Kunststoffschweißtechnik
Maintenance, care and repair
Chapter 8
07.02.13
Working Instructions WIDOS 25000 mobile
Page 56 of 116
8.7. How to vent the hydraulic cylinders
Venting the hydraulic cylinder is not required, if
-
the hoses have been disconnected from the quick-action couplings at the control unit
because the remaining oil in the hose is being kept by valves and for this reason no air
can enter.
The hydraulic cylinder
must be vented
if
-
there has been too little oil in the tank and air has been attracted.
-
there were leaky spots at the hoses or in the connections.
-
the hoses were unscrewed from the basic machine.
Eliminate the cause of the air entrance.
Open the machine completely.
First unscrew the lower „vent screw for closing“.
Connect the transparent venting hose and insert it in the collecting vessel of the aggregate.
Close until there is no more air visible in the venting hose, then tighten again the vent
screw.
Close the machine completely.
Unscrew the lower „vent screw for opening“.
Connect the transparent venting hose and insert it in the collecting vessel of the aggregate.
Open until there is no more air visible in the venting hose, then tighten again the vent
screw.
8.8. Protect machine parts against corrosion
In case of air humidity of > 85 % and / or high temperatures you must treat the untreated steel
parts of the machine with anti-corrosive protecting agent (e.g. AVILUB NCI 9840).
