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6 - Maintenance
Nozzle Tubes and Fittings
Poor sealings are usually caused by:
• Missing O-rings or gaskets
• Damaged or incorrectly seated O-rings
• Dry or deformed O-rings or gaskets
• Foreign objects
In case of leaks:
DO NOT overtighten. Disassemble, check condition and position of O-
ring or gasket. Clean, lubricate and reassemble.
The O-ring must be lubricated ALL THE WAY AROUND, before fitting it
on to the nozzle tube. Use a non-mineral lubricant.
For AXIAL connections, a little mechanical leverage may be used.
For RADIAL connections, only tighten by hand.
Feed Pipe Clamp Assembly
A feed pipe can be removed from the pipe clamps the following way:
1. Use a flat bladed screwdriver to prize the cover off the first corner
(A).
2. Hold the clamp top with your hand and prize off the opposite
corner (B) with the screwdriver.
3. Prize off the other side of the pipe clamp with the screwdriver.
4. Take out the feed pipe.
Feed Pipe Snap-Lock Assembly
Disassembly
1. Unscrew the union nut (A) completely.
2. Pull the feed piping and hose barb apart.
3. Take out the O-ring (B).
4. Inspect and oil O-ring (B). Change the O-ring (B) if worn, before
reassembly.
Reassembly
1. Check that the barbed lock ring (C) is fitted to the feed pipe with
barb pointing away from pipe opening.
2. Fit the oiled O-ring (B) on top of the lock ring (C).
3. Push the feed pipe and hose barb together.
4. Screw the union nut (A) on the hose barb and tighten union nut
(A) by hand.
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