Preco S Series Quick start guide

1
FLIGHT CONVEYOR
S and SL series
ASSEMBLY AND OPERATIONAL
MANUAL
TC N RU Д-LV.AУ14.B.21742
2017

2
Contents
Introduction 3
EU Declaration of conformity 4
Safety instructions 5
General safety 5
Electrical safety 6
Safety decals 7
Technical description and specifications 8
Conveyor assembly 11
Tension section 12
Drive section 12
Overloading membrane 13
Bend section 13
Top cover dismantling 14
Tension section, extensions, drive section 15
Chain tension 17
Inlet assembling 18
Outlet assembling 19
ACCESSORIES 20
Weather cover for motor 21
Lateral outlet slide 22
Double-sided inlet 23
Covered double-sided inlet 24
Shaft speed monitor 25
Electrical assembly 26
Starting up 27
Maintenance 28
Troubleshooting 29
Warranty conditions 30
Attachments 34

3
Introduction
This assembling and operational manual contains information about flight conveyor technical
specifications, main parts, accessories, assembling, and general and electrical safety instructions.
Preco Ltd. is the metal processing and grain handling equipment manufacturer with more
than 10 years of experience. Working for agriculture and industrial sectors. We are implementing
relevant enhancements and improvements considering the technological development and
customer needs. Our long-term experience allows us to offer customized solutions for each
customer. Our target is not to deliver metal structures, but individual solutions.
Preco flight conveyors are ideal for product transportation horizontally or at an angle up to 45
degrees. Available in various models and sizes, depending on required capacity. Developed for daily
all year round operation. Conveyors supplied as stand-alone equipment or as part of a turnkey plant.
Important!
Please read this manual carefully before assembly and use.
Only qualified electrician must do electrical connections.
During installation, maintenance or repair disconnect and secure electric supply against
accidental reconnection.
CE marking type plate:
Type plate fitted on the transmission side of the drive, is a proof that the machine manufactured in
accordance with EU machine directives, and complies with safety requirements.
A –manufacturer
B –CE marking
C –conveyor type / model
D–conveyor serial number
E –year of production
C
A
B
E
D

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EU DECLARATION OF CONFORMITY
Manufacturer: “PRECO” Ltd.
Address: 16 Dravnieku Street, Lielvarde,
LV-5070, Latvia
Phone: [phone]
e-mail: [e-mail]
We declare that
Equipment: Flight conveyors
Type: S40, S60, S80, S100, S150, S200, S250, S300, S400, S500 /
S40L, S60L, S80L, S100L, S150L, S200L, S250L, S300L, S400L, S500L
Year of production: 2017
Designed and manufactured in accordance to following directives and standard regulations:
MK Nr.195 - 2008.03.25. (2006/42/EU) Machinery Directive
TP TC 010/2011 Technical Regulation of the Customs Union
MK Nr.209 - 2016.04.12. (2014/35/EU) The Low Voltage Directive
TP TC 004/2011 and TP TC 020/2011 Technical Regulation of the Customs Union
LVS EN ISO 12100:2011 Safety of machinery - General principles for design - Risk
assessment and risk reduction
LVS EN ISO 13857:2008 Safety of machinery - Safety distances to prevent hazard zones
being reached by upper and lower limbs
TC N RU Д-LV.AУ14.B.21742
Lielvarde, 2017
“PRECO” Ltd.
……………………………….
Kristaps Grauzdulis
Head of Design office

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Safety instructions
General safety
It is buyer`s responsibility to keep assembly and operational manual available for assembly workers,
electricians, maintenance and engineering technicians at any time. Incorrect assembly and/or
operation may lead to personal injury or damage to the equipment. It can also cause malfunctions
or a reduction in capacity.
Read the assembly and operational manual carefully before assembly, electrical connection,
maintenance or operation start. If any part of these instructions is not understandable, please get in
touch with seller for assistance.
The safety information presented and interpreted as follows:
WARNING!
Disregarding instructions given in warnings can cause serious personal injury or death.
Ignoring the instructions given may cause damage to the conveyor equipment.
Ensure that everyone responsible for assembly, electrical connection, maintenance and operation
of the conveyor has read and understood the instructions and safety information.
Use protective gloves, helmet, steel-toed boots, ear defenders, protective goggles and high
visibility vest when carrying out assembly, electrical connection, maintenance and operation of
conveyor.
You cannot stand or walk on the conveyor.

