Geovent 25 User manual

SLÆDEKANAL
type 25
CHANNEL DUCT
Type 25
Version 2.0 23.04.10
INSTRUCTION MANUAL
www.geovent.com

2

3
1.0 General safety precautions
IMPORTANT – Please study all the instructions before
mounting and commissioning.
Please keep these instructions in a safe place and
instruct all users in the function and operation of the
product.
All electrical installations must be carried out by an
authorised electrician.
Factory mounted parts must not be dismounted.
In order to secure correct suspension, in several places
two persons are required during the installation.
1.1 Danger
Letting go of the hose/nozzle when demounting it from
the exhaust pipe involves a risk of mutilation. Avoid
being hit by the nozzle – and be careful not to hit so-
meone else with it.
Hoses mounted on a trolley with spring balance F/LR:
Do not let go of the hose, when it is completely pulled
out, but keep a tight hold of the hose until it has been
totally coiled up again. If the hose slips, it will coil up
quickly, endangering people and machinery.
1.2 Field of application
The GEOVENT Channel Duct System is a rail system,
developed for the extraction of exhaust fumes and wel-
ding smoke. When one or several trolleys have been
correctly installed in the Channel Duct, the trolley may
be moved linearly to the area, where it is requested.
The hose is pulled down and the nozzle is fixed to the
exhaust pipe.
It is also possible to mount the hose trolley with a hose
reel (type LX or FB).
Alternatively, the Trolley may be mounted with a point
extraction arm instead (type WING or COMPACT). The
arm can rotate 360° and is suitable for the removal of
welding smoke, etc.
The Channel Duct can only be installed in such a way
that the rubber lips point either directly up or down.
The Channel Duct may not be used in areas classified
as ATEX zones, for example extraction of aluminum,
flour, textiles and wood dust and other media (eg. vapor
/ gas) which is associated with danger of explosion.
1.3 Technical data
Temperature exhaust air Max 150°C
Temperature surroundings 0 - 50°C
In special situations, where the temperature of the
exhaust air is higher than 150°C, the standard hose
may melt. In order to avoid such thing, various precauti-
ons may be taken: Please refer to the section regarding
troubleshooting, item 4.1.
Noise data
The actual Channel Duct System does not emit any
noise. The noise level depends on several factors,
primarily the relation between the diameter of the hose
and the extracted volume of air. If the hose has been
under dimensioned in relation to the required volumes
of air, wind roar may occur.
Optimum volume of air
Several factors are of importance when selecting the
optimum Channel Duct solution. Depending on the ap-
plication, the table below may be used as a guideline
for the volume of air, which is requested for the various
requirements.
Type of vehicle Recomm.
airvolume Recomm. hose dia.
Small cars 300 m³/h ø80/ø100
Smaller private cars 400 m³/h ø100
Private cars > 3000 ccm 600 m³/h ø125
Vans/smaller trucks 800 m³/h ø125
Trucks 1000 m³/h ø150
Contractors machinery 1000 m³/h ø150
Test stand 1-2.000m³/h ø150/ø200
Contents
1.0 General safety precautions . . . . . . . . . . . . . . . . . .3
1.1 Danger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.2 Field of application . . . . . . . . . . . . . . . . . . . . . . . .3
1.3 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1.4 Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.1 Optional equipment . . . . . . . . . . . . . . . . . . . . . . . .8
2.2 Trial run – exact adjustment . . . . . . . . . . . . . . . . . 9
2.3 Adjustment of the Trolley . . . . . . . . . . . . . . . . . . . .9
3.0 User instruction - application . . . . . . . . . . . . . . . . 10
4.0 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . .10
5.0 Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.0 Declaration of Conformity according to Bilag IIA 12

