Unist 4210 Series, Operation Manual

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8. Remove the 1.2 mm ID O-ring from the end of the
bore in the spray nozzle body. The O-ring may drop out
of the block simply by turning the block upside down with
the nozzle facing up. If it does not, place the nozzle on
a piece of paper with the spray tip facing up. Using a
compressed air gun, shoot compressed air down the tip
of the nozzle. Check the paper or the inside of the nozzle
body for the O-ring. If that doesn’t work, use a thin piece
of wire and press it down the nozzle tip to free the
O-ring.
9. Clean out the inside of the spray nozzle body with a
rag and ensure it is free of debris or any other foreign
matter.
10. Place the spray nozzle body on a work surface and
support it so the nozzle is facing down. Be sure not to
damage the nozzle tip.
6. Remove the 1” OD O-ring from the spray nozzle body.
It may be helpful to use a dental pick or similar tool to
gently loosen the O-ring from the bore.
7. Remove the 3 mm ID O-ring from the bore in the spray
nozzle body. It may be helpful to use a dental pick or
similar tool to gently loosen the O-ring from the bore.
Rebuild Kit Instructions
Figure 44: Removing 1” OD O-ring
Figure 45: Removing 3 mm ID O-ring
Figure 46: Removing 1.2 mm ID O-ring
Figure 43: Removing spray nozzle insert
Attention: Use caution when using a compressed
air source. Only qualified individuals should make
this connection. Failure to do so safely could cause
damage to property and personal injury.