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IMPORTANT!
For drive and tension section maintenance, whose supports are located at a height of more
than 1.8 m from the floor and rotating parts are located at a height more than 2.0 m from
the floor it is necessary to assemble service platform with handrail. The aisle for
maintenance should be at least 0.7 m wide.
Preco does not deliver conveyor supports. It is a customer responsibility to arrange
supports for the conveyor. Maximum distance between them should not exceed 6000 mm.
All rotating parts must be safely secured and protected. Do not operate with safety guards
re removed.
Electrical safety
WARNING!
Stop the conveyor and turn off electric power before attempting any type of assembly, electrical
connection or maintenance work.
Do not start the conveyor without the lid, hatches, covers, guards and connections fitted properly.
All electrical connections must be mounted properly and fully enclosed. Qualified electrician must
do work.
Forbidden conveyor use without grounding.
IMPORTANT!
If the conveyor assembled outdoors, it must be fitted with a weather cover for motor.
If a short circuit should occur, ensure that the electrical equipment is in working order before
continuing an operation.
Ensure that the electrical equipment kept free from dirt, dust, moisture and electrostatic charge.

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Safety decals
Chain conveyor supplied with safety decals on delivery. It is a buyer`s responsibility to stick them on
the conveyor, as shown in the scheme (below).
1.
Read instruction carefully before use!
2.
High voltage! Electric shock risk
3.
Warning for rotating drum
4.
Warning for rotating drive shaft
5.
Electrical grounding (on the side of the
conveyor)
6.
Do not touch rollers while in operation

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Technical description and specification
Flight conveyor manufactured from galvanized sheet metal (275 g/m2) in accordance with the
EU Machinery Directive 2006/42/EC, EU Low Voltage Directive 2006/95/EC and designed in
accordance with EN ISO 12100 part 1-2 which guarantees machinery safety.
Intended for horizontal transportation of free flowing materials used in agricultural, food and
other industries. Conveyors are developed for daily, continuous and all year round operation, and
will fulfil most rigid requirements of the grain industry. Model give the following capacities based on
grain with 15 % moisture content, bulk density 750 kg/m3, at specified chain speed. Please notice
that every 1 % increase in moisture content above 15 % decreases capacity by 3-4 %.
Model
S8040
S80L40
S8060
S80L60
S80
S80L
S100
S100L
S150
S150L
S200
S200L
S500
S500L
Capacity*, up to t/h
40
60
80
100
120-150
200
500
Capacity*, up to m3/h
53
80
106
133
160-200
266
666
Chain speed, m/s
0.48
0.71
0.94
0.82
0.76-
0.96
0.88
0.76
Chain type, FV
90-100
112-125
140-160;
180-160
250-160;
315-160;
400-160
Tension (A), mm
810
1250
1540
Drive (B), mm
1250
2040
Width (C ), mm
230
330
390
900
Height (D), mm
410
510
590
650
Thickness, mm
Side/Top/Floor
2/1.5/2
3/1.5/3
4/3/5

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Power consumption kW for conveyors without bend section:
Model
Power
S8040
S8060
S80
S100
S150120
S150150
S200
1.5 kW
5
2.2 kW
6-8
5
3.0 kW
9-12
6-7
5-6
4.0 kW
13-16
8-10
7-8
5-6
5
5.5 kW
17-22
11-14
9-11
7-8
6-7
5
7.5 kW
23-30
15-19
12-15
9-10
8-9
6-7
5-6
9.2 kW
20-23
16-18
11-13
10-11
8-9
7
11.0 kW
24-26
19-21
14-17
12-14
10-11
8-9
15.0 kW
27-30
22-29
18-23
15-18
12-16
10-12
18.5 kW
30-
24-29
19-22
17-19
13-14
22.0 kW
23-25
20-23
15-17
30.0 kW
18-24
37.0 kW
25-29
45.0 kW
30-
Power consumption kW for conveyors with bend section:
Model
Power
S80L40
S80L60
S80L
S100L
S150L120
S150L150
S200L
1.5 kW
5.6
2.2 kW
6.6
3.0 kW
7.6-9.6
5.6
5.6
4.0 kW
10.6-12.6
6.6-7.6
6.6
5.5 kW
13.6-17.6
8.6-11.6
7.6-9.6
5.6
5.6
5.6
7.5 kW
18.6-24.6
12.6-15.6
10.6-12.6
6.6-8.6
6.6-7.6
6.6
9.2 kW
25.6-30.6
16.6-19.6
13.6-15.6
9.6-10.6
8.6
7.6
5.6
11.0 kW
20.6-21.6
16.6-17.6
11.6-14.6
9.6-10.6
8.6
6.6-7.6
15.0 kW
22.6-29.6
18.6-24.6
15.6-19.6
11.6-14.6
9.6-12.6
8.6-10.6
18.5 kW
25.6-29.6
15.6-18.6
13.6-15.6
11.6
22.0 kW
16.6-18.6
12.6-14.6
30.0 kW
15.6-20.6
37.0 kW
21.6-25.6

