
TABLE 2
Recommended Magnum Cooler Use with Lincoln
Power Source / Undercarriage Combination
Figure 3
Power Source Cooler Undercarriage Mtg. Bkt.
Scheme
CV-200 Cooler 10 K874 A
CV-250 Cooler 10 or 20** K874 A or C
CV-300 Cooler 10 or 20** K874 B or D
CV-400 Cooler 20 K841-1* E
DC-400 Cooler 20 K841-1* E
DC-600 Cooler 20 K842-1* E
Pulse Power 500 Cooler 20 K842-1* E
R3S-325 Cooler 20 K840-1 E
** Use 20 model for demanding welding applications.
* Not available at time of printing.
MAGNUM COOLER 10 & 20
A-7
INSTALLATION
FIGURE 3c
Undercarriage Mounting Bracket Layout
A-7
A
POWER SOURCE HEIGHT
16.44" (417.6mm)
Cooler 10 Mounting Scheme
B
POWER SOURCE HEIGHT
21.50" (546.1mm)
C
POWER SOURCE HEIGHT
16.44" (417.6mm)
D
POWER SOURCE HEIGHT
21.50" (546.1mm)
POWER SOURCE HEIGHT
Cooler 20 Mounting Scheme
MAGNUM COOLER 10 & 20
E
27.50" (698.5mm)
A-8
INSTALLATION
WATER COOLED EQUIPMENT INSTALLATION
NOTE: Magnum Coolers operate at 45 psi (3.0 bar)
(310 kPa) of pressure for Cooler 10 and 60 psi (4.0
bar) (414 kPa) of pressure for Cooler 20. When used
in the demand system, the pressure in the supply
hose to the water solenoid or valve can surge to 20
psi (1.4 bar) (138 kPa) above holding pressure just
before shutdown. The holding pressure will be 60-65
psi (4.0-4.4 bar) (414-448 kPa). When using the
Magnum Cooler with other water cooled TIG, MIG and
plasma systems, consult the manufacturer’s instruction manual.
FIGURE 4
Water Cooled TIG Torch Connection
A-8
POWER SOURCE
GAS
IN
TO WORK
COOLANT
OUT
OUT
COOLANT
IN
IN
POWER CABLE ADAPTER*
COOLANT*
GAS
COOLANT*
POWER / COOLANT
COOLANT
GAS
ARGON GAS
CYLINDER
COOLANT
OUT
REGULATOR
FLOWMETER
GAS*
*INCLUDED IN
KP504 HOOK-UP KIT
TIG TORCH
MAGNUM COOLER 10 & 20
A-9
INSTALLATION
FIGURE 5
Water Cooled MIG Gun Connection
A-9
COOLANT
IN
COOLANT
OUT
COOLANT
COOLANT
GUN CABLE
FIGURE 6
Water Cooled Plasma System Connection
COOLANT
IN
COOLANT
OUT
AIR
PLASMA
CUTTING
POWER
SOURCE
MAGNUM COOLER 10 & 20
COOLANT
ELECTRODE
CABLE & AIR
COOLANT
A-10
INSTALLATION
A-10
K440-1 LN-7 GMA WIRE FEEDER WITH GAS AND
WATER SOLENOID VALVE
The K440-1 LN-7 GMA wire feeder is equipped with
internal water lines and external connectors for attachment to a water cooled MIG gun and a Magnum
Cooler. The water solenoid control of the K440-1 LN-7
GMA enables the feeder to trigger the demand system
of a Magnum Cooler. (Reference Operation Section
for an explanation of the Magnum Cooler demand
system). Follow the instruction manual supplied with
the wire feeder and Figure 7 for proper connection of
the K440-1 LN-7 GMA wire feeder to a Magnum
Cooler and a water cooled MIG gun.
FIGURE 7
K527 WATER SOLENOID KIT FOR LN-7 2-ROLL
AND LN-7 2-ROLL AND 4-ROLL GMA WIRE FEEDERS
For LN-7 2-Roll Model Above Code 9484
For LN-7 GMA 2-Roll and 4-Roll Models Above Code
9100
The K527 water solenoid kit can be added to an LN-7
or LN-7 GMA wire feeder for conversion from an air
cooled to a water cooled MIG system. The added
solenoid control enables the feeder to trigger the
demand system of a Magnum Cooler. Follow the kit
instructions provided for proper installation of the
K527 water solenoid kit to an LN-7 or LN-7 GMA wire
feeder and Figure 7 for proper connection of the converted wire feeder to a Magnum Cooler and a water
cooled MIG gun. Reference Operation Section for an
explanation of the Magnum Cooler demand system.
