Wassermann WW-33, User Manual

Page: 9 / 16

9 Troubleshooting
Fault Cause Solution
Little or no pressure
builds Oil level below minimum and
air bubble has entered
system during filling Vent press as explained below
Point 9.1
Pressure drops to
zero despite enclosed
cap or piston rises
under pressure Dirty pressure valve Pump strongly with newly filled oil
(recommended oil)
9.1 Guidelines for Venting:
1. Turn press on right side and pump.
2. Nothing? – then remove piston as described below and fill with oil up to top edge of
cylinder:
•
Undo set screw in U-piece
•
Pull lever forwards
•
Pull piston up and out of cylinder
•
Fill with oil (recommended oil)
•
Re-install in reverse order, watching out for two points:
◦
Do not tip the piston
◦
Do not damage the square ring
If the above recommendations do not solve the problem, contact your dental depot
or our service department.
9