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4.3
Dosing unit
4.3.1 Overview
1 Dry ice container seal
2 Dosing unit screw
3 Dosing flange, top
4 Dosing flange, bottom
5 Compressed air flange screw
6 Quick-action connection of pressure control valve
7 Quick-action connection of control air
8 Fastening screw of water separator
4.3.2 Replacing the dosing disk
Unpressurize the appliance.
Disconnect the mains plug from the socket.
Remove the panels.
Open the quick-action connection at the pressure control valve
and pull off the compressed air hose.
Open the quick-action connection at the control air connection
and pull off the compressed air hose.
Unscrew 3 fastening screws at the compressed air flange.
Unscrew 2 fastening screws at the water separator.
REmove the pipe module and put it aside.
1 Dry ice container seal
2 Dosing unit screw
3 Dosing flange, top
Remove the seal.
Unscrew 4 screws of the dosing unit.
Remove the upper dosing flange.
10
English 5.906-469.0 Rev. 00 (08/08)
1 Dosing disk
2 Towing arm
Remove the dosing disk
1 Dry ice pellet inlet opening
2 Upper dosing flange, inner side
3 Compressed air inlet opening
4 Insert with O-ring
1 Dry ice pellet outlet opening for dry ice emptying
2 Lower dosing flange, inner side
3 Insert with O-ring
4 Dry ice jet outlet opening
Note: The inserts are movable in the dosing flanges. They are
pressed on the dosing disk by the compressed air.
When changing the inserts, you must grease the O-rings before in-
stalling them (using PFAE grease 100g 6.288-079.0 or PFAE
grease 5g 6.288-088.0, for example.) This grease is also used for
the nozzle thread. It is contained in the scope of delivery of the tool
kit. Do not use silicon grease.
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