COOLANT
IN
Connection to Wire Feeder Equipped with Solenoid Control
COOLANT
OUT
COOLANT
COOLANT
COOLANT
COOLANT
GUN CABLE
NOTE:
COOLANT
OUT
COOLANT
IN
=
BLUE HOSE
=
RED HOSE
MAGNUM COOLER 10 & 20
A-11
INSTALLATION
K529-10 POWER INPUT CABLE WITH WATER AND
GAS LINES
The K529 power input cable connects from the front of
a Lincoln power source to the back of LN-7 and LN-7
GMA wire feeders equipped with a water solenoid
control. K529-10 is 10 ft. (3.0m) long and includes two
water hoses and a gas line. The lengths of the two
water hoses and gas line are designed for proper connection to a Magnum Cooler and a gas cylinder located on the back of a Lincoln K874, K840-1*, K841-1* or
K842-1* double cylinder undercarriage. The water
connections are 5/8-18 left hand thread while the gas
connection is 5/8-18 right hand thread. Reference
Figure 8 when using the K529 power input cable.
* Not available at time of printing.
Figure 8
A-11
COOLANT
CONTROL CABLE
TO WORK
K529-10 POWER INPUT CABLE CONNECTION
SHIELDING
GAS
IN
COOLANT
OUT
COOLANT
COOLANT
ELECTRODE CABLE
WITHOUT
SOLENOID CONNECTIONS
IN
OUT
K529-XX
NOTE:
COOLANT
GUN CABLE
COOLANT
OUT
COOLANT
IN
COOLANT
=
BLUE HOSE
=
RED HOSE
MAGNUM COOLER 10 & 20
B-1
OPERATION
B-1
SAFETY PRECAUTIONS
WARNING
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts or
electrode with skin or wet clothing.
• Insulate yourself from work and
ground.
• Always wear dry insulating gloves.
------------------------------------------------------------------------
FUMES AND GASES can be dangerous.
• Keep your head out of fumes.
• Use ventilation or exhaust to remove
fumes from breathing zone.
------------------------------------------------------------------------
WELDING SPARKS can cause fire or
explosion.
• Keep flammable material away.
• Do not weld on closed containers.
------------------------------------------------------------------------
ARC RAYS can burn eyes and skin.
• Wear eye, ear and body
protection.
- Even when using the Magnum Cooler in an “ondemand” application, the power to the Cooler should
be turned off when welding is not taking place for a
long period of time.
- Be certain that the Cooler is on (power switch in the
“I” position) before beginning to weld, especially
when using the Cooler in the demand system.
- Never operate the Cooler with the reservoir fill cap
removed.
- Avoid placing the Cooler near areas of extreme
heat.
- Avoid placing the Cooler near a flux hopper or an
area where dust build-up is extreme.
- Avoid kinking or putting sharp bends in any water
lines.
- Keep all water lines clean.
LIGHTED POWER SWITCH
A long life, lighted power switch is located at the left
side on the control panel. When switched “ON”, the
switch will be pressed toward the “I” symbol.
------------------------------------------------------------
See additional warning information at
front of this operator’s manual.
-----------------------------------------------------------
The following should always be observed when operating any Magnum Cooler:
- Never operate the Cooler with case off.
- Immersion in water around electrical lines can
cause electrical shock.
- Never place fingers into openings of Cooler. Moving
parts can injure.
- Unplug the Cooler before filling the reservoir.
- Never operate the Cooler with the reservoir fill cap off.
OPERATING PRECAUTIONS
The following should always be observed when operating any Magnum Cooler:
- Check the Magnum system monitor to verify ade-
quate flow for the applicationr.
- Check the reservoir daily.
- Keep the reservoir full especially after changing any
water lines.
