Fröling FBR-G2 User manual

Installation and operating instructions
FBR-G2 / GAR-G2
with separate rotary agitator drive and discharge screw
Translation of original German version of installation and operating instructions for technicians and
operators.
Read and follow all instructions and safety instructions.
All errors and omissions excepted.
M2070323_en | Edition 06/11/2023

Table of contents
ii M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2
1 General ......................................................................................................................................................... 4
1.1 Functional description ........................................................................................................................... 5
2 Safety............................................................................................................................................................ 6
2.1 Hazard levels of warnings ..................................................................................................................... 6
2.2 Permitted uses ...................................................................................................................................... 7
2.2.1 Permitted fuels ........................................................................................................................... 8
2.3 Qualification of staff............................................................................................................................... 9
2.3.1 Qualification of assembly staff ................................................................................................... 9
2.3.2 Personal protective equipment for assembly staff ..................................................................... 9
2.3.3 Qualification of operating staff ................................................................................................... 9
2.3.4 Protective equipment for operating staff .................................................................................... 10
2.4 Design information ................................................................................................................................ 10
2.4.1 Standards................................................................................................................................... 10
2.4.2 Requirements at the installation site .......................................................................................... 11
2.5 Safety devices....................................................................................................................................... 12
2.6 Residual risks........................................................................................................................................ 13
3 Technical information ................................................................................................................................. 15
3.1 Dimensions ........................................................................................................................................... 15
3.2 Store sizes ............................................................................................................................................ 16
3.3 Technical specifications ........................................................................................................................ 17
4 Design information...................................................................................................................................... 18
4.1 Information about setup ........................................................................................................................ 19
4.2 Wall opening ......................................................................................................................................... 21
5 Transport and handling .............................................................................................................................. 22
5.1 Temporary storage................................................................................................................................ 22
6 Assembly ..................................................................................................................................................... 23
6.1 Scope of delivery................................................................................................................................... 23
6.1.1 Agitator head.............................................................................................................................. 23
6.1.2 Support kit.................................................................................................................................. 23
6.1.3 Discharge screw ........................................................................................................................ 24
6.1.4 Agitator drive.............................................................................................................................. 25
6.2 Installing the discharge screw ............................................................................................................... 26
6.2.1 Overview of trough arrangement ............................................................................................... 26
6.2.2 Overview of trough arrangement with extended length ............................................................. 28
6.2.3 Fitting the troughs ...................................................................................................................... 30
6.2.4 Mounting the fibre shredder (optional) ....................................................................................... 32
6.2.5 Fitting the upper part of gravity shaft and drive unit................................................................... 33
6.2.6 Fitting attachments..................................................................................................................... 37
6.3 Fitting the agitator ................................................................................................................................. 37
6.3.1 Fitting the support kit.................................................................................................................. 37
6.3.2 Installing the agitator drive ......................................................................................................... 40
6.3.3 Installing the raised floor (optional) ............................................................................................ 45
6.3.4 Installing the FBR-G spring blade agitator ................................................................................. 45
6.3.5 Installing the GAR-G articulated arm agitator ............................................................................ 47
6.4 Fitting adjustable feet in boiler room (optional) ..................................................................................... 52
6.5 Closing the wall penetration .................................................................................................................. 52
6.6 Temperature monitoring device in the fuel store (TMD):....................................................................... 53
6.7 Connecting the system.......................................................................................................................... 54
6.7.1 Electrical connection .................................................................................................................. 54
6.7.2 Connecting the sprinkler system................................................................................................ 54

Table of contents
M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2 iii
7 Operating the system.................................................................................................................................. 55
7.1 General information............................................................................................................................... 55
7.2 Initial startup.......................................................................................................................................... 55
7.3 Filling/refilling the store with fuel ........................................................................................................... 56
7.3.1 Loading of fuel for a partially emptied store with rotary agitator ................................................ 56
7.3.2 Loading fuel into an empty fuel store with a rotary agitator ....................................................... 57
7.3.3 Blowing in fuel for a partially emptied store with rotary agitator................................................. 57
7.3.4 Blowing in fuel for an empty store with rotary agitator ............................................................... 58
7.3.5 Drainage of fuel store................................................................................................................. 59
7.4 During operation.................................................................................................................................... 59
7.5 Decommissioning.................................................................................................................................. 60
7.5.1 Disassembly............................................................................................................................... 60
7.5.2 Disposal ..................................................................................................................................... 60
8 Servicing the system .................................................................................................................................. 61
8.1 Maintenance work by the operator........................................................................................................ 62
8.2 Maintenance work by technicians ......................................................................................................... 64
8.3 Replacement parts ................................................................................................................................ 64
9 Troubleshooting .......................................................................................................................................... 65