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Flight conveyor consist of:
Tension section with push-type chain tensioner (1)
Intermediate sections with 2 inspection windows (4)
Chain with PEHD flights
Intermediate sections in needed length (3)
PEHD bottom wear out plates, t=10mm
Inlet with flange (2)
Outlet with flange (7)
Bend section (5) (as additional)
Drive section (6) with fitted NORD direct mounted parallel shaft gearbox with electric motor
Connection plates between sections (8)
WARNING!
Forbidden conveyor use without electrical grounding

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Conveyor assembly
Please check that there is enough space for conveyor assembly. The conveyor can be
assembled directly in the place or assembled separately and then lifted in place. Find out location of
inlet and outlet before starting the assembly. Conveyor consists of tension section, intermediate
sections, bend section, drive section, chain, overloading membrane, inlet and outlet. As accessories,
we offer different type of inlets and outlets, weather cover for motor, reversible drive unit, shaft speed
monitor with cover, inline and lateral outlet slides.
Notice!
During assembly, make sure that the bolts are placed on the outside of conveyor with the nuts
placed on the inside of conveyor.
Bolt tightening need to be done according to maintenance instructions.
Bolt torque table (Nm)
Bolt size
Bolt strength grade
8.8
10.9
12.9
M4
3.2
5
6
M5
6.4
9
11
M6
11
16
19
M8
27
39
46
M10
53
78
91
M12
92
135
155
M16
230
335
390
M20
460
660
770
M24
790
1150
1300
M30
1600
2250
2650
M36
2780
3910
4710
M42
4470
6290
7540

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Tension section
Manufacturer delivers tension section completed and assembled. Fitted with threaded rods (1) for
chain tensioning.
Drive section
Drive section is complete with gearbox and motor (1), and fitted overloading membrane (2).
For motor maintenance and overloading membrane manual, please see the attached supplier
information.

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Overloading membrane
Black arrow shows the place where overloading sensor MOLLET MFE-NN is assembled. It comes
assembled by Preco.
For overloading membrane manual instructions, please see the attached supplier information.
Bend section
Bend section is complete and assembled at Preco.
Connect bend section (4) to extension from one side and drive section (3) from over side, as shown
in picture below.

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Top cover dismantling
Before you start to assemble tension section, intermediate sections and drive section, you
have to dismantle top covers (1), please see picture below. Dismantled bolts and nuts you will need
when top covers will be assembled back on to conveyor.
1. Top cover
2. Top connection plates
3. Bend connection plates (if applicable)
4. Side connection plates

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Tension section, extensions and drive section
Standard extension length is 2.4 m, with inspection window fitted. The extensions are
available in four lengths: 0.3 m, 0.6 m, 1.2 m and 2.4 m. Combining these lengths will be possible
to extend conveyor at the needed length. Bend section is available in 15, 30 or 45 degrees.
Fit side and bottom connection plates to tension section. Bolt them together. Do the same
with intermediate sections and drive section, as shown in the picture below.
Connect tension section (1) with already assembled intermediate sections (2), already
assembled bend section (4) and drive section (3) using connection plates (5). Bolt them together with
bolts and nuts provided.
1. Tension section
2. Intermediate section
3. Drive section
4. Bend section
5. Connection plates
Bolts and nuts
Part
Conveyor model
S80; S100
S150
S200
Bottom
plate
DIN6921 M8x25/1
DIN6923 M8/1
DIN6921 M8x30/1
DIN6923 M8/1
DIN6921 M10x30/1
DIN6923 M10/1
Top plate
DIN6921 M8x16/1
DIN6923 M8/1
DIN6921 M8x16/1
DIN6923 M8/1
DIN6921 M10x20/1
DIN6923 M10/1
Side plate
DIN6921 M8x20/1
DIN6923 M8/1
DIN6921 M10x25/1
DIN6923 M10/1
DIN6921 M10x30/1
DIN6923 M10/1

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If you have a conveyor with more than one intermediate sections and/or extensions, connect
them first and assemble drive section at the end.
Preco does not deliver conveyor supports. It is a customer responsibility to arrange supports.
Maximum distance between them should not exceