KOB 8240-1 Spec Sheet

Funnel Extraction System up to D 6.0 m ECO [Art.-Nr. AP-11 / 7387794]
Funnel Extraction System up to D 6.0 m PYR [Art. No. AP-21 / 7387899]
Funnel Extraction System up to D 7.5 m ECO [Art. No. AP-12 / 7387958]
Funnel Extraction System up to D 7.5 m PYR [Art. No. AP-22 / 7387929]
Function:
The repeatedly proven material extraction for round silos takes place with an agitator built into the extraction housing, in
the centre of the agitator an extraction auger is driven by a massive cardan joint. When the silo is full, the auger tends
toward an upright position. The funnel limits the inclined position of the auger when the silo is empty. The drive is carried
out by a helical worm gear motor to the sweeping mechanism.
With material compacting in the extraction housing, the conveyance direction of the auger is automatically changed for a
period of time set at the factory, as a result of increased power consumption of the drive. This loosens up the
compacting, and a malfunction is prevented.
Scope of delivery:
- Funnel Extraction System according to the order data with drive unit 3 x 400 V,
- Automatic control of the drive for the worm spur gear motor for both rotational directions
Safety limit switch mounted on the maintenance lid of the extraction system casing.
-
Table 1: Designs and drives
Boiler
[Art. No.]
control
system
11
ECO
7387794
AP-
21
PYR
7387899
12
ECO
7387958
AP-
22
PYR
7387929
1) Rotational speed/output: Project-specific and dependent on boiler capacity and fuel, dimensioning by Viessmann construction
2) When the silo height H = approx. 1.8 x D is exceeded, the guarantee of extraction performance is cancelled because of the danger of hang-up. (fuel-
dependent)!
Additional Outlet Flange [Art. No. AP-Z01 / 7388520]
A second connecting point for feed systems on the extraction system casing for double-boiler plants.
Enlarged funnel [Art.-No. AP-Z02 / 7388042]
Extra charge for funnel diameter of 3000 mm.
Observe: funnel diameter of 3000 mm required from AP-12 to AP-22.
Köb Holzheizsysteme GmbH, Flotzbachstr. 33, A-6922 Wolfurt, Tel. +43/5574/6770-0, Fax 65707, E-Mail: office@kob.cc
Spec Sheet
Fuel Conveyance System
Funnel Extraction System
Motor control
Up to boiler [kW]
in the switch cabinet
with:
Pellets
S 650
Electronic softstart
3000
Protection switch/
Contactor
Electronic softstart
2500
Protection switch/
Contactor
Subject to technical changes
2)
Torque
at auger
Forest
Shaving
wood
s
chips S
S 130
200
1250 1250 Approx. 1500
2500 2500 Approx. 3000
8240-1
2009-03-01_GB
1)
Diameter
Extraction circle
on a project-by-
project basis
[Nm]
Max[m]
6.0
7.5