1 | General
4 M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2
1 General
Thank you for choosing a quality product from Froling. The product features a state-of-
the-art design and conforms to all currently applicable standards and testing guidelines.
Please read and observe the documentation provided and always keep it close to the
system for reference. Observing the requirements and safety information in the
documentation makes a significant contribution to safe, appropriate, environmentally
friendly and economical operation of the system.
The constant further development of our products means that there may be minor
differences from the pictures and content. If you discover any errors, please let us know:
[email protected].
Subject to technical change.
Issuing a delivery
certificate This is an incomplete machine as defined by the Machinery Directive. The incomplete
machine must only be started up when it has been confirmed that the machine, in which
the incomplete machine has been installed, conforms to the provisions of Directive
2006/42/EC.
Compliance with the open provisions and verification of the correct installation must be
confirmed in the delivery certificate of the declaration of installation (included in
documentation).

General | 1
M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2 5
1.1 Functional description
GAR articulated arm agitator
FBR spring blade agitator
A Rotary agitator geared motor F Rotary agitator mitre gear
B Rotary agitator duct with drive shaft G Discharge screw geared motor
C Agitator head H Upper part of gravity shaft
D Articulated arms with spring piles
(GAR)
I Discharge screw closed trough
E Spring piles (FBR) J Discharge screw open trough
When the store is full, the agitator arms are positioned at the agitator plate, reducing
resistance during system operation due to the smaller diameter.
When fuel is requested by the boiler controller, the system starts and the material is
loosened by the pre-tensioned agitator arms, and fed to the open trough of the discharge
screw. The discharge screw feeds the material to the transfer position, where it falls
through the burn back protection system (burn back flap/rotary valve) into the stoker
screw of the boiler which is positioned below or into another feed screw.
Irrespective of the discharge screw, the feed output can be varied by means of the
separate drive of the agitator.

2 | Safety
6 M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2
2 Safety
2.1 Hazard levels of warnings
This documentation uses warnings with the following hazard levels to indicate direct
hazards and important safety instructions:
DANGER
The dangerous situation is imminent and if measures are not observed it will lead
to serious injury or death. You must follow the instructions!
WARNING
The dangerous situation may occur and if measures are not observed it will lead to
serious injury or death. Work with extreme care.
CAUTION
The dangerous situation may occur and if measures are not observed it will lead to
minor injuries.
NOTICE
The dangerous situation may occur and if measures are not observed it will lead to
damage to property or pollution.

Safety | 2
M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2 7
2.2 Permitted uses
Fröling’s “Separate rotary agitator drive FBR-G / GAR-G” discharge system is only
designed to discharge fuels from suitable storerooms. Only use fuels specified in the
“Permitted fuels” section!
The unit should only be operated when it is in full working order. It must be operated in
accordance with the instructions, observing safety precautions, and you should ensure
you are aware of the potential hazards. The inspection and cleaning intervals in the
operating instructions must be observed. Ensure that any faults which might impair safety
are rectified immediately.
The manufacturer or supplier is not liable for any damage resulting from non-permitted
uses.
Only original spare parts or specific alternative spare parts authorised by the
manufacturer may be used. Any kind of change or modification made to the product will
invalidate the manufacturer’s conformity with the applicable guideline(s). In such cases,
the product will need to undergo new hazard evaluation procedures by the operator. The
operator will then be fully responsible for the declaration of conformity according to the
valid guideline(s) for the product and will need to issue a corresponding declaration for
the device. This person will then assume all of the rights and responsibilities of a
manufacturer.
DANGER
If the device is used incorrectly:
Incorrect use of the system can cause severe injury and damage.
When operating the system:
rObserve the instructions and information in the manuals
rObserve the details on procedures for operation, maintenance and cleaning, as well
as troubleshooting in the respective manuals.
rAny work above and beyond this (e.g. servicing) must be carried out by a heating
engineer approved by Fröling Heizkessel- und Behälterbau GesmbH or by Froling
customer services