4
The previous mentioned data cover idle running and
are only intended as a guideline. Different projects may
involve situations, where deviations from the table oc-
cur.
Pressure drop for Channel Duct System
At the adjustment, the Hose Trolley is placed on the
rail system in such a way, that the trolley is as far away
from the fan as possible.
A number of factors may influence the drop of pressure
in the system. For example, it depends on how many
trolleys that are connected to the Channel Duct Sy-
stem, where they are placed as well as how many duct
connections – and how the duct connections for the
fan are placed. In addition to this, the length and the
dimension of the hose as well as the way in which it is
suspended are decisive for the drop of pressure.
Weight:
The Channel Duct weighs 9 kg/m without rubber lips,
mounting parts, trolley etc.
Capacity:
The profile of the Channel Duct corresponds to a ø180
mm spiro pipe. Recommended max. volume of air per
trolley = 2.000 m³/h
For airvolumes > 1.200m³/h a special trolley is neces-
sary
5
250 Volumenstrøm [m³/h]
Tryktab [Pa/m]
Tryktabstabel for slædekanal type 25
45
10
15
20
25
30
35
40
50
55
500 750 1000 1250 1500 1750 2000 2250 2500 2750
75
150 Volumenstrøm [m³/h]
Tryktab [Pa]
Tryktab for slangevogn uden slange
675
150
225
300
375
450
525
600
750
825
300 450 600 750 900 1050 1200 1350 1500 1650
200 400 600 800 1.000 1.200 1.400 1.600
1.000
2.000
3.000
4.000
5.000
6.000
1.800
Volumenstrøm [m3/h]
Tryktab [Pa]
5 m
Ø150 mm
10 m
Ø150 mm
5 m
Ø125 mm
10 m
Ø125 mm
5 m
Ø100 mm
10 m
Ø100 mm
5 m
Ø80 mm
10 m
Ø80 mm 7,5 m 7,5 m
7,5 m
Ø125 mm
7,5 m
Tryktab – Slanger for udstødningsgasser
M
256 cm²
=
ø180mm rør
750
126 Længden på M [mm]
Tryktab [Pa]
1000
1250
128 130 132 134 136 138 140 142
1500
1750
2000
2250
2500
Slædekanal sammentrykning
2750
3000
3250
Forstærkning skal
anvendes

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Guide strap
– for increased under pressure in the Channel Duct.
In some situations with high under pressure it will be
necessary to use a guide strap in order to stabilise the
Channel Duct. The strap should always be used, when
a welding arm is mounted on the trolley or if the drop of
pressure exceeds 1,700 Pa.
The rail: The actual Channel Duct (the rail) is made of
extruded aluminium profile. Neoprene rubber lips are
fixed to the rail and are completely tight-fitting at a 5-
600 Pa vacuum. They are self-sealing. The neoprene
rubber lips cannot be used for oil/oil vapours. Please
order the Channel Duct with nitrile rubber lips instead in
such cases.
Neoprene rubber lips
Profile in extruded aluminium
TPE degas hose
with nylon spiral
Rubber nozzle
LWS suspension
Trolley made
of steel with
6 adjustable
nylon wheels
Balancer with automatic
start/stop of fan (optional
equipment)
Table of dimensions of the Hose Trolley
Trolley: Powder enamelled steel, complete with 6
smooth-running nylon wheels.
Balancer: Safeguards that the hose does not take up
floor space and that it is easy to operate. Extension
length and capacity vary from system to system (optio-
nal extras).
Hose: TPE degas-hose with nylon spiral. The hose may
conditionally be run over. Temperature resistant up to
150 C°, however briefly up to 170° C. Alternatively, a
silicone high-temperature hose, type GeoFlex HT is
available, offering a temperature resistance of up to
300°C
Nozzle: To be fixed to the exhaust pipe of the vehicle.
Available in many different executions, such as rubber
and steel, with or without tools, etc.
07-406
End connection
for the spiro, may
be ø160, ø200 or
ø250 mm.
07-411 Trolley shown with inte-
grated uncoupling system. The
trolley can be pulled forwards
and backwards throughout the
length of the Channel Duct
Spring balancer (up to 8m exten-
sion and 15 kg lifting capacity
Wire switch LWS for automatic
start/stop of fan and/or motor
damper
Suspension system for ceiling
mounting (07-656 + 07-424 +
07-422). One suspension point
for every 3-4 m of Channel Duct
07-105 Mechanic uncou-
pling bracket. Opens the
tool on the nozzle, when
the trolley reaches the end
of the Channel Duct.
07-400
Aluminium
Channel
Duct with
tight rub-
ber lips.
Avaible in
sections of
3 og 6m.
GeoFlex Exhaust hose (qua-
lities from 150 to 1000°C.
The guide strap is mounted at intervals of 2 meters.
1.4 Construction
Standard layout for exhaust:

