HOSCH C1 User manual

TYPE C1®
HOSCH
SPRUNG
BLADE
SCRAPERS
Installation and
Operation Manual

©2014 HOSCH
Installation and Operation Manual Type C1®Page 2 of 12
Range of application
Use
Belt conveyor systems tend to soil as a result of bulk material sticking to the return belt and falling down. The
HOSCH Sprung Blade Scraper Type C1®removes, to the extent possible, sticking material from conveyor belts,
before it enters the conveyor line. The C1®can be installed on the return belt after the discharging drum or on
the discharging drum of the conveyor system (see extra sheets). The C1®is designed for use with smooth belts
and true running drums only.
General operating conditions
The HOSCH Sprung Blade Scraper Type C1®can be used as follows:
• for belt widths of 300 to 1,000 mm
• for belt speeds < 2.5 m/s
• for conveyor belts of rubber or PVC with a smooth cover plate and a hardness of 60 to 65° Shore A
• for vulcanized belt joints, in standard design. The cover plate hardness in the junction area may deviate from
the undisturbed section by approx. +/- 5° Shore A. The junction and patched areas in the belt must be level
and undamaged to enable a proper function of the scraper
• in the on-head position, the scraper type C1®is not to be used in combination with mechanical splices
(clamps), untrue running drums or heavy scarred belt surfaces (see extra sheets)
• in a temperature range of max. –20 to +80° C
• by free, undisturbed discharge of the removed material
• scraper must be fixed to sufficiently twist-resistant, low-vibration structural components or consoles
• scraper may only be used in non-explosive environments according to the Directive 94/9/EC.
Optional operating conditions
The HOSCH Sprung Blade Scraper Type C1®may only be used with special accessories in the case of the
following operating conditions:
• Belt runback - Accessory: Runback device RV1
• Reversing operation – Accessory: Disengaging device ASV-C1
• Explosive environments - Accessory: Earthing cable (if the scraper is used in explosive environments
according to Directive 94/9/EC, the ATEX execution of the scraper is to be used)
• Special documents are available for HOSCH Sprung Blade Scrapers Type C1®with special accessories.
Note
The HOSCH Sprung Blade Scraper Type C1®must not be used in other operating conditions without the prior
approval by HOSCH.
This document is subject totechnical modifications

©2014 HOSCH
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Installation and Operation Manual Type C1®
Page 3 of 12
Functional Description
1. Assembly carrier endsection
2. Assembly carrier flange
3. Assembly carrier midsection
4. Cleaning modules
5. Cleaning blade
6. Sprung element
7. Cutting ring screw
8. Stirrup
9. Spindle (M30)
10. Assembly carrier locking ring
Design
The HOSCH Sprung Blade Scraper Type C1®is a so-called main scraper. Characteristic features are the
double row, overlapping and equally spaced spring-bearing cleaning modules.
Function
The essential items of the scraper are its modules (4). During continuous operation, their construction guarantees
the permanent and constant contact with the belt surface. To optimize service life, the modules have a scraping
edge made from tungsten carbide. The modules are fitted with rubber torsion springs to avoid any obstacle on
the belt surface. All modules are inserted into the assembly carrier midsection (3), and tensioned once in place.
System carrier endsections (1) are screwed onto both ends of the assembly carrier. As an option, offset profiles
are available. If required, they are mounted vertically between the assembly carrier endsections and the
assembly carrier midsection. In this way, disruptive profiles can avoid the belt construction for example.
The scraper is screwed to the belt-supporting structure by way of the so-called mounting. The mountings being
rigid, they can be installed whether in front of the assembly carrier (tractive configuration = preferred) or behind
it (pressing configuration). The stirrup of the mounting (8) can pivot by 90° around the spindle axle. The
essential item of the mounting is the spindle (9) with sliding piece. The threaded spindles allow infinitely variable
positioning of the scraper to the belt.
The assembly carrier locking ring (10) connects the scraper with the mounting. It can be adjusted both up and
down, and enables flexible adaptation of the scraper to the belt construction, bearing the hole-pattern in mind.
The assembly carrier locking ring is screw-connected with the assembly carrier endsection by way of two cutting
ring screws (7).
The assembly carrier should always be tensioned as short as possible by both of the assembly carrier locking
rings.
This document is subject totechnical modifications