Because it will only light when the Cooler is pumping
coolant, the switch serves as an indicator for the
Magnum system monitor. For proper operation, the
switch should beam steadily when coolant is pumping
and remain unlit when flow is stopped. Reference the
Magnum system monitor sections for an explanation.
TURNING THE SYSTEM ON
After filling the reservoir and connecting the coolant
hoses to the Magnum Cooler per the Installation
Section, plug the unit into an electrical receptacle for
start-up operation. Be certain that the power input into
the unit matches the Cooler’s rated input.
You will be able to hear the fan running and feel air
flow out of the back of the unit when the Cooler is
operating. The Cooler will run continuously when
operated without a water solenoid or valve. If a water
solenoid or valve is used, the Cooler will run for a
short period of time until the demand system is activated and the unit shuts off.
When first starting the unit, check all of the water lines
to insure that no water leaks are present. Water leakage causes poor welding performance, poor cooling
performance, low welding component life and potential electrical safety hazards.
MAGNUM COOLER 10 & 20
B-2
OPERATION
B-2
MAGNUM SYSTEM MONITOR
Always check the Magnum System Monitor before
beginning to weld. The power switch light located at
the top of the unit functions as the system monitor.
The light will beam steadily when coolant is flowing
and remain unlit when flow is stopped. The light will
flicker if there is inadequate flow through the system. Be sure to check the operation periodically
and each time your welding setup is changed.
Coolers are factory set to deliver coolant for the most
common welding setups.
IF COOLANT STILL FLOWS, BUT THE LIGHT
FLICKERS:
1. The System Monitor light indicates if there is a
restriction somewhere downstream from the
Cooler. Be certain that water lines and welding
apparatus are not crimped, partially blocked or
obstructed.
2. Uncoil the water lines to remove any kinks from the
lines.
CAUTION
NEVER BYPASS THE COOLER POWER SWITCH.
When using a water valve or solenoid, be certain to
turn the Magnum Cooler off (“O” position) when not in
use. Cooler will appear to be off in the demand sys-
tem but will be supplied as long as the switch is on (“I”
position). Leaving the Cooler on can eventually cause
the system to turn on and off when not in use (light will
turn on and off) and, over time, decrease the demand
system performance.
------------------------------------------------------------------------
SURGE PROTECTION
To protect components from voltage spikes in power
lines, an MOV-Capacitor suppressor assembly attaches across the AC input of the rectifier bridge. The suppressor blocks spikes up to 3000V for 1 ms.
FAN MOTOR AND FAN BLADE
3. Unhook the input and output lines from the Cooler.
Blow out the welding apparatus lines and/or connection lines to remove any particulate. Reattach
and check flow again.
NOTE: If the system uses a water valve, check to
make sure that the valve is working properly.
DEMAND SYSTEM WITH WATER VALVE OR SOLENOID
When linked to a water solenoid or valve, the demand
system works as follows:
When the weld is complete and the trigger circuit
opened, the solenoid stops water flow into the torch or
the gun. The pump senses the buildup of pressure
and the internal components of the Cooler turn off.
When the arc is started and the trigger and the solenoid are enabled, the system pressure is relieved and
the Cooler immediately begins to run. When a water
valve or solenoid is not used, the pump does not
sense any build up of pressure and the Cooler runs
continuously.
The smaller Cooler 10 model contains one fan while
the larger Cooler 20 model contains two fans. All
Cooler 10 and 20 units use the same fan blade capable of moving a large volume of air in a small area of
space. Each fan blade is independently driven by a
high torque, AC, small industrial fan motor. A one-time
blow fuse prevents a failed fan motor from overheating and further damaging the Cooler or causing a
safety problem. The fan motor is capable of operating
both vertically or horizontally although vertical operation offers longer fan motor life.
PUMP AND PUMP PRESSURE
All Cooler 10 and 20 units contain a DC motored
diaphragm pump manufactured with an integral pressure sensing control switch. The positive displacement self-priming pump consists of 3 separate, selfregulating, parallel pumping stages. If one stage fails,
the other two continue pumping with a slight decrease
in flow. This “soft” failure protects the water cooled
gun or torch from meltdown and allows the operator to
continue welding until a repair can be made. The
pump’s plastic design resists the common causes of
water cooler pump failure such as:
MAGNUM COOLER 10 & 20
B-3
OPERATION
B-3
- Abrasion failure due to particulate in coolant.