2 | Safety
8 M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2
2.2.1 Permitted fuels
Wood chips
Designation to
EN ISO 17225-4
Description
M20 Water content max. 20%
M30 Water content max. 30%
M35 Water content max. 35%
P16s Main proportion (at least 60% by mass): 3.15 – 16 mm, max. length
of 45 mm, previously referred to as fine wood chips G30
P31s Main proportion (at least 60% by mass): 3.15 – 31.5 mm, max.
length of 120 mm, previously referred to as medium-sized wood
chips G50
Note on standards EU: Fuel to EN ISO 17225 – Part 4: Wood chips class A1+A2 / P16s-P31s M35
Additional for
Germany:
Fuel class 4 (§3 of the 1st Federal Emissions Protection Ordinance (BlmSchV)
in the latest amended version)
Wood pellets
Wood pellets made from natural wood with a diameter of 6mm
Note on standards EU: Fuel acc. to EN ISO 17225 - Part 2: Wood pellets class A1 / D06
and/or: ENplus / DINplus certification scheme
General note:
Before refilling the store, check for pellet dust and clean if necessary.

Safety | 2
M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2 9
2.3 Qualification of staff
2.3.1 Qualification of assembly staff
CAUTION
Assembly and installation by unqualified persons:
Risk of personal injury and damage to property
During assembly and installation:
rObserve the instructions and information in the manuals
rOnly allow appropriately qualified personnel to work on the system
Assembly, installation, initial startup and servicing must only be carried out by qualified
personnel:
▪ Heating technicians/building technicians
▪ Electrical installation technicians
▪ Froling customer services
The assembly staff must have read and understood the instructions in the documentation.
2.3.2 Personal protective equipment for assembly staff
You must ensure that staff have the protective equipment specified by accident
prevention regulations!
▪ During transport, erection and installation:
- wear suitable work wear
- wear protective gloves
- wear safety shoes (min. protection class S1P)
2.3.3 Qualification of operating staff
CAUTION
If unauthorised persons enter the Installation room:
Risk of personal injury and damage to property
rThe operator is responsible for keeping unauthorised persons, in particular children,
away from the system.
Only trained operators are permitted to operate the unit. The operator must also have
read and understood the instructions in the documentation.

2 | Safety
10 M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2
2.3.4 Protective equipment for operating staff
You must ensure that staff have the protective equipment specified by accident
prevention regulations!
▪ For operation, inspection and cleaning:
- suitable work wear
- protective gloves
- sturdy shoes
2.4 Design information
Carrying out modifications to the system and changing or disabling safety equipment is
prohibited.
Always comply with all fire, building and electrical regulations when installing and
operating the system, in addition to following the assembly and operating instructions and
mandatory regulations that apply in the country of use.
2.4.1 Standards
The system must be installed and commissioned in accordance with the local fire and
building regulations. The following standards and regulations should always be observed:
ÖNORM / DIN EN 60204 Safety of machines; Electrical equipment of machines, Part 1:
General requirements
TRVB H 118 Technical directives for fire protection/prevention (Austria)
ÖNORM H 5170 Construction and fire protection requirements (Austria)
ÖNORM H 5190 Heating systems - Acoustic insulation
EN ISO 13857 Safety of machines; Safety distances for maintaining a safe distance
from hazardous areas
EN 13501 Fire classification of construction products and building elements