©2014 HOSCH
I
90°
90°
HOSCH
PC
A
100
ED
F
O
P
G
G
LL
MMM
N
M
J
H
BC
R
S
Q
K
300 - 1000
A
B
C
D
E
F
G
H
I
K
L
M
N
O
P
Q
90
105
37
50
160
142
88
80
50
J38
Ø 14
43
35
226
≥ 15
≤ 135
M30x3,5
100
115
Rmin
Smin
27
54
40
67
Installation and Operation Manual Type C1®Page 4 of 12
Device layout / Characteristics
Belt width (mm)
Index Execution
with K-modules
Note
Before installation and commissioning of the scraper, the conveyor system and the conveyor belt must be
checked for proper function and condition, e.g. mistracking, belt tension, round running of drums, grooved or
patched belt surface, vibrations. In the case of thick layers of sticking material (s > 3 mm) a pre-scraper should
be installed. In the case of special operating conditions (reversing operation, runback, highly damaged belt
surface, vibrations, etc.), the scraper must be equipped with the corresponding accessories.
Please contact HOSCH.
List of tools
The following tools are required for the installation
and maintenance of the scraper (minimum
requirements):
2 pcs. 17 mm ring/open-end spanner;
2 pcs. 19 mm ring/open-end spanner;
1 pc. 46 mm open-end spanner;
1 pc. 8 mm hex. socket screw key;
1 pc. measuring tape 2 m;
1 pc. fitter's square 160x250;
1 pc. one-hand right-angle grinder;
1 pc. wire brush; 1 pc. hand-brush;
1 pc. marking pen or chalk
Dimension table
Spindle positioning and installation dimensions
Installation area for the
mounting with standing or
hanging assembly carrier
locking rings.
Detail: module
pre-tension
Scraper alignment
PC : Assembly carrier
center point
This document is subject totechnical modifications

©2014 HOSCH
Installation and Operation Manual Type C1®
Page 5 of 12
General Danger Notice
• Before carrying out installation or maintenance work on HOSCH Sprung Blade Scrapers, ensure that the
conveyor belt has been stopped and “locked-off”. Do not begin any work that has not been previously
authorised by a responsible works manager and co-ordinated with all the departments involved (such as
electrical engineering, safety departments, production department, operation department). Protective
clothing, in particular safety boots, gloves, helmet and protective glasses are compulsory.
• An authorised work permit from the relevant manager must be obtained prior to any welding and cutting
work. Make sure that appropriate fire extinguishing devices are available.
• When working at height, provide safety devices, for example scaffolds, railings, guard nets, safety belts.
The devices must have been installed or inspected by a specialised company and released, as fit for work.
• Prior to starting work, the serviceman is to consult the person in charge of site safety and establish the
conveyor environment as well as possible specific security instructions.
• Prior to operating the scraper, ensure that the site is completely cleared. All equipment or parts, such as
scaffolds, lifting gears, tools etc. should be removed from the area prior to restarting the conveyor belt.
Guards etc. that may have been dismantled to ease the installation/maintenance must be refitted.
• HOSCH Sprung Blade Scrapers are generally equipped with shock absorbing elasto-mounts. During the
operation, unexpected bouncing movements may occur. Be aware of the nip points! The site operator
should guard the mountings to prevent accidental contact.
• The blade and module cleaning tips are already sharp when delivered. As the risk of injury during
installation or maintenance is very high, protective clothing is compulsory. Prevent the scraper from
unintentional pivoting.
• Due to the friction occurring during operation, the blades or module tips are likely become very hot.
Touching them immediately upon stopping the belt can lead to serious burns.
• The contact between the blades or modules and the running of the conveyor belt can create electrical
charges, sparking may also occur through discharge. Be cautious!
• Mineral or metallic particles may collect on the belt surface and cause sparking when passing the blades or
modules.
• All scraper parts, especially the components situated in the product flow, are subject to extreme wear. The
wearing of the component material may cause sharp edges. The risk of injury is high if this occurs.
• The weakened structures of worn parts are likely to break. To guarantee the personnel and conveyor
safety, these parts have to be replaced with new ones.
• Scraper systems are exposed to high dynamic stress. Therefore, all screwed connections are to be checked
and secured before each commissioning and upon each maintenance. Security elements (spring washers,
counter nuts) should not be re-used. They must be replaced by new parts. In case of mechanical damage
e.g. corrosion, new parts are to be installed.
• Only original, genuine HOSCH parts should be used.
This document is subject totechnical modifications

