136
Fig. 6.5
6. Now re move the cover on the bottom valve using a 19 mm open-ended spanner. Open the valve
by turning it counter-clockwise as far as it will go using a 5 mm Allen key. The valve is naw open. lf
the valve is not opened fully, the system may malfunction and suffer damage. Screw the cover back
on to the bottom valve and tighten it well to ensure that it is properly sealed. See Fig.6.6.
Fig. 6.6
Important! The conical ring on the valve has an important sealing function together with the sealing seat
in the caps. Ensure that you do not damage the cone and that you keep the cap free of dirt and dust.
7. After completing steps 1- 6, check that all the connections are sealed correctly using leak detection
spray or soap suds. lf any bubbles form, the system has a leak and the screw connectors must be
retightened using an open- ended spanner.
8. Start the equipment sa that the operating pressures build up inside it. Check all the connectors
4
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