Safety | 2
M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2 11
2.4.2 Requirements at the installation site
▪ Protect the store against all weather conditions.
▪ Protective structures must be designed in accordance with the applicable standards
and regulations
Information about the fuel store
NOTICE!The fuel store plate provided must be affixed in a conspicuous place in
the access area of the store
When FILLING the fuel store, refer to the system DOCUMENTATION!
The filling procedures may vary depending on the discharge system, type of fuel and fill
level of the fuel store. Only use fuels permitted according to the boiler’s operating
instructions.
SWITCH OFF the HEATING AND FEED SYSTEM before ENTERING the fuel store.
Risk of injury due to moving parts and automatic startup. Shut off the feeder unit before
entering the fuel store and secure it so that it cannot be switched on again. There is a
further risk of injury from the uncontrolled rotation of spring-loaded components. These
must be secured during work.
There is a risk of carbon monoxide poisoning in the pellet stores. Adequately ventilate the
store before entering (at least 15 mins.). Only enter the store under the supervision of a
second person. While in the store, keep the door open and use a dust mask! There is a
risk of collapse and being buried alive as a result of cavity formation in the store.
Therefore, do not enter the fuel area!
Slick surfaces in the fuel store present a slipping hazard and fuel supply points present a
risk of falling.
As a rule, personal protective equipment (work clothing, protective gloves, sturdy shoes)
should be worn when working in the store and on the conveyor.
Unauthorized access prohibited! Keep children away! Design the fuel store in such a way
that it is safe to access and keep it locked. Keep the key in a safe place. No fire, open
flames or smoking! Protect the fuel against moisture.

2 | Safety
12 M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2
2.5 Safety devices
Safety equipment Safety function
Limit switch for top of gravity
shaft:
Protection against access to the danger area of the feed/
discharge screw when the system is switched on
rIf the inspection cover is opened, the system is switched off
via the limit switch
ÄThe power supply remains switched on
Burn back flap: The burn back protection system (BPS) is part of the boiler and
is located directly below the top part of the gravity shaft. During
the heating up phase, after loading has taken place and in the
event of a fault, it reliably disconnects the discharge and infeed
devices, preventing fire from spreading to the fuel store.
rDepending on the design of the system, a burn back flap or a
rotary valve is fitted.
Rotary valve:
Water sprinkler system: Self-activating extinguisher system to limit burn back around the
top of the gravity shaft.
If the temperature in the top of the gravity shaft rises above
95°C, the valve of the sprinkler system opens, water flows out
and prevents the fire from spreading to the fuel store.
TMF: Temperature monitoring device in the fuel store (as per TRVB
H118, Austria only) which activates the customer’s alarm(s)
when the temperature in the fuel store exceeds 70°C.

Safety | 2
M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2 13
2.6 Residual risks
DANGER
When working on rotary agitator arms:
Serious injuries possible from pre-tensioned rotary agitator arms!
When working on the rotary agitator arms, you must therefore:
rLoosen the tension in the rotary agitator arms, or secure them so they cannot spring
back in an uncontrolled way before dismantling them
DANGER
When working on the unit with a live power supply:
Serious injury possible due to automatic startup!
When working on the system or in the store, it is essential that the five safety directives
are followed:
rDisconnect all poles on all sides
rSecure so that it cannot be switched on again
rCheck that there is no power
rEarth and short circuit
rCover any adjacent live parts and limit area of risk
NOTICE
Filling the store when the discharge system is switched off
Equipment damage hazard.
Due to the high resistance from the weight of the fuel on the rotary agitator arms, the
system cannot be started. The drive would be overloaded
rTake the following precautions:
ÄThe discharge system must be switched on during filling, see the section “Filling/
refilling the store with fuel”

2 | Safety
14 M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2
NOTICE
If the rotary agitator arms touch the fuel store wall:
damage to equipment may occur
If the structural layout means that the rotary agitator arms come into contact with the fuel
store wall:
rrotary agitator arms can dislodge pieces of plaster
rPieces of wall or plaster that have broken off can block the discharge system or
disrupt the material feed into the boiler, causing a system failure.
ÄIf this happens:
rFit an approx. 300 mm high covering made of sheet metal or hardwood to the fuel
store wall.
ÄFroling offers a ready-made wall protection pack for this purpose.
The staff at Froling will be happy to advise you.
NOTICE
If non-permitted fuel types are used:
Non-standard fuels can cause stiffness and block the system, resulting in the
failure/breakage of components.
Therefore:
rOnly use fuels specified in the “Permitted uses” section of this manual.
NOTICE
Operating the discharge system at too steep a gradient angle
The mitre gear can break due to insufficient lubrication!
When installing the discharge system, you should therefore ensure:
rFBR with wood chips gradient angle α maximum 15°
rFBR with pellets gradient angle α maximum 5°
rGAR with wood chips gradient angle α maximum 10°
rGAR with pellets gradient angle α maximum 3°
ÄThe rotary agitator should always be fitted as flat as the place of installation allows