©2014 HOSCH
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Installation and Operation Manual Type C1®Page 6 of 12
Installation
The blades of the front row of modules are to be positioned 100 mm after the run-off point (PA) at point (PB).
Both points are to be marked on both sides of the frame construction. Make sure that the clearance behind the
scraper to the next components, e.g. roller or chute is sufficient. Minimum space requirements = 300 mm.
2. Determining the assembly carrier center point
PB : Contact point of the front
row of blades with the belt
PC : Assembly carrier center
point
A : 90 mm (100 mm*)
B : 105 (115 mm*)
Starting from point (PB), the center point of the assembly carrier (PC) is to be determined at the frame construc-
tion using measures Aand B. The measures are always to be marked parallel and vertically to the belt direc-
tion.
PC
PB PA
PB
PC
B
A
1. Determining the installation position
PA : Run-off point (point where
belt runs off the pulley)
PB : Contact point of the front
row of blades with the belt
PC : Assembly carrier center
point
* = in case K-Modules are used,
refer to dimension table
This document is subject totechnical modifications

©2014 HOSCH
Installation and Operation Manual Type C1®
Page 7 of 12
Installation
If the installation is carried out at a closed supporting structure, e.g. in the case of lateral chute plates, an open-
ing must be provided for the scraper. The opening must be parallel and vertical to the belt direction. The open-
ing must be dimensioned in such a way that the scraper with the pre-assembled modules can be inserted from
the side.
The spindles are installed vertically to the belt at distance Ffrom the assembly carrier center point. The mount-
ings can be installed whether in front of the assembly carrier (tractive configuration = preferred) or behind him.
The stirrup of the mounting (8) can pivot by 90° around the spindle axle (Section A). The measure Ois the
max. assembly range, Pis the min. assembly range depending on the installation of the assembly carrier
locking rings (see illustration in dimension table). The position of the mounting stirrup is to be selected in such a
way that it can be fixed to stable, twist-resistant components of the supporting structure such as sectional steel
beams.
3. Installation opening
PC
PC
F
A
N
O
P
4. Determining the spindle position
PC : Assembly carrier center
point
F : 142 mm
N : 88 mm
O : 15 mm
P : 135 mm
PC : Assembly carrier center
point
B : 105 mm (115 mm*)
V : min. 200 mm
W : min. 70 mm
X : min. 100 mm
B
VW
W
X
* = in case K-Modules are used,
refer to dimension table
Section A
This document is subject totechnical modifications