- Corrosion failure due to deionized water and pure
glycol mixtures.
- Cavitation failure due to air bubbles introduced by
an intake screen ( or any other source).
- Dry operation failure due to the reservoir being emptied.
- Over pressure failure due to crimping or blocking of
water hoses.
- Catastrophic sudden failure due to wear of carbon
vanes in turbine pumps.
The spring actuated normally closed pressure switch
is located at the top of the pump head. The springs
sense a pressure buildup in the pump head and, with
a buildup of pressure above the operating pressure,
enable the switch which shuts off power to the fan
motor and pump motor. The pressure switch allows
the Cooler to run intermittently “On Demand” when
connected to a water valve or solenoid only providing
cooling water when it is needed. This feature saves
energy, but more importantly, drastically increases
pump and fan motor life. For best operation, no delay
time should exist from the time flow stops and when
the pump is turned off. (Refer to “Magnum System
Monitor” section).
The Magnum Cooler effectively removes the heat of
the arc away from the gun or torch handle and places
it into the exiting air flow at the back of the Cooler.
Outside temperature can affect the cooling performance of a Magnum Cooler.
For example:
A. COOL day (50°F, 10°C): More HEAT is trans-
ferred from the water in the heat exchanger to the
air. The water is COOLER and more HEAT is
transferred from the gun or torch to the water.
RESULT: THE GUN OR TORCH FEELS COOLER
B. HOT day (100°F, 38°C): Less HEAT is transferred
from the water in the heat exchanger to the air.
The water is HOTTER and less HEAT is transferred from the gun or torch to the water.
RESULT: THE GUN OR TORCH FEELS HOTTER.
Unlike other water coolers that depend on bulky reservoir size, the high efficiency components of Magnum
Coolers allows the reservoir size to be small. The
result is a lightweight, portable unit.
PUMP FAILURE
Magnum Cooler pumps are designed to fail “soft” so
that welding can continue until a repair is made. In the
unlikely event of a “soft” pump failure, water will slowly
leak from the pump head and drip out the case sides
of the unit. The internal electrical components are isolated away from the pump and are in no danger from
the leak. S20095-1 and S20095-3 Pump Replacement
Kits and S20095-2 Pump Rebuild Kit are available for
repair of the pump. The only tool required is a Phillips
head screwdriver.
COOLING EFFICIENCY
The high cooling efficiency of Magnum Coolers offers
a cooler, more comfortable gun or torch than conventional air cooled procedures as well as leading competitors water cooled systems. The heat exchanger’s
corrugated fin improves heat convection transfer while
minimizing air flow restriction. This design offers a
durable construction capable of withstanding impact of
objects through air slots. Table 3 states the recommended use and cooling rate for 10 and 20 Cooler
models. Refer to Figure 9 for a description of how
Magnum Coolers perform.
MAGNUM COOLER 10 & 20
B-4
ROOM AIR
IN
OPERATION
FIGURE 9
Circulation of Magnum Cooler
HEATED
AIR OUT
B-4
COOLANT
RETURN
FAN
PUMP
HEAT
EXCHANGER
COOLANT
INTAKE
NOTE:
COOLANT
COOLANT
COOLANT
OUT
COOLANT
IN
TABLE 3
Approximate Cooling Rate and Recommended Use
Model
=
BLUE HOSE
=
RED HOSE
(1)
Cooler 10 Cooler 20
Product No. K877-1 K869-1
Max. Welding Current 400A 600A
TIG 100% duty cycle 100% duty cycle
Max. Welding Current 400A 600A
MIG 100% duty cycle 100% duty cycle
Max. Arc Current Test each application
PAW for cooling requirements
PAC
Misc. Applications
(1)
The values listed are based on lab test results. Some applications may vary.
MAGNUM COOLER 10 & 20
C-1
PARTS DESCRIPTION FOR MAGNUM COOLER
ACCESSORIES
S20095-1 Pump Replacement Kit (60 psi) for
Magnum Cooler 20 Models
Includes:
* (1) Complete 40-60 psi (3.0-4.0 bar) (310-414)
kPa) Pressure switch assembly.
