CAT820R
4
Rev. 12/18/15
Drain Daily
Regulator
Oiler
Quick Coupler
Leader
Hose
Nipple
Do Not Install
Quick Coupling
Here
Nipple
Filter
Air Supply
Whip Hose
AIR SUPPLY
Tools operate on a wide range of air pressures. It is recommended
that air pressure measures 90 psig at the tool with the trigger fully
depressed and no load applied to the tool. Higher pressure (over 90
psig; 6.2 bar) raises performance beyond the rated capacity of the
tool, which will shorten tool life and could cause injury.
Always use clean, dry air. Dust, corrosive fumes and/or water in the
air line will cause damage to the tool. Drain water from air lines
and compressor prior to running tool. Clean the air inlet filter screen
weekly. The recommended hookup procedure can be viewed in the
above figure.
The air inlet used for connecting air supply has standard 1/4" NPT.
Line pressure should be increased to compensate for unusually long
air hoses (over 25 feet). Minimum hose diameter should be 3/8" I.D.
and fittings should have the same inside dimensions and be tightly
secured.
Ensure an accessible emergency shut off valve has been installed in
the air supply line and make others aware of its location.
LUBRICATION
Lubricate the air motor daily with high quality air tool oil. If no air
line oiler is used, run 1/2 oz. of oil through the tool. The oil can
be squirted into the tool air inlet or into the hose at the nearest
connection to the air supply, then run the tool. A rust inhibitive oil is
acceptable for air tools.
WARNINg:
After an air tool has been lubricated, oil will discharge
through the exhaust port during the first few seconds of operation.
The exhaust port must be covered with a towel before applying air
pressure to prevent serious injury.
TROUBLESHOOTINg
Other factors outside the tool may cause loss of power or erratic
action. Reduced compressor output, excessive drain on the air
line, moisture or restrictions in air pipes or the use of hose
connections of improper size or poor conditions may reduce air
supply. Grit or gum deposits in the tool may cut power and may be
corrected by cleaning the air strainer and flushing out the tool with
gum solvent oil or an equal mixture of SAE #10 and kerosene. If
outside conditions are in order, disconnect tool from hose and take
tool to your nearest authorized service center.
OPERATION
OPERATION NOTE: Always shut off air supply, drain hose of air
pressure and disconnect tool from air supply when not in use,
before changing accessories or when making repairs.
NoTE: Before using, test cut-off wheel by briefly running the
tool at full throttle under a barrier (such as under a heavy work
table) to stop any possible broken wheel parts.
always wear impact-resistant eye and face
protection to guard against flying rust and chips
(users and bystanders).
Even small projectiles can
injure eyes and cause blindness. A cut-off wheel that
breaks can cause very serious injury. Daily measure the
tool speed with a tachometer to make sure the speed
is not greater than the RPM marked on the cut-off
wheel.
Never use a cut-off wheel marked with a
speed lower than the tool speed.
When using the cut-off tool, be careful not to exert excessive force.
Too much force could be hazardous if it causes the tool spindle to
bend or break. The burning of the work piece or excessive speed
reduction indicates too much force being applied. Start the tool off
the work, set it down on the work evenly and move in the direction
desired to make the cut. When finished cutting, lift off the work
before stopping the motor. Always use the required wheel guard to
prevent injury from broken cutting parts.
If a guard has withstood
a wheel breakage, discontinue its use and replace it with a
new guard.
It may be damaged. Position the guard between the
cut-off wheel and the operator. Use barriers to protect others from
wheel fragments and sparks.
WaRNiNG: Correct cut-off wheel mounting is necessary to
prevent injury from broken wheels. Do not use chipped or
cracked cut-off wheels. Cut-off wheels should be a free fit on
the spindle to prevent stress at the hole. Use only wheel collars
that come with the tool for mounting the cut-off wheel. flat
washers or other adapters may over stress the wheel. Tighten
the wheel on the spindle to prevent spin off when the tool is
turned off.
WARNINg: NEVER OPERATE THIS TOOL WITHOUT
REQUIRED DISC COVER/gUARD IN PLACE.
Ensure an accessible emergency shut off valve has been installed in
the air supply line and make others aware of its location.
To Assemble Cutting Wheel:
1. Use #41 double ended spanner to hold #30 spindle.
2. Use #40 hex wrench to remove #37 screw.
3. Use #39 spanner wrench to remove #36 nut and #35 washer.
4. Place cutting wheel onto spindle end and reverse steps 1-3.