Technical information | 3
M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2 15
3 Technical information
3.1 Dimensions
D3
D1
D
L3 L4 L5 L6
L7
B2
D2
B1
H1
L2L1
Ref. Description FBR 110 GAR 110 FBR 150 GAR 150 FBR 200 GAR 200
DDiameter of spring blade (FBR) /
articulated arm (GAR)
Ü "Store sizes" [}16]
D1 Diameter of rotary agitator plate 900 mm 1300 mm 900 mm 1300 mm 900 mm 1300 mm
D2 Diameter, screw 110 mm 150 mm 190 mm
D3 Diameter of drive shaft 40 mm
W1 Width of trough screw 140mm 200 mm 250 mm
W2 Width of rotary agitator duct 80 mm
H1 Height of rotary agitator duct 80 mm
L1 Length of rotary agitator duct Ü "Store sizes" [}16]
L2 Length of geared motor 194 mm
L3 Length of open trough Ü "Store sizes" [}16]
L4 Length of transfer channel 600 mm
L5 Length of closed trough Varies – available in lengths from 100 mm
L6 Length of gravity shaft top + geared
motor
590 mm 600 mm 750 mm
L7 Length of screw Determined during planning of the store
αGradient angle for wood chips 0 – 15 ° 0 – 10 ° 0 – 15 ° 0 – 10 ° 0 – 15 ° 0 – 10 °
Gradient angle for pellets 0 – 5 ° 0 – 3 ° 0 – 5 ° 0 – 3 ° 0 – 5 ° 0 – 3 °

3 | Technical information
16 M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2
3.2 Store sizes
The spring blade / articulated arm diameter and the length of the open trough / agitator
channel vary depending on the size of the store. The tables below show the respective
dimensions.
IMPORTANT! The nominal diameter of the discharge system must be selected
according to the side length (A) of the space that runs parallel to the agitator channel.
A
D
L3
L1
FBR spring blade agitator 2.02) 2.52) 3.0 3.5 4.0 4.5 5.0
Length of the store in the direction of
the agitator (A)
m ≤ 2.0 ≤ 2.5 ≤ 3.0 ≤3.5 ≤ 4.0 ≤ 4.5 ≤ 5.0
Nominal diameter mm 2000 2500 3000 3500 4000 4500 5000
Spring blade diameter (D)1) 2400 2950 3450 4000 4500 5050 5600
Length of rotary agitator duct (L1) 1650 1900 2150 2400 2650 2900 3150
Length of open trough (L3)
- Screw Ø 110
- Screw Ø 150
1045 2)
-
1295 2)
-
1545
1595
1795
1845
2045
2095
2295
2345
2545
2595
Length of open trough (L3)
- Screw Ø 110
- Screw Ø 150
(for extra long screws)
1545
-
2045
-
2545
2595
3045
3095
3545
3595
4045
4095
4545
4595
Maximum height of dumped
material3)
- Pellets
- Wood chips
m
2.5
5.0
1. The spring blades have a certain oversize to ensure optimum use of the fuel store
2. Available only for screw Ø 110
3. The greater the height of the pile of dumped material, the greater the likelihood of creation of voids