* (1) Complete 60 psi (4.0 bar) (414 kPa) Pump
with all internal components and hose connec
tions.
* (1) Drive assembly
(1) Installation instructions
* All of the above assembled together with three short
screws and retaining hex nuts.
ACCESSORIES
C-1
S20095-2 Pump Rebuild Kit for Magnum Cooler 10
and 20 Models
Includes:
(1) Teflon shim
(1) Diaphragm
(2) 45 psi (3.0 bar) (310 kPa) spring
(1) 60 psi (4.0 bar) (414 kPa) spring
(1) 80 psi (5.4 bar) (551 kPa) spring
(3) Conical spring seats
(1) Installation instructions
S20095-3 Pump Replacement Kit (45 psi) for
Magnum Cooler 10 Models
Includes:
* (1) Complete 40-60 psi (3.0-4.0 bar) (310-414 kPa)
Pressure switch assembly.
* (1) Complete 45 psi (3.0 bar) (310 kPa) Pump with
all internal components and hose connections.
* (1) Drive assembly
(1) Installation instructions
* All of the above assembled together with three short
screws and retaining hex nuts.
MAGNUM COOLER 10 & 20
D-1
MAINTENANCE
D-1
WARNING
ELECTRIC SHOCK can kill.
• Disconnect input power by removing
plug from receptacle before working
inside Cooler.
• Do not operate with covers removed.
• Use only grounded receptacle.
• Do not remove the power cord ground prong.
• Do not touch electrically “hot” parts inside Cooler.
• Have qualified personnel do the installation, maintenance and troubleshooting work.
---------------------------------------------------------------------
HEAT EXCHANGER MAINTENANCE
To maintain maximum efficiency, the heat exchanger
should be kept clean from dust and dirt buildup. Clean
the heat exchanger periodically using a vacuum hose
or low pressure air line. Avoid placing the unit near a
flux hopper or a flux waste container. A clean heat
exchanger offers better cooling performance and
longer product life. If extremely dirty conditions exist, it
may be necessary to remove the heat exchanger
completely from the Cooler for a thorough soap and
water cleaning of the cooling fins. Use care to avoid
damaging the fins.
Both the S20095-1 and S20095-3 Pump Replacement
Kits consist of a molded pump head equipped with all
internal pump components to replace a failed pump or
cracked pump head of a Magnum Cooler. The Pump
Replacement Kit includes a complete pre-assembled
pressure switch assembly and pump assembly.
Although the Pump Replacement Kit costs more than
the Pump Rebuild Kit, the time to install it is less and
saves money when down time is costly. When repairing the Cooler pump, follow the instructions supplied
with the kit. The only tool needed for installing the
S20095-1 or S20095-3 Pump Replacement Kit is a
Phillips head screw driver. Reference Parts Section
for a parts list of the Pump Replacement Kit.
S20095-2 Pump Rebuild Kit for Magnum Cooler 10
and 20 Units:
The S20095-2 Rebuild Kit consists of a all the necessary internal components to rebuild the most common
“soft” pump failure that occurs in a Magnum Cooler.
Water will slowly drip from the pump head when the
pump experiences a “soft” failure. The rebuild procedure is more involved than the pump replacement procedure but is more cost efficient when labor rates are
low or when down time is not critical. The only tool
needed for rebuilding the pump is a Phillips head
screw driver. Follow the instructions supplied with the
kit when rebuilding the pump head. Reference Parts
Section for the S20095-2 Magnum Cooler Pump
Rebuild Kit.
RESERVOIR MAINTENANCE
The reservoir volume should be checked daily before
using the Cooler. Remove the reservoir fill cap and
check the coolant level. Unit is full when the coolant
lies just below the reservoir fill opening with the unit in
an upright position. Keep the reservoir full especially
after changing the water lines.
The Cooler should always be operated with the reservoir fill cap on. In areas where dust can be introduced
into the reservoir through water lines or reservoir fill
cap removal, periodically flush the unit out. Dump the
old coolant and rinse the inside of the reservoir. Add
new coolant when finished. A reservoir free from particle buildup and dirt offers better cooling efficiency and
longer pump, gun and torch life.