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2.0 Installation
The Channel Duct System is supplied in disassembled
state. The Channel Duct is supplied in lengths of either
three or six meters.
The Channel Duct should be fixed for every two to four
meters.
The following installation should only be carried out by
a skilled fitter.
Before mounting, please consider the following:
• Space requirements for the satisfactory
installation and service of the Channel Duct
System.
• Optimum connection possibilities for piping
and automatics
The Channel Duct may be mounted both in an even
and in a sloping ceiling, on a concrete girder/rafter and
on the wall. Furthermore, the Channel Duct may also
be mounted on a column or on a carrying arm (special
equipment).
The drawing below shows the recommended installa-
tion height.
Depending on the individual application, one or
several of these components may not be included in
the individual project.
Tools to be used
Drilling/screwing machine, mounting kit (accessory bag
with screws, etc.) compass saw, felt tip, spanner or
socket wrench set, silicone or aluminium filler.
For Channel Ducts of more than 50 meters also a 3M
quick glue for the joining of the rubber lips is requested
(optional equipment).
We also recommend using two lifts for lifting the Chan-
nel Duct up to the required mounting height.
Recommended installation height
3.000 mm to 5.000 mm
A: Ceiling bracket, capable of tilting, depending on the
angle and the inclination of the roof. Two brackets are
required for every attachment point.
B: Wall bracket for the mounting of the Channel Duct on
a wall.
C: Channel Duct, type 25 in extruded aluminium with
heat resistant neoprene rubber lips.
D: Transition piece (pressure connecting piece) for
round channel for top mounting.
E: End cover, type 25 in galvanised steel (remember to
use sealing agent).
F: Stop. To be mounted on the rail system at the end of
the Channel Duct length approx. 5 cm from the end.
G: Suspension brackets, type 60 in galvanised steel.
To be used both for mounting in the ceiling and on
the wall. For suspension on the side of a concrete
girder, please use suspension bracket, type160 (G1)
instead.
H: End cover, type 25 in galvanised steel.
I: End transition piece, nipple ø250 mm, the end of the
Channel Duct to round channel. Remember to use
sealing agent.
K: Coupling bracket for distance pipes (set of two)
galvanised. Two sets are necessary per attachment
point.
L: Distance pipe 3/8”, galvanised. To be joined by
means of coupling brackets in both ends. Two items
are necessary per attachment point.
G1

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Procedure:
1. Start by fixing the bracket in the ceiling, on the wall
or on a concrete girder with a suitable distance on
the required surface. (Please refer to symbol A, B
or G1 (see previous figure), for example.) Remem-
ber that the mounted Channel Duct is utilized in
the very best way, if it is mounted in a height of 3-5
meters.
2. When using a tilting bracket and distance pi-
pes, please make sure that the Channel Duct is
mounted true to spirit level, since the trolley is ope-
rated optimally, when the installation is completely
on level.
3. Then the Channel Duct pieces are to be assem-
bled to the required length. Do so by laying the
Channel Duct lengths end to end; then assemble
the pieces individually. Half of the smaller union
is mounted in one of the Channel Duct lengths,
where it is fixed as shown on the picture.
the end of the Channel Duct should only be used
on Channel Duct lengths of up to 18 meters. Go to
item 8, if the connection is to be made at the end of
the Channel Duct.
7. Now the pressure connecting piece is placed in the
required place, and subsequently the hole to be
sawn is drawn up by means of a felt tip from the
inner side of the pressure connecting piece. The
pressure connecting piece is removed and a hole
is drilled on the line drawn up. Make sure that the
line is long enough so that a compass saw can be
used. The same procedure is followed in all places,
where top duct connections are to be made. The
hole should not be any closer than 1 meter from
the end of the Channel Duct. Remember to place
the duct connections at regular intervals on the
Channel Duct in order to even out the drop of pres-
sure over the whole length of the Channel Duct.
4. Remember to turn the junction plate (above) the
correct way. I.e. with the bend turning up.
5. Then the other Channel Duct length is assembled
by means of the union, which is fastened. Follow
this procedure until the required total Channel Duct
length is assembled.
6. If the connection of the Channel Duct to the fan/
piping system is to be top mounted (like symbol
D (figure 1)), then the holes for the duct connec-
tions must be made now. As a rule of thumb, top
mounting is always an option. The connection at
8. Then the rubber lips are fastened to the profile
(after the assembly of the Channel Duct lengths).
Do this before the suspension of the Channel Duct.
Quite a lot of the supplied soap (the brown sub-
stance in a bag!) is applied to the slit of the Chan-
nel Duct.
NEVER use grease or oilcontaing substances
Now press approx. 30 cm of the neoprene rubber
lips into place (in the slit) at a time. Get a good
hold with both hands and press a small part down
at a time. This is an operation requiring a great
deal of patience. A screwdriver may be used for
pressing down the rubber.
Tryk Husk sæbemiddel
i sprække

