Miller Watertank L, PU 301 Owner's Manual
OM-180 231B 2015−08
Description
Cooling System
Watertank L
(PU 301)
Visit our website at
www.MillerWelds.com
File: Accessory
From Miller to You
Thank you and congratulations on choosing Miller. Now you can get
the job done and get it done right. We know you don’t have time to do
it any other way.
That’s why when Niels Miller first started building arc welders in 1929,
he made sure his products offered long-lasting value and superior
quality. Like you, his customers couldn’t afford anything less. Miller
products had to be more than the best they could be. They had to be the
best you could buy.
Today, the people that build and sell Miller products continue the
tradition. They’re just as committed to providing equipment and service
that meets the high standards of quality and value established in 1929.
This Owner’s Manual is designed to help you get the most out of your
Miller products. Please take time to read the Safety precautions. They
will help you protect yourself against potential hazards on the worksite.
We’ve made installation and operation quick
and easy. With Miller you can count on years
of reliable service with proper maintenance.
And if for some reason the unit needs repair,
there’s a Troubleshooting section that will
help you figure out what the problem is. The
Miller is the first welding
equipment manufacturer in
the U.S.A. to be registered to
the ISO 9001 Quality System
Standard.
parts list will then help you to decide the
exact part you may need to fix the problem.
Warranty and service information for your
particular model are also provided.
Working as hard as you do
− every power source from
Miller is backed by the most
hassle-free warranty in the
business.
Miller Electric manufactures a full line
of welders and welding related equipment.
For information on other quality Miller
products, contact your local Miller distributor to receive the latest full
line catalog or individual specification sheets. To locate your nearest
distributor or service agency call 1-800-4-A-Miller, or visit us at
www.MillerWelds.com on the web.
Mil_Thank 2009−09
TABLE OF CONTENTS
SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING 1.................................
1-1. Symbol Usage 1.......................................................................
1-2. Cooling Equipment Hazards 1............................................................
1-3. Additional Symbols For Installation, Operation, And Maintenance 1.............................
1-4. California Proposition 65 Warnings 2......................................................
1-5. Principal Safety Standards 2.............................................................
SECTION 2 − SPECIFICATIONS 3..............................................................
2-1. Serial Number And Rating Label Location 3................................................
2-2. Specifications 3........................................................................
2-3. Coolant Requirements 3................................................................
SECTION 3 − INSTALLATION 4................................................................
3-1. Connections 4.........................................................................
SECTION 4 − MAINTENANCE AND TROUBLESHOOTING 5.......................................
4-1. Routine Maintenance 5.................................................................
4-2. Coolant Maintenance 5.................................................................
4-3. Troubleshooting 6......................................................................
SECTION 5 − ELECTRICAL DIAGRAMS 6.......................................................
SECTION 6 − PARTS LIST 8...................................................................
SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING
s
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Protect yourself and others from injury — read, follow , and save these important safety precautions and operating instructions.
1-1. Symbol Usage
coolers 2013-10
DANGER! − Indicates a hazardous situation which, if
not avoided, will result in death or serious injury. The
possible hazards are shown in the adjoining symbols
or explained in the text.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury. The possible
hazards are shown in the adjoining symbols or explained in the text.
NOTICE − Indicates statements not related to personal injury .
1-2. Cooling Equipment Hazards
The symbols shown below are used throughout this manual
to call attention to and identify possible hazards. When you
see the symbol, watch out, and follow the related instructions
to avoid the hazard. The safety information given below is
only a summary of the more complete safety information
found in the Safety Standards listed in Section 1-5. Read and
follow all Safety Standards.
Only qualified persons should install, operate, maintain, and
repair this unit.
During operation, keep everybody, especially children, away.
ELECTRIC SHOCK can kill.
Touching live electrical parts can cause fatal shock
or severe burns. The input power circuit and machine
internal circuits are also live when power is on
Incorrectly installed or improperly grounded equip
ment is a hazard.
Do not touch live electrical parts.
Disconnect input power or stop engine before installing or
servicing this equipment. Lockout/tagout input power according to
OSHA 29 CFR 1910.147 (see Safety Standards).
Properly install, ground, and operate this equipment according to
its Owner’s Manual and national, state, and local codes.
Always verify the supply ground − check and be sure that input
power cord ground wire is properly connected to ground terminal in
disconnect box or that cord plug is connected to a properly
grounded receptacle outlet.
Indicates special instructions.
This group of symbols means Warning! Watch Out! ELECTRIC
SHOCK, MOVING P ARTS, and HOT PARTS hazards. Consult symbols and related instructions below for necessary actions to avoid the
hazards.
Keep cords dry, free of oil and grease, and protected from hot metal
and sparks.
Frequently inspect input power cord and ground conductor for
damage or bare wiring – replace immediately if damaged – bare
wiring can kill.
Turn off all equipment when not in use.
Use only well-maintained equipment. Repair or replace damaged
parts at once. Maintain unit according to manual.
Keep all panels and covers securely in place.
HOT PARTS can burn.
HOT PARTS can burn.
Do not touch hot parts bare handed.
Do not touch hot parts bare handed.
Allow cooling period before working on equip-
Allow cooling period before working on equip-
ment.
ment.
To handle hot parts, use proper tools and/or
To handle hot parts, use proper tools and/or
wear heavy, insulated welding gloves and
wear heavy, insulated welding gloves and
clothing to prevent burns.
clothing to prevent burns.
FLYING METAL or DIRT can injure eyes.
Wear approved safety glasses with side
shields even under your welding helmet.
1-3. Additional Symbols For Installation, Operation, And Maintenance
FALLING EQUIPMENT can injure.
Use equipment of adequate capacity to lift and
support unit.
If using lift forks to move unit, be sure forks are
long enough to extend beyond opposite side of
unit.
Keep equipment (cables and cords) away from moving vehicles
when working from an aerial location.
Follow the guidelines in the Applications Manual for the Revised
NIOSH Lifting Equation (Publication No. 94−110) when manually lifting heavy parts or equipment.
OVERUSE can cause OVERHEATING
Allow cooling period; follow rated duty cycle.
Do not block or filter airflow to unit.
MOVING PARTS can injure.
Keep away from moving parts such as fans.
Keep all doors, panels, covers, and guards
closed and securely in place.
Have only qualified persons remove doors, panels, covers, or
guards for maintenance and troubleshooting as necessary.
Reinstall doors, panels, covers, or guards when maintenance is
finished and before reconnecting input power.
OM-180 231 Page 1
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