S20095-1 Pump Replacement Kit (60 psi) for Magnum
Cooler 20 Units:
S20095-3 Pump Replacement Kit (45 psi) for Magnum
Cooler 10 Units:
MAGNUM COOLER 10 & 20
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.
__________________________________________________________________________
E-1
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 (SYMPTOMS)”. 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.
If you do not understand or are unable to perform the
Recommended Course of Action safely, contact your
local Lincoln Authorized Field Service Facility.
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.
MAGNUM COOLER 10 & 20
E-2
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
TROUBLESHOOTING
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
E-2
RECOMMENDED
COURSE OF ACTION
Cooler does not operate with power
switch on.
(Switch pushed to
"1" position.)
Power switch blinks or flickers while
coolant is flowing. (Continuous use,
NO Water Valve or Solenoid in the
system.)
a. Power cord unplugged.
b. No power at outlet.
c. Power cordset damaged.
d. Unit too hot. Thermal protector
tripped.
e. Water lines blocked or crimped.
f. Unit is used in a demand system
and water valve or solenoid dam-
aged.
g. Leak in gun or water hoses.
h. Reservoir empty.
I. Power switch faulty.
j. Solenoid valve is closed.
k. Female quick-connect fittings are
not connected to male fittings.
a. Water lines partially blocked or
obstructed.
b. Internal hose or heat exchanger is
blocked.
c. Restriction is too high for the
Cooler being used.
a. Plug in power cord.
b. Check outlet circuit breaker.
c. Repair damaged cord or order
new cordset.
d. Allow unit to cool. Relocate unit
away from source of heat.
e. Clear blockage in hose. Avoid
kinking or putting sharp bends in
water lines.
f. Repair water valve or solenoid.
g. Repair leak.
h. Fill reservoir.
I. Replace power switch.
j. Pull trigger on welding gun to open
solenoid valve.
k. Connect all quick connect fittings
to their mating parts.
a. Clear blockage in hose. Avoid
kinking or putting sharp bends in
water lines.
b. Carefully clear blockage. Clean all
hoses and the reservoir.
c. Use the Cooler 20 for MIG appli-
cations. Cooler 10 can be used
for either MIG or TIG applications.
Using a water valve or solenoid and
power switch blinks or flickers while
coolant is flowing or when flow is
stopped.
Using water valve or solenoid and
power switch light turns on and off
when not in use.
Internal water leak.
a. Water lines partially blocked or
obstructed.
b. Water valve or solenoid failure.
c. Internal hose or heat exchanger is
blocked.
d. Restriction is too high for the
Cooler being used.
a. Leak in gun or water hoses.
b. Demand system stress. System
not used for long period of time
with Cooler left on. (Power switch
pushed to “I”).
a. Hose clamp loose on one of inter-
nal hoses.
b. Internal hose punctured.
c. Heat exchanger leaking.
d. Pump experiencing “soft” failure
and leaking around plastic housing of pump head.
e. Pump head cracked.
a. Clear blockage in hose. Avoid
kinking or putting sharp bends in
water lines.
b. Repair or replace water valve or
solenoid.
c. Carefully clear blockage. Clean all
hoses and the reservoir.
d. Use the Cooler 20 for MIG appli-
cations. Cooler 10 can be used
for either MIG or TIG applications.
a. Repair leak.
b. Turn power switch off when not in
use. (Power switch pushed to
“O”). DO NOT LEAVE POWER
ON WHEN COOLER IS NOT IN
USE FOR A LONG PERIOD OF
TIME.
a. Tighten or replace hose clamp.
b. Replace punctured hose with new
hose.
c. Replace heat exchanger.
d. Repair pump with S20095-1 or
S20095-3 Pump Replacement Kit
or S20095-2 Pump Rebuild Kit.
e. Replace pump head with S20095-
1 or S20095-3 Pump
Replacement Kit.
MAGNUM COOLER 10 & 20
E-3
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
TROUBLESHOOTING
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
E-3
RECOMMENDED
COURSE OF ACTION
Leak at inlet/outlet connector
block.
Torch or gun runs hot.