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9. Geovent can also offer the use of an assembly
trolley to facilitate the mounting of the rubber lips
on the Channel Duct. Use the soapy substance
in the slit on the Channel Duct and start from one
end. Assembly with tools is an option, when the
Channel Duct has been suspended. Please note:
Two fitters are required for this process – one to
operate the rubber tool, while the other one holds
the roll with rubber lamella.
13. Preparation and mounting of the Trolley (some
spring balancers may be factory-mounted (optional
extras)).
14. Adjustment of the friction of the Channel Duct.
Please see the last page.
15. Now the stop and the end cover are to be
mounted. The end cover is fixed by means of self-
cutting screws, and the stop is fixed with a bolt.
10. Now test that the neoprene rubber lips have been
properly fixed to the Channel Duct. Subsequently
they are fastened with a self-cutting screw in both
ends of the Channel Duct, approx. 2 cm from the
end.
11. Suspension of the Channel Duct in the ceiling, on
the wall or on a concrete girder: We recommend
using two lifts, so that the Channel Duct can be
lifted at the same time. The suspension brackets
are turned onto and are fastened on the bracket
from the wall or from the ceiling. Subsequently,
the bracket is to be fixed to the Channel Duct by
means of self-cutting screws.
12. The connection of the Channel Duct to the fan/
piping system may take place either via top-
mounting or by connecting a transition piece to the
end of the Channel Duct. To be fixed by means of
self-cutting screws.
16. Now the Channel Duct System is to be sealed. Do
so carefully by using silicone or the aluminium sea-
ling agent in places, where the system is not tight.
Often, this is the case at the end of the Channel
Duct and by the duct connections.
2.1 Optional equipment
The Channel Duct System may be supplied with quite a
few optional extras. Below, you will find some pieces of
good advice for the installation/connection of some of
the most common types of optional equipment.
Automatic uncoupling, pneumatically
By using a compressed air nozzle (pneumatic), the
nozzle can be uncoupled at the end automatically.
Automatic uncoupling, mechanically
For mechanic uncoupling, a Bowden cable and a no-
zzle with tool and release device must be used.

9
Automatic start/stop
Wire switch for automatic start/stop of the fan. To be
used in connection with conductor rail and LWS control
panel. May be connected to either 24V (recommended)
or 230V.
Connection diagram for HMO damper
Connection diagram for automatic start/stop
Fitting for micro switch
The wire from the
balancer has to
come through here
Tilting bracket
Micro switch
The start/stop automatics may also be used together
with a quick-action motor damper (for connection,
please refer to the drawing below).
Wire switch/
micro switch
Control panel
LWS
3x400V
+ J
To be coupled in parallel
Fan
Energy saving damper
HMO-24
230V
Trafo
24/230V
Wire switch/
micro switch
To be coupled in parallel
2.2 Trial run – exact adjustment
After the installation has been completed, please check
whether the Trolley can be operated satisfactorily. The
hose is moved to the required working area and subse-
quently it is returned. If this is not satisfactory, then the
trolley can be adjusted according to the instructions in
item 2.3.
We also recommend checking if the fan is supplying the
volume of air, for which the system has been dimensio-
ned. If the suction is not sufficient, then the risk of the
hose melting is increased, and if the suction is too high,
then the trolley will be sluggish to move.
2.3 Adjustment of the Trolley
The trolley has been adjusted by the factory, and the-
refore only an exact adjustment should be carried out,
if the trolley moves slowly. For the adjustment of the
Trolley, please follow the instructions below:
L1
L
N 3
2
1 1
2
3
Transformator
HMO HMO 24
Start/stop switch
AC230V

