Replacing The Cover Gasket - Buhnen Hb 720 R Originalbetriebsanleitung

Servicing/Maintenance
6.5

Replacing the cover gasket

Tools needed
Fig. 6.5/1:
There must be no melt at all in the tank when the nozzle end is replaced. Therefore
discharge the melt completely, e.g. into a collecting vessel.
1. Let the device heat up thorougly. Continue activating the trigger until the tank is com-
pletely empty.
2. Disconnect the compressed-air supply.
3. Disassemble the entire closure unit (see section 6.7).
4. Release the fastening screws (D1) of the sealing plate (D2) with the Phillips screwdri-
ver. Carefully remove the sealing plate.
5. Carefully remove the gasket (D5) from the pressure plate (D6).
6. Set the new gasket in the pressure plate in such a way that it ts evenly all over.
7. Mount the sealing plate. Observe the position of the washer (D4) and the O-ring (D4)
of the ventilation opening. Tighten the counter nuts (D5) alternately.
H2200XM_DE-EN_200720.indd 30
• 1 Phillips screwdreiver size 1
Position carefully when assembling
Replacing the cover gasket
30
GB
26.07.21 08:55