6 - Maintenance
81
Feed Pipe Snap-Lock Assembly
Disassembly
1. Screw the union nut (A) completely off.
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.
Initial assembly of fittings
μ
ATTENTION! This method can only be used for pipes not fitted
into pipe clamps.
1. Fit the barbed lock ring (C) to the feed pipe with barb pointing
away from pipe opening.
2. Fit the oiled O-ring (B) on top of the lock ring.
3. Screw the union nut (A) partly on the hose barb.
4. Press the feed pipe and hose barb together.
5. Tighten the union nut (A) by hand.
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.
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