Fan operates but there is low
coolant flow.
a. Loose connector fitting.
b. Hose clamp loose.
a. Unit placed by area of extreme
heat.
b. Low coolant flow.
c. No coolant flow.
d. Fan not operating.
e. Heat exchanger clogged.
a. Leak in torch/gun or hoses.
b. Torch/gun or hoses partially
obstructed.
c. Reservoir empty or very low.
d. DC+ or DC- connection loose
on rectifier bridge.
e. Pressure low (pump motor fail-
ing).
f. One or more pump stages
have failed.
a. Tighten connector nut. (5/8-18
left hand thread).
b. Tighten hose clamp onto hose.
a. Move unit away from hot air.
b. See Low Coolant Flow
Section.
c. See No Coolant Flow Section.
d. Reference fan section.
e. Clean heat exchanger.
a. Repair leak.
b. Clear obstruction.
c. Refill reservoir.
d. Secure DC+ or DC- connec-
tors on rectifier bridge.
e. Replace pump motor.
f. Repair the pump with S20095-
1 or S20095-3 Pump
Replacement Kit or S20095-2
Pump Rebuild Kit.
Fan operates but there is no
coolant flow.
a. Pump motor failure.
b. Pump head seized (bearing
failure).
a. Replace pump motor.
b. Replace pump head with
S20095-1 or S20095-3 Pump
Replacement Kit.
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.
MAGNUM COOLER 10 & 20
E-4
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
TROUBLESHOOTING
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
E-4
RECOMMENDED
COURSE OF ACTION
Pump operates, but fan does not.
Cooler trips outlet circuit breaker.
a. Internal AC circuit open.
b. Fan blade contacting heat
exchanger.
c. Fan motor failure
a. Circuit overloaded.
b. Cooler electrical component
failure.
a. Secure AC connectors on rec-
tifier bridge.
b. If fan blades are plastic,
replace. Reset fan clearance
and secure fan to motor shaft.
c. Replace fan motor with Fan
Motor and Mount Assembly.
a. Check outlet circuit breaker.
b. Replace suppressor assembly
and rectifier bridge inside of
Cooler.
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.
MAGNUM COOLER 10 & 20
F-1
DIAGRAMS
MAGNUM COOLERS CODES 10266 THRU 10269
F-1
PUMP PRESSURE
SWITCH
B
W
NUMBERS EMBOSSED
*
ON SWITCH HOUSING
ELECTRICAL SYMBOLS PER E1537
COLOR CODE:
- BLACK
B
- WHITE
W
- GREEN
G
N
1*
*
G
N - BROWN
INTERNAL
B
2*
L
3*
W
M
FAN
MOTOR
W
SECOND FAN ON
COOLER 20 AND 20-I
MODELS
B
H3
H2
X2
+
18V
M
H1
X1
W
CONNECTED TO H2 FOR
COOLER 10 AND 20 MODELS
CONNECTED TO H3 FOR
COOLER 10-I AND 20-I MODELS
INPUT:
COOLER 10
115
V
AND
60
COOLER 20
Hz
TO
PUMP
MOTOR
-
COOLER 10-I
AND
COOLER 20-1
M
PUMP
MOTOR
50/60
220
V
Hz
A
S22534
MAGNUM COOLER 10 & 20
F-2
DIAGRAMS
MAGNUM COOLERS CODES 9743 THRU 9746
F-2
COOLER 10
COOLER 10-I
NUMBERS EMBOSSED
*
ON SWITCH HOUSING
COOLER 20
COOLER 20-I
NUMBERS EMBOSSED
*
ON SWITCH HOUSING
115
60
220
50/60
115
60
220
50/60
BLACK
1
V
*
3
WHITE
BROWN
2
INTERNAL
TO
PUMP
Hz
L
V
FAN
MOTOR
M
Hz
+
EXTERNAL
-
PUMP
M
MOTOR
5
LEADS
FOR CODES 9743 THRU 9746
COOLER 10 & 10-I WIRING DIAGRAM
BLACK
1
BROWN
2
INTERNAL
TO
PUMP
V
3
*
Hz
V
WHITE
L
MOTOR
FAN
+
M
M
EXTERNAL
-
PUMP
M
MOTOR
5
LEADS
Hz
FOR CODES 9743 THRU 9746
COOLER 20 & 20-I WIRING DIAGRAM
COOLER 10
COOLER 10-I
NUMBERS EMBOSSED
*
ON SWITCH HOUSING
COOLER 20
COOLER 20-I
115
60
220
50/60
115
60
220
50/60
MAGNUM COOLERS CODES 9984 THRU 9987
