38
www.eta.co.at
Grate ash screw
Installation
9.3
Grate ash screw
Removing the cover of the grate ash screw
Remove the cover from the boiler.
Fig. 9-5: Cover
Remove the maintenance cover.
Fig. 9-6: Maintenance cover
Installing the grate ash screw
Affix the seal to the duct of the grate ash screw.
Fig. 9-7: Seal
Attach screws M8 x 20 to the inside of the combustion
chamber to fasten the duct.
Fig. 9-8: Grate ash screw duct
Secure the end of the duct (in the direction of the heat
exchanger) with 4 M8 x 20 screws onto the underside
of the combustion chamber.
Make sure not to damage the seal when installing
the duct.
Insert the feather key in the groove and align the drive
stub of the heat exchanger ash screw to the groove in
the drive. Lubricate the drive stub and push the drive
onto the grate ash screw.
Fig. 9-9: Drive