COATS APX Rim Clamp Tire Changer - Manual (Page 22)

18 • Important: Always read and follow the operating instructions.
Pressure Limiter Maintenance
Operating a tire changer with a defective,
improperly adjusted, or by-passed pressure
limiter could cause an operator to acciden-
tally over pressurize a tire, resulting in a tire
explosion with severe injury or death to the
operator or bystanders.
Always be sure that the pressure limiter is
present and is operating properly.
Never inflate tire above manufacturer's rec-
ommended pressure after bead is seated.
Pressure limiter is set at 60 PSI. Any
required inflation above 60 PSI should be
performed in an inflation chamber/safety
cage or securely mounted on the vehicle if
an inflation chamber is not available. A tire
explosion may cause personal injury or
death to operator or bystanders.
The pressure limiter helps prevent inflation of stan-
dard size or larger tires or tubes beyond 60 PSI to min-
imize risk of explosion. This device is for the safety of
the operator and bystanders. Proper operation of the
pressure limiter is essential to safe operation of the
machine.
Check operation of the pressure limiter as shown and
described below at least monthly:
1. Remove tires and/or wheels from the machine.
2. Connect the inflation hose to an empty service
tank with a pressure gauge (gauge should read 0). Use
a certified tank with at least 20 0 PSI pressure rating.
3. Depress inflation pedal to position 1 to start air-
flow through the hose and into the tank. Maintain a
steady pressure for constant flow.
4. Watch the rising pressure on the tank gauge and
the gauge on the machine. Machine gauge should
cycle between check and inflation pressures while
tank gauge climbs steadily. As tank pressure reaches
60 PSI, the pressure limiter should stop the airflow
automatically. Both gauges should read 60 PSI ± 5 PSI.
5. Release inflation pedal. Check manual release
valve function by pressing the button and releasing
pressure from the tank until it reaches 50 PSI.
Disconnect inflation hose, and release air inside tank.
6. Replace pressure limiter if it fails to cycle properly
during inflation, if it fails to shut air supply off at 60 PSI,
or if it malfunctions in any other way. Do not operate
machine with a faulty pressure limiter.
Air Service Tank
Watch Pressure
on Both Gauges
Tire Changer
Inflation Hose
Connected to Tank
IMPORTANT: For models with “Bead
Sealing Only” on the tire changer,
maximum limiter pressure is 15 PSI
(NOT 60 PSI).