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4.0 Maintenance
Periodic maintenance
• At regular intervals, the Trolley must be serviced in
order to secure optimum operation.
• In continuation of the above, we also recommend
treatment of the rubber lips with Rocol Teflon spray,
for example, in order to reduce the friction.
• The hose cannot be maintained, however, in order
to secure a long working life overrunning the hose
with any vehicles should always be avoided, check
that the correct volume of air is extracted, and that
the hose does not bend/evert too much just after
the exhaust pipe.
• Measure the volume of air on the Channel Duct
System at least once every year. If the volume of
air is too small, a hole in the hose may be burnt.
At least once annually, the whole point suction plant
should be overhauled by an authorised serviceman.
4.1 Troubleshooting
In case of problems with the Channel Duct, the points
mentioned below may be followed when attempts are
made to solve the problems:
Typical problems with the installation/ mounting of
the Channel Duct:
• Fixation of the neoprene rubber lips. Follow the
mounting instruction in item 2.0.8
Problems with the operation of the Channel Duct.
• The Trolley moves slowly – a pull of more than
10 kg to move the trolley is needed. Adjust the
wheels, reduce the under pressure, mount guide
straps and check that the Channel Duct does not
bend. The rubber lips may have turned brittle, if
they have been exposed to oil/oil vapours. Exchan-
ge the rubber lips with nitrile lips.
Noise problems:
• The base on which the Channel Duct and/or the
fan are/is placed is unstable.
• More air is extracted than for which the equipment
has been dimensioned. Use an adjusting damper.
Problems with the hose:
• The hose melts near the nozzle. This happens if
there is not sufficient suction on the equipment or
if the hose bends much just by the nozzle. May
be rectified by increasing the volume of air or by
exchanging the hose near the suction nozzle with 1
– 2 m of high-temperature hose.
3.0 User instruction - application
After the installation, the Channel Duct does not require
any special instructions. However, the Trolley is of-
ten moved by the operator. In order to secure a long
working life of the system, the trolley must always be
shifted/pulled below the Channel Duct, as shown on the
drawing below. If this is not complied with, the life of the
system will be substantially reduced.
Receiving
Receiving
2. Loosen the nut with a
17 mm fork wrench. The
shaft may now be
adjusted up or down.
Fasten the nut after final
adjustment
3. Loosen the nut with a
17 mm fork wrench. The
shaft may now be adjusted
up or down. Fasten the nut
after final adjustment
1. Loosen the nut with
a 17 mm fork wrench.
The shaft may now be
adjusted up or down.
Fasten the nut after
final adjustment
4. Place the 6 nylon wheels on the
shafts and grease them. Push the
trolley in from the end of the
Channel Duct and control that all 6
wheels are running in the T-track of
the Channel Duct.
5. A stainless rubber guide is to be placed inside the rubber lips when mounting
the trolley on the Channel Duct. In order to facilitate the sliding, we recommend
greasing the inside of the rubber lips with teflon spray e.g. ROCOL.
The Channel Duct System will not work according to
the intentions if …
• Unauthorised parts are mounted on the rail sy-
stem, the Trolley, the hose or on the nozzle.
• The rail system is used for other purposes than for
which it was originally intended.
• The fan is not switched on – the hose will melt!

11
Motorpool
Motorpool
5.0 Liability
Warranty
Geovent A/S grants a warranty for products, which
are defective, when it can be proved that the defects
are due to poor manufacture or materials on the part
of Geovent. The warranty comprises remedial action
(reparation or exchange) until one year after date of
shipment. No claims can be made against Geovent
A/S in relation to loss of earnings or consequential loss
as a result of defects on products from Geovent.
Wear parts like trolley wheels, hoses, etc. are not inclu-
ded in the warranty.
User liability
In order for Geovent to be capable of granting the de-
clared warranty, the user/fitter must follow this Instruc-
tion Manual in all respects.
Under no circumstances may the products be changed
or reconstructed in any way. Any changes causes aboli-
tion of the responsebility of Geovent A/S.
Moreover, we refer to the current terms of sale and
delivery at www.geovent.com.
• For vertical exhaust pipes we recommend using a
06-200 “gooseneck nozzle”.

12
6.0 Declaration of Conformity according to Bilag IIA
HOVEDGADEN 86 • DK-8831 LØGSTRUP
([phone] • [email protected]
Declares as producer hereby that:
Product: Channel Duct System
Model: Type 25
is in accordance with the following Directives and Stan-
dards:
European Parliament and Council Directive 2006/42/EC
of 17 May 2006 on machinery and amending Directive
95/16/EC
EN ISO 14121-1:2007 Risk assessment - Part 1
EN ISO 12100-1:2005 Basic concepts, general princip-
les for design
EN ISO 12100-1:2009 Construction and design
Part 1: Basic terminology, met-
hodology
EN ISO 12100-2:2005 Basic concepts, general princip-
les for design
EN ISO 12100-2:2009 Construction and design
Part 2: Technical principles
Authorized to collect the technical file:
Ole Madsen
Date: 01/04-10
Position: Technical Director
Name: Thomas Molsen
Signature : ____________________________