©2014 HOSCH
K
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Installation and Operation Manual Type C1®Page 8 of 12
Installation
If the spindles cannot be fixed to the supporting structure sections directly, appropriate intermediate consoles
must be provided. When assembling the mounting and assembly carrier locking rings, make sure they are
installed in such a way that sufficient space (approx. 70 mm) is available on the spindle for tensioning the
scraper against the belt. The assembly carrier locking rings can be mounted in steps of 30 mm variably to the
stirrup of the mounting.
Assemble the assembly carrier midsection and the assembly carrier endsections. Use the supplied screw kit.
Assemble the modules as shown in detail "X": Insert the sprung elements in the sleeves of the assembly carrier
midsection and tighten the plug. Next align all cleaning blades to a uniform, average height level.
6. Pre-assembling and checking the assembly carrier
Cleaning
module,
blade
Cleaning
module,
element
Fixing screws
Assembly carrier
midsection
Assembly carrier
endsection
Module
Detail "X"
5. Mounting the spindle, support and locking ring
K : Ø14 mm
L : 43 mm
M : 35 mm
N : 226 mm
This document is subject totechnical modifications

©2014 HOSCH
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A
A
2
PB
PM
3
2
1
3
1
4
R
S
=
=
= =
=
Installation and Operation Manual Type C1®
Page 9 of 12
Installation
Insert the pre-assembled assembly carrier in the assembly carrier locking rings. Spindle up the assembly carrier
on both sides evenly until the scraping edges have slight contact with the belt and the assembly carrier is paral-
lel (2) to the belt surface. Then center the assembly carrier (1) to the belt. Turn the assembly carrier until the
assembly carrier flanges are parallel and/or vertical (3) to the belt. Finally arrest the assembly carrier by
tightening the cutting ring screws. If necessary, adjust the height of the modules to the existing belt contour until
they contact the belt without any gap (4).
Mark the position of the untensioned scraping edges (1) with a chalk line (PB) on the belt. Spindle up the
assembly carrier evenly on both sides (2), while pulling back the module arms manually (3). Continue the
tensioning procedure until the distance S(4) between the angle and the scraping edges is reached. For that,
place the angle at point PM = center of module slewing axle. Alternatively, you can use the measure (S- R) =
27 mm. Then tighten the spindle nuts.
Section A-A
8. Pre-tensioning the scraper
PB : center of module slewing
axle
PM : contact point of the front
row of blades with the belt
7. Aligning the assembly
carrier
R : 27 mm (40 mm*)
S : 54 mm (67 mm*)
* = in case K-Modules are used,
refer to dimension table
This document is subject totechnical modifications

©2014 HOSCH
12
Installation and Operation Manual Type C1®Page 10 of 12
Installation
Check all fixing elements of the scraper, re-tighten and secure screws (1). Check function and free motion of all
scraper components. Check assembly using the installation checklist (2).
In case the assembly carrier end sections jut out over the passage, they can be cut off up to the mounting.
Check if the cleaning function of the scraper is OK. If necessary, readjust the height of individual modules.
Check if the scraper works smoothly and without vibrations. Check if the loading width of the belt corresponds
to the cleaning width of the scraper. Belt junctions, patches or other defects must pass the scraper without caus-
ing any problems. Check system for mistracking and runback.
9. Checking the installation
10. Trial run with material
Minimum period of trial run
with material = 0.5 hrs
This document is subject totechnical modifications

