COATS Kit 8184553, Nitrogen Inflation System - Manual (Page 5)

4. Next, remove the ELL fitting and replace with the
1/4-inch NPT pipe plug fitting from the kit.
5. Next, install the clear plastic tube to the ELL.
Install a quick coupling fitting as required for connecting
to nitrogen. Connect the nitrogen supply and observe
the input pressure in the surge tank from the gauge
mounted on top of the tank. If the pressure exceeds
150 PSI, a pressure regulator must be added to prevent
the pressure relief from continuous activation caused
by the over pressure.
Pressure Gauge on Surge Tank
Nitrogen connection without regulator.
6. A pressure regulator to reduce the input nitrogen
pressure is available from COATS as p/n 8183424 or
one can be purchased from “Grainger” as p/n 4ZM14
(0-150 PSI adjustable). After installing the regulator,
adjust the pressure for a reading of 145 PSI on the
surge tank gauge.
A pressure regulator is directional sensitive
and must be installed correctly to adjust
pressure.
Nitrogen connection with in-line regulator.
7. Reconnect the air pressure supply to the machine
and the nitrogen supply to the machine and inspect for
leaks. If no leaks exist, test the machine for full function
before returning the machine to operation.
CAUTION
5