Technical information | 3
M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2 17
GAR articulated arm agitator 5.0 5.5 6.0
Length of the store in the direction of
the agitator
m ≤ 5.0 ≤ 5.5 ≤ 6.0
Articulated arm diameter (D) mm 5000 5500 6000
Length of rotary agitator duct (L1) 3165 3415 3665
Length of open trough (L3)
- Screw Ø 110
- Screw Ø 150
2545
2595
2795
2845
3045
3095
Length of open trough (L3)
- Screw Ø 110
- Screw Ø 150
(for extra long screws)
4545
4595
5045
5095
5545
5595
Maximum height of dumped
material1)
- Pellets
- Wood chips
m
3.0
6.0
1. The greater the height of the pile of dumped material, the greater the likelihood of creation of voids
3.3 Technical specifications
Agitator geared motor
Name FBR GAR
Output 0.37 kW 0.55 kW
Speed 10.5 rpm 10.5 rpm.
Discharge screw geared motor
Boiler
Output
Screw
Diameter
Standard length1) Extra long1)
20-75 kW Ø 110 4-5 rpm 0.25 kW 4-5 rpm 0.37 kW
80-120 kW 10-11 rpm 0.37 kW 10-11 rpm 0.55 kW
130-180 kW Ø 150 4-5 rpm 0.25 kW 4-5 rpm 0.37 kW
200-350 kW 10-11 rpm 0.55 kW 10-11 rpm 0.75 kW
400-550 kW Ø 200 10-11 rpm 0.55 kW 10-11 rpm 0.75 kW
1. The data are applicable for wood chip fuel. If the fuel used is pellets the data may vary depending on the system.
Geared motor power supply 400 VAC / 50 Hz
Safety switch 24 VDC

4 | Design information
18 M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2
4 Design information
1
2
34
5
6
7
Store room details Design information
1Walls and ceilings The walls and ceilings of the store and the boiler room must be fire-proof (REI 90) in
compliance with local regulations
2Hole in
wall
Do not fix or cement the transfer trough and agitator channel to the brickwork as this can
create a bridge transferring mechanical noise and vibration into the entire brickwork! For this
reason, fill any gaps around holes made in walls with insulating material to EN 1366-3 and EN
13501-2.
For the dimensions of the opening see the heading “Wall penetration”
3Boarding the store
door
The store door must be a fire door with an EI230-C fire resistance rating; it must have a seal.
Wooden boards should also be fitted on the interior of the store so that the fuel does not press
against the door.
4Inspection
opening
Maintenance opening with class EI290-C fire resistance rating (e.g. chimney door) immediately
over the hole in the wall for easy clearance of any blockages from oversized material around
the shear edge of the discharge screw. The inspection opening must be designed in such a
way that it can only be opened with a tool. The operator must highlight residual risks at the
inspection opening.
5Side wall protection If the structure of the store means that the arms come into contact with the wall (rectangular
room), we recommend that you fit an approx. 300 mm high covering made of sheet metal or
hardwood to the wall of the store. This prevents pieces of the wall and plaster from breaking
off and blocking the discharge system.
6Raised
floor
This prevents material from remaining below the rotary agitator arms. This material would
decay, and this could affect the heating value. For this reason, we recommend that the
customer installs a raised floor. The construction should be dimensioned so that the raised
floor is not deformed under the static load of the fuel. The raised floor must also be self-
supporting, and it should not be supported by the screw channel.
7Temperature
monitoring in the fuel
store (TMF)
Position the temperature sensor in the fuel store at the transition from open to closed trough. If
the temperature exceeds the set limit (approx. 70 °C or a maximum of 20 °C above the highest
anticipated ambient temperature), warning device(s) provided by the customer will be
triggered.

Design information | 4
M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2 19
4.1 Information about setup
90°
1/2 1/2
1/2 1/2
1
3
2
Observe the following points when positioning the equipment:
▪ Position the agitator head (1) centrally within the room
▪ Position the agitator channel (2) at right angles to the wall
▪ The discharge screw and agitator head should be at the same angle (3)
Correct position of the discharge screw
NOTICE
Malfunctioning of discharge system because discharge screw is in incorrect position
Positioning the open trough of the discharge screw next to the rotary agitator
plate may cause bridge formation and malfunctioning in the discharge when the
bunker is full.
Take the following precautions:
rInstall the discharge screw together with supplied trough holder (A) on the support
kit (B)
Ü "Installing the agitator drive" [}40]
A
B

4 | Design information
20 M2070323_en | Installation and operating instructions FBR-G2 / GAR-G2
Fitting options for discharge screw
The separate agitator drive means that the discharge screw can be set up in different
ways. Below are some examples using a separate rotary agitator drive with GAR.
These illustrations apply in the same way to an FBR.
Standard discharge screw, right Standard discharge screw, left
Discharge screw standard right and extra long
left
Discharge screw standard left and extra long
right