Checking The Inside Of The Boiler Door - Viessmann Vitoflex 300-RF series Service And Maintenance Instructions

Vitoflex 300-RF Service & Maintenance

Checking the Inside of the Boiler Door

Checking the inside of the boiler door can indicate whether the fibre glass seal is properly applied. If the seal is not
properly applied, higher levels of CO gas can form. Checking the inside of the door can also indicate whether the
guide tube is indicating increased wear. This is a danger especially at higher temperatures.
Checking the inside
of the boiler door
Check guide tube
Check boiler door seal
Check fireclay boiler door

Check guide tube for deformation
(possible cause of deformation:
Overheating If there is increased wear
of the fireclay, perform check (see section
checking for increased wear of Fireclay)

Check guide tube for wear

Seal must fit properly and be caulked

Procedure if a seal is leaking
Replace ceramic packing of the seal,
check by means of impression test
that the whole surface of the seal lies
on the ceramic packing, increase seal
contact pressure in RF-400/540 with
the screws outside on the door

Check fireclay erosion

The formation of cracks and spalling
outside the glass fibre packing only
constitutes an optical imperfection

Complaints must be made in the event
of fireclay erosion inside the glass fibre
packing from ~ 3d"(80 mm)
Troubleshooting
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