Visual Inspection Of Combustion; Unjamming The Ash Removal Screw Conveyor - Viessmann Vitoflex 300-RF Service And Maintenance Instructions

Vitoflex 300-RF Service & Maintenance

Visual Inspection of Combustion

Unjamming the Ash Removal Screw Conveyor

CAUTION
Risk of crushing by and entanglement in the ash
removal screw conveyor
Never reach in through the maintenance cover.
Note: Wear personal protective equipment.
Always wear a face mask when handling ash or slag.
Requirements:
The system is switched off.
The firebed is completely burned down. Check the
firebed through the sight glass.
During operation, the controller controls, regulates and
monitors all components and system parts automatically.
CAUTION
Risk of burns due to hot machine components.
Only touch handles and identified parts.
Never touch sight glasses or their retainers.
These components are connected directly to the
combustion chamber.
Check flames in the combustion chamber through the
sight glass.
The ideal flame is yellow to light yellow. This indicates
normal combustion in which the fuel burns cleanly.
1. At the programming unit, switch the system to manual
mode in the sub-area "Fuel", under "Ash removal,
combustion chamber".
2.
WARNING
There is a risk of deflagration when the combustion
chamber door is opened. Poking around in the firebed
leads to oxygenation, which can produce a flash.
Both can result in severe burns.
Never open the combustion chamber door during
operation.
Before opening the combustion chamber door, ensure
that you are standing in a safe place.
Never poke around in the firebed.
3. At the programming unit, alternately tap on
"clockwise" and "anti-clockwise".
The ash removal screw conveyor runs forwards and
backwards alternately. This action will unjam the ash
removal screw conveyor.
4. Stop the movement of the ash removal screw conveyor.
The ash removal screw conveyor comes to a halt.
5. Open the inspection cover.
6.
CAUTION
Hot ash and slag may result in burns.
Wear protective gloves when handling ash and slag.
Remove large bits of slag with a poker or similar.
7. Close the inspection cover.
8. On the programming unit, switch automatic mode
back on.
The ash removal screw conveyor is now unjammed.
Troubleshooting
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