PRONAR PT512, Operator'S Manual

Page: 115 / 139

CHAPTER 5 Pronar PT512
5.19
Scope of maintenance
Tilt out drain valve stem (1) placed in lower part of the tank (2) – the tank is
placed on brackets of right longitudinal of lower frame.
The compressed air in the tank will cause the removal of water to the
exterior.
When the stem is released, valve should be automatically closed and air
removal from tank should be stopped.
If valve stem does not return to its position, then the whole drain valve
must be unscrewed and cleaned, or replaced (if damaged) with new
one – see chapter 5.3.5.
Drain water from air reservoir:
•
every 7 days of use.
5.3.5 CLEANING THE DRAIN VALVE
Scope of maintenance
Completely reduce the pressure in the air reservoir.
Reduction of pressure in tank is achieved by tilting the drain valve
stem.
Unscrew the valve.
Clean valve and blow with compressed air.
Replace the copper seal with new one.
Screw in the valve, fill the air reservoir and check its tightness.
DANGER
Before dismantling the drain valve, release air from the tank.