Summit SUM-900938 User manual

Plasma Cutter
SUMMIT BRAND TECH : 330.294.9747WWW.SUMMITRACING.COM
SUM-900938
SAFETY
Safe operation and proper maintenance is your
responsibility. We have compiled this operator’s
manual, to instruct you in basic safety, operation and
maintenance of your product to give you the best
possible experience.
Please carefully read this manual before you operate
your unit. This manual is not only for the use of the
machine, but to assist in obtaining the best perfor-
mance out of your unit. Do not operate the unit until
you have read this manual and you are thoroughly
familiar with the safe operation of the unit.
The warranty does not cover improper use,
maintenance or consumables. Do not attempt to alter
or change any piece or part of your unit, particularly
any safety device. Keep all shields and covers in place
during unit operation should an unlikely failure of
internal components result in the possible presence of
sparks and explosions. If a failure occurs, discontinue
further use until malfunctioning parts or accessories
have been repaired or replaced by qualied personnel.
We are dedicated to providing you with the best
possible equipment and service to meet the demanding
projects that you have. We want to go beyond
delivering a satisfactory product to you. That is the
reason we offer technical support to assist you with
your needs should an occasion occur. With proper use
and care your plasma cutter should deliver years of
trouble-free service.
Introduction to your new Plasma Cutter
WARNINGS
High Frequency electromagnetic disturbances:
Certain welding and cutting processes generate High
Frequency (HF) waves. These waves may disturb
sensitive electronic equipment such as televisions,
radios, computers, cell phones, and related
equipment. High Frequency may also interfere with
uorescent lights. Consult with an electrician if
disturbance is noted. Sometimes, improper wire
routing or poor shielding may be the cause.
High Frequency can interfere with pacemakers.
See EMF warnings in following safety section for
further information. Always consult your physician
before entering an area known to have welding or
cutting equipment if you have a pacemaker.
WARNING! Persons with pacemakers should
not weld, cut or be in the welding area until they
consult with their physician. Some pacemakers are
sensitive to EMF radiation and could severely
malfunction while welding or while being in the
vicinity of someone welding. Serious injury or death
may occur!
WARNING! Do not weld on or cut galvanized steel,
stainless steel, beryllium, titanium, copper,
cadmium, lead or zinc without proper respiratory
equipment and or ventilation.

SUMMIT BRAND TECH : 330.294.9747WWW.SUMMITRACING.COM
WARNINGS CONTINUED
WARNING! Do not weld or cut around Chlorinated
solvents or degreasing areas. Release of Phosgene
gas can be deadly. Consider all chemicals to have
potential deadly results if welded on or near metal
containing residual amounts of chemicals.
WARNING! Keep all cylinders upright and chained
to a wall or appropriate holding pen. All cylinders
have a potential explosion hazard. When not in use,
keep capped and closed. Store chained so that
overturn is not likely. Transporting cylinders
incorrectly can lead to an explosion. Do not attempt
to adapt regulators to t cylinders. Do not use faulty
regulators. Do not allow cylinders to come into
contact with work piece or work. Do not weld or
strike arcs on cylinders. Keep cylinders away from
direct heat, ame and sparks.
WARNING! Electrical shock can kill. Make sure all
electrical equipment is properly grounded. Do not
use frayed, cut or otherwise damaged cables and
leads. Do not stand, lean or rest on ground clamp.
Do not stand in water or damp areas while welding
or cutting. Keep work surface dry. Do not use welder
or plasma cutter in the rain or in extremely humid
conditions. Use dry rubber soled shoes and dry
gloves when welding or cutting to insulate against
electrical shock. Turn machine on or off only with
gloved hand. Keep all parts of the body insulated
from work, and work tables. Keep away from direct
contact with skin against work.
WARNING! All work cables, leads, and hoses pose
trip hazards. Be aware of their location and make
sure all personnel in area are advised of their
location. Taping or securing cables with appropriate
restraints can help reduce trips and falls.
WARNING! Fire and explosions are real risks while
welding or cutting. Always keep re extinguishers
close by and additionally a water hose or bucket of
sand. It is a good idea to have someone help watch
for possible res while you are welding. Sparks and
hot metal may travel a long distance. They may go
into cracks in walls and oors and start a re that
would not be immediately visible.
WARNING! Metal is hot after welding or cutting!
Always use gloves and or tongs when handling hot
pieces of metal. Remember to place hot metal on
re-proof surfaces after handling. Serious burns and
injury can result if material is improperly handled.
OPERATION
WARNING! Faulty or poorly maintained equipment
can cause injury or death. Proper maintenance is
your responsibility. Make sure all equipment is
properly maintained and serviced by qualied
personnel. Do not abuse or misuse equipment.
WARNING! Keep all covers in place. A faulty
machine may shoot sparks or may have exploding
parts. Touching uncovered parts inside machine
can cause discharge of high amounts of electricity.
Do not allow employees to operate poorly serviced
equipment. Always check condition of equipment
thoroughly before start up. Disconnect unit from
power source before any service attempt is made
and for long term storage or electrical storm.
STEP 1 Before attempting to use this unit on an
actual project or object of value, practice on a
similar material as there is a moderate learning
curve necessary before achieving prociency in
cutting.
STEP 2 Place the ground cable clamp on a clean,
bare area of your work piece. Scrape, wire brush, le
or grind a bare area if necessary to achieve a good
ground.
STEP 3 Set air pressure to the appropriate pressure
with the knob located at the upper right side of the
front panel. The pressure indicating gauge is located
directly above the air pressure knob and is generally
set at 60 to 70 psi . The actual pressure is required
is dictated by the thickness of the metal being cut.
Lower pressure or thinner metals, higher pressure
for thicker or harder metals.
STEP 4 Set the output amperage knob located at the
center of the upper panel to an appropriate setting
base on the thickness of the metal being cut. Lower
amperage for thinner metals, higher amperage for
thicker metals, keep in mind that more is not always
better as too high of an amperage setting will result
in overheating of the unit and excessive molten
discharge from the cut.
STEP 5 Make sure that all your safety wear is in
place and the area is completely free of ammable
material.
STEP 6 The best results are achieved by holding the
tip at a 90°angle to the cut line

ASSEMBLEY
SUMMIT BRAND TECH : 330.294.9747WWW.SUMMITRACING.COM
OPERATION
STEP 7 With practice, you will be able to exercise
precise control over this extremely powerful device,
harnessing it’s energy to create clean, precise and
intricate cuts in many forms of steel and iron up to
3/8” thick.
STEP 8 While you practice, experiment with differ-
ent speeds. You will nd that thinner materials will
allow a faster motion while thicker materials will
require a slower motion to achieve a through cut.
STEP 9 A good form of practice is to attempt a series
of straight lines while creating the cleanest edge with
a minimum of molten material remaining on the cut
edge. This minimizes the cleanup of the edge with
a grinder or le. Another excellent technique is to
practice cutting your initials out of a piece of steel.
It is extremely important that the air supply be
clean and dry. A separate moisture trap , water/oil
separator or desiccant system should be used. The
plasma cutter has a built - in “last-chance”
moisture separator which requires draining each
time you have competed work the unit. This
feature is located on the underside rear corner and
is drained by keeping the unit level and gently
pulling down on the drain tting.
Constantly inspect the torch tip for excessive
erosion, molten metal accumulation or burning. If
damaged, it must be replaced.
Before each use, inspect all electrical connections,
cables, supply line, torch, air supply, housing and
controls for damage. If any damage or ware is noted,
DO NOT USE THE UNIT.
Always store the unit in a safe , clean and dry
environment.
MAINTENANCE
TROUBLE SHOOTING