BLACK
1*
V
*
3*
Hz
V
Hz
FOR CODES 9984 THRU 9987
COOLER 10 & 10-I WIRING DIAGRAM
BLACK
1*
V
*
3*
Hz
V
Hz
WHITE
L
WHITE
L
MOTOR
MOTOR
FAN
BROWN
FAN
BROWN
2*
2*
+
M
+
M
M
INTERNAL
TO
PUMP
MOTOR
-
INTERNAL
TO
PUMP
MOTOR
10-22-93
S20690
PUMP
M
MOTOR
3
LEADS
-
PUMP
M
MOTOR
3
LEADS
NUMBERS EMBOSSED
*
ON SWITCH HOUSING
FOR CODES 9984 THRU 9987
COOLER 20 & 20-I WIRING DIAGRAM
10-22-93
S20691
NOTES
MAGNUM COOLER 10 & 20
WARNING
Spanish
AVISO DE
PRECAUCION
● Do not touch electrically live parts or
electrode with skin or wet clothing.
● Insulate yourself from work and
ground.
● No toque las partes o los electrodos
bajo carga con la piel o ropa mojada.
● Aislese del trabajo y de la tierra.
● Keep flammable materials away.
● Mantenga el material combustible
fuera del área de trabajo.
● Wear eye, ear and body protection.
● Protéjase los ojos, los oídos y el
cuerpo.
French
ATTENTION
German
WARNUNG
Portuguese
ATENÇÃO
Japanese
Chinese
Korean
Arabic
● Ne laissez ni la peau ni des vête-
ments mouillés entrer en contact
avec des pièces sous tension.
● Isolez-vous du travail et de la terre.
● Berühren Sie keine stromführenden
Teile oder Elektroden mit Ihrem
Körper oder feuchter Kleidung!
● Isolieren Sie sich von den
Elektroden und dem Erdboden!
● Não toque partes elétricas e elec-
trodos com a pele ou roupa molhada.
● Isole-se da peça e terra.
● Gardez à l’écart de tout matériel
inflammable.
● Entfernen Sie brennbarres Material!
● Mantenha inflamáveis bem guarda-
dos.
● Protégez vos yeux, vos oreilles et
votre corps.
● Tragen Sie Augen-, Ohren- und Kör-
perschutz!
● 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.
● Keep your head out of fumes.
● Use ventilation or exhaust to
remove fumes from breathing zone.
● Turn power off before servicing.
● Do not operate with panel open or
guards off.
WARNING
● Los humos fuera de la zona de res-
piración.
● Mantenga la cabeza fuera de los
humos. Utilice ventilación o
aspiración para gases.
● Gardez la tête à l’écart des fumées.
● Utilisez un ventilateur ou un aspira-
teur pour ôter les fumées des zones
de travail.
● Vermeiden Sie das Einatmen von
Schweibrauch!
● Sorgen Sie für gute Be- und
Entlüftung des Arbeitsplatzes!
● Mantenha seu rosto da fumaça.
● Use ventilação e exhaustão para
remover fumo da zona respiratória.
● Desconectar el cable de ali-
mentación de poder de la máquina
antes de iniciar cualquier servicio.
● Débranchez le courant avant l’entre-
tien.
● Strom vor Wartungsarbeiten
abschalten! (Netzstrom völlig öffnen; Maschine anhalten!)
● Não opere com as tampas removidas.
● Desligue a corrente antes de fazer
serviço.
● Não toque as partes elétricas nuas.
● No operar con panel abierto o
guardas quitadas.
● N’opérez pas avec les panneaux
ouverts ou avec les dispositifs de
protection enlevés.
● Anlage nie ohne Schutzgehäuse
oder Innenschutzverkleidung in
Betrieb setzen!
● Mantenha-se afastado das partes
moventes.
● 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.
• World's Leader in Welding and Cutting Products •
• Sales and Service through Subsidiaries and Distributors Worldwide •
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
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