When replacing or servicing the hydraulic system, the unit must be de-
gassed. Take appropriate safety precautions when venting gasses.
1. Start with the inlet and outlet valves open, the vent line valve closed
and the nozzle not connected to any tank or vehicle.
2. Close the inlet valve(s) on the pipework connecting to the post.
3. Open the vent line valve.
4. When the gas in the lines has vented, press the Start button to open
the solenoid valve.
5. When the remaining gas has vented, either wait for the solenoid to time
out or press the Stop button.
6. When there is no pressure left in the system, close the inlet, outlet and
vent line valves.