ESAB Fuse Assembly User manual

ESAB
Brand
ESAB
Model
Fuse Assembly
Type
User manual

ESAB Fuse Assembly is designed to protect water-cooled tig welding torches against electrical overload and burnout due to water supply failure. It is shipped ready-to-use with a 25-ampere, 250-volt fuse link inserted, and four extra fuse links are supplied. The fuse assembly can be used with currents up to and including 250 amperes. For welding currents over 250 amps, a heavy-duty fuse link (accessory) should be installed. The fuse assembly is easy to install and replace. To replace a blown link, first make sure the power is off.

ESAB Fuse Assembly is designed to protect water-cooled tig welding torches against electrical overload and burnout due to water supply failure. It is shipped ready-to-use with a 25-ampere, 250-volt fuse link inserted, and four extra fuse links are supplied. The fuse assembly can be used with currents up to and including 250 amperes. For welding currents over 250 amps, a heavy-duty fuse link (accessory) should be installed. The fuse assembly is easy to install and replace. To replace a blown link, first make sure the power is off.

F-11-103-E
August, 2000
INSTRUCTIONS for
FUSE ASSEMBLY
Part No. 45V34
These INSTRUCTIONS are for experienced operators. If you are not fully familiar with the principles of operation and
safe practices for arc welding equipment, we urge you to read our booklet, “Precautions and Safe Practices for Arc
Welding, Cutting and Gouging,” Form 52-529. Do NOT permit untrained persons to install, operate, or maintain this
equipment. Do NOT attempt to install or operate this equipment until you have read and fully understand these
instructions. If you do not fully understand these instructions, contact your supplier for further information.
DESCRIPTION
The fuse assembly is designed to protect water-cooled tig
welding torches against electrical overload and burnout due
to water supply failure.
The fuse assembly is shipped ready-to-use. Fuse link 54N26
has been inserted in the fuse body assembly (45V33). Four
(4) extra fuse links are supplied. Use these links when weld-
ing with currents up to and including 250 amperes.
When using welding currents over 250 amps, you should in-
stall the heavy-duty fuse link 54N30 (accessory).
INSTALLATION (See Fig. 1)
(NOTE: If the fuse assembly is to be used with a torch having
a ‘C’ size female fitting on the power cable, an adaptor, 54N27,
will be required. This adaptor replaces the coupling 11N19 in
the fuse assembly.)
1. Twist off the fuse casing (54N21). Slip the torch power cable
through the casing and screw into coupling (11N19).
Tighten cable nut and replace casing.
2. Connect the welding power cable from the power source
to the fuse assembly lug (180W41).
3. Attach a 1/4-in. I.D. vinyl hose (such as Part No. 40V76) to
the fuse assembly's water-drain nipple by removing the
fitting from one end of the hose and securing it with the
hose clamp (92Z34) supplied. Lead the hose to an open
or free-running drain.
NOTE: The hose clamp (92Z34) is dimensioned for use with
1/4-in. I.D. x 3/32-in. wall thickness vinyl hose. If rubber hose
is used, a larger clamp may be required.
FUSE LINK REPLACEMENT
The fuse links are brass-plated to resist corrosion and are
recommended when replacement is necessary. Standard 25-
ampere, 250-volt (or heavy-duty, 60-ampere, 250-volt) links
may be used in an emergency, but are not recommended for
regular operation.
To replace a blown link:
1. First make sure the power is off.
2. Remove the fuse assembly casing and slide it back over
the torch power cable.
3. Using two wrenches, remove the torch power cable nut
from the coupling (11N19). Then remove the coupling from
the fuse body assembly (45V33). The two wrenches are
needed to keep the fuse body stationary when removing
the coupling because all threads are left hand.
4. Remove the fuse body assembly (45V33) from the current
conductor body.
5. Remove the two machine screws from each end of the
fuse body assembly and then remove the fuse link.
6. Insert a new fuse link through the fuse body. Bend both
ends of the fuse link to a 90-deg. angle at about 1/4-in.
from each end . Replace the two machine screws through
the link and tighten.
7. Check the two gaskets (54N25) on the fuse body and re-
place if necessary.
8. Replace the fuse body in the current conductor body. Re-
place the coupling, torch power cable and outer casing.
Be sure this information reaches the operator.
You can get extra copies through your supplier.
Replacement Parts Data
(See Insert "A")
FUSE BODY ASSEM.
COUPLING
11N19
GASKET - 54N25
INSERT “A” - FUSE BODY ASSEMBLY, P/N 45V33
SUPPLIED
(4) FUSE LINK - 54N26
HOSE CLAMP - 92Z34
(2) GASKET - 54N25
* When ordering replacement links, Part No. 54N26
consists of 5 links in a package
FIG. 1 - Fuse Assembly - 45V34
ACCESSORIES
Part No. Description
54N27 Adaptor - used in place of 11N19 when torch
power cable has “C” size female fitting.
54N30 Heavy-duty fuse link for currents above 250
amps.
F-11-103-E 8/2000 5C Printed in U.S.A.
POWER CABLE
54N29 (INCLUDED IN
45V35)
FUSE LINK
54N26*
FUSE BODY
45V32
(2) BRASS SCREW - No. 6—32 x 3/16"
FUSE CASING - 54N21
CURRENT CONDUCTOR
BODY ASSEM. - 45V35
LUG - 180W41
(INCLUDED IN 45V35)
TORCH POWER CABLE
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ESAB Fuse Assembly User manual

ESAB
Brand
ESAB
Model
Fuse Assembly
Type
User manual

ESAB Fuse Assembly is designed to protect water-cooled tig welding torches against electrical overload and burnout due to water supply failure. It is shipped ready-to-use with a 25-ampere, 250-volt fuse link inserted, and four extra fuse links are supplied. The fuse assembly can be used with currents up to and including 250 amperes. For welding currents over 250 amps, a heavy-duty fuse link (accessory) should be installed. The fuse assembly is easy to install and replace. To replace a blown link, first make sure the power is off.

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