©2014 HOSCH
Installation and Operation Manual Type C1®
Page 11 of 12
Maintenance and Service
To maintain its performance, the HOSCH Sprung Blade Scraper Type C1®must be inspected and serviced
regularly.
First inspection:
Directly after the first full working day of a scraper, a visual inspection should be carried out. In this inspection,
the function of the device, the cleaning efficiency, the material discharge and the working behavior of the
scraper should be checked. In addition to that, the belt surface, the belt junctions and patches are to be
checked.
Follow-up inspections:
The intervals for follow-up inspections are variable and mainly depend on the operating conditions of the
scraper. Generally, the inspections should be carried out at intervals of 4 weeks. If necessary, the inspection
intervals must be shorter. The follow-up inspections include the same steps as the first inspection. Additionally,
the degree of wear of the modules must be assessed, and any material sticking to the scraper must be removed,
if necessary. When cleaning the scraper, make sure not to damage the anti-corrosion coat or the scraping
edges of the modules. CAUTION – Damaged tungsten carbide parts of the modules can damage the belt
surface.
Maintenance:
Depending on the degree of wear, the scraper must undergo a regular service inspection. A maximum of 4.000
operating hours is a very general value for the time between two service inspections. Depending on the type of
installation and the material conveyed, this value may differ greatly, however. Please coordinate the service
intervals with HOSCH. The following work is to be carried out:
• Cleaning of all scraper components
• Disassembly of the assembly carrier
• Functional check of all components
• Assessment and, if necessary, repair of anti-corrosion coat of all components
• Assessment of the degree of wear of all components
• Replacement of worn-out or damaged parts by original parts
• If used modules are reinstalled, the scraping edges must be rounded, otherwise the belt surface may be
damaged
• Installation and re-adjustment of the scraper according to the installation & operating instructions.
Wearing parts
The modules are subject to constant wear. They must be replaced if the height of the tungsten carbide tip is
inferior or equal to 2mm. All rubber springs are subject to material fatigue. For this reason it is recommended
that modules with a low tungsten carbide wear should be replaced after approx. 8.000 operating hours in
order to maintain a good operating result and plant safety. New screw securing elements must be installed in
each service inspection.
HOSCH Service
The required inspection and service intervals can be coordinated with HOSCH's Service Department if
requested. HOSCH service staff is available world-wide to carry out the work. Additionally, HOSCH offers its
customers training seminars on the selection, installation, inspection and service of its belt conveyor cleaning
systems.
This document is subject totechnical modifications

HOSCH Headquarters
The HOSCH Group
HOSCH Equipment (India) PVT Ltd.
Calcutta, India
e-mail: [email protected]
HOSCH Italia S.R.L.
Pontecagnano, Italy
e-mail: [email protected]
HOSCH Techniki Transportowe Polska Sp. z o.o.
Wrocław, Poland
e-mail: [email protected]
HOSCH Fördertechnik (SA) (Pty) Ltd.
Johannesburg, South Africa
e-mail: [email protected]
HOSCH Iberia S.R.L.U.
Barcelona, Spain
e-mail: [email protected]
HOSCH COMPANY
Pittsburgh, USA
e-mail: [email protected]
HOSCH International Pty Ltd.
Perth, Australia
e-mail: [email protected]
HOSCH do Brasil Ltda.
Belo Horizonte, Brazil
e-mail: [email protected]
HOSCH France S.A.R.L.
Réau, France
e-mail: [email protected]
HOSCH Schweiz GmbH
Rotkreuz, Switzerland
e-mail: [email protected]
HOSCH (G.B.) Ltd.
Thornaby, Great Britain
e-mail: [email protected]
HOSCH Hellas Monoprosopi E.P.E.
Thessaloniki, Greece
e-mail: [email protected]
HOSCH-Fördertechnik GmbH
Am Stadion 36, 45659 Recklinghausen, Germany
Tel: [phone], Fax: [phone]
e-mail: [email protected], web: www.hosch.de
HOSCH Austria GmbH
Techelsberg am Wörther See, Austria
e-mail: offi[email protected]
12031 - 130314 - DE - EN
Installation and Operation Manual Type C1®Page 12 of 12
©2014 HOSCH-Fördertechnik GmbH
No part of this publication may be reproduced, transmitted, transcribed, stored in any retrieval system or translated into any human or
computer language by any means or in any form, without the prior written permission of HOSCH-Fördertechnik GmbH. Contravention
of the owner's copyright may also reduce the ability of HOSCH-Fördertechnik GmbH to provide effective support for its equipment.
HOSCH-Fördertechnik GmbH reserves the right to make changes without notice to both this document and to its products described
within this document. Nothing in this publication represents any contractual or other commitment on the part of HOSCH-Fördertechnik
GmbH and should not be taken as such. All possible care has been taken in the preparation of this publication.
However, if you find any errors or would like to make suggestions for improvement then write to HOSCH-Fördertechnik GmbH.
This document is subject totechnical modifications