Maintenance | Operation Manual C 2214 |
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9.2 Check
9.2.1 Inlet valve check
The inlet valve is the main safety component of the whole chlorination plant. That's why it has to be checked
particularly carefully. For the check you need dry and oil-free compressed air or nitrogen. Using an edgeless
object (e.g.a biro without reservoir) press in the ball of the inlet valve and then let it off in order to make sure
that it is properly seated. Connect the inlet valve using a hose to the compressed air and immerse it in water.
Do not immerse the pressure gauge!
N2
PI
Fig. 17: Checking the inlet valve
No bubbles must rise either at high pressures (e.g. 16 bar) or at low pressures (e.g. 0.5 bar). After the check
the inlet valve is dried thoroughly and then inserted into the vacuum part by turning it slightly. The O-ring has
to be lubricated with silicone grease. The four screws for fixing the inlet valve are also exchanged, greased with
fitting grease or sprayed with Teflon and tightened slightly.
9.2.2 Checking the complete vacuum regulator
The whole vacuum regulator must be checked on vacuum tightness. For this purpose the vacuum regulator is
mounted to the wall holder or a closed chlorine cylinder and the ejector is connected using a metering tubing.
One end of a transparent tubing is loosely put on the blow-off connection and the other end is immersed in
water.
After switching on the ejector, the water level in the tubing rises only a few centimeters and then remains con-
stant. The ball in the flow meter rises, then drops slowly and indicates zero after a short time. If the flow meter
does not indicate zero, there must be an untight spot where air finds its way into the system.
