Hydraulic Drive, As Twin; Push Floor Screw Conveyor, D = 190 Mm - Viessmann VITOFLEX 300-UF Technical Manual

Fuel discharge
(cont.)
Note
Gear pump function: with a two-stage gear pump, the pump runs in
standard mode at stage 2. This means that the pushrods move
quickly. The pump only switches to stage 1 when the resistance
increases.

Hydraulic drive, AS twin

For part no., see pricelist
Hydraulic unit for the actuation of the twin pushrod drives with dis-
charge and fill function. When the required fill level of the push floor
screw conveyor is reached, the discharge function switches off.
If there is free space above the discharge push floor to accommo-
date top-up fuel, the top rear pushrod carries out the fill function.
When the heating system requires fuel, the control unit interrupts the
fill function and the discharge function is switched to the bottom front
pushrod.
■ Hydraulic unit, comprising:
– Gear pump 3 x 400 V
– Oil container
– 4/2-way solenoid valve
– Non-return valve
– Pressure limiter valve
– Pressure diverter valve
– Return filter
– Oil level indicator
– Pressure gauge
– Shut-off valve
– Oil filling
– Hydraulic hoses
– Wall mounting supports
■ 2 infrared light barriers for fuel store level monitoring
Use of the hydraulic units (drives plus rods)
Hydraulic drive, AS twin
Rated heating output of the boiler(s)
Gear pump rating
Supply volume
Stage 1
Draught
Stage 1
Supply volume
Stage 2
Draught
Stage 2
Oil content
*18
Max. number of pushrods
Note
Additional equipment is possible for driving hydraulically actuated
fuel store covers.

Push floor screw conveyor, D = 190 mm

For part no., see pricelist
In order to remove the fuel discharged by the pushrods, the push
floor screw conveyor extends over the entire push floor width as an
open trough screw conveyor. For further transportation, the push
floor screw conveyor is designed, depending on the transfer situa-
tion, as a sealed trough or a pipe.
*18 Values in brackets: option only in coordination with project management at the factory
VITOFLEX 300-UF
■ Discharge function activation:
by boiler control unit, protected by temperature and level switches
in the oil container
■ Activation of fill function:
by activation of the light barrier in the fuel store
kW
kW
l/min
bar (MPa)
l/min
bar (MPa)
l
pce
Note
Gear pump function: with a two-stage gear pump, the pump runs in
standard mode at stage 2. This means that the pushrods move
quickly. The pump only switches to stage 1 when the resistance
increases.
Standard delivery:
■ Push floor screw conveyor as per project drawing
Note
Article price per m
V18 V40
100 - 1250 1250 - 2500
4
9
200 (20) 200 (20)
18
100 (10) 100 (10)
55
3 (4) 3 (4)
Viesmann
5
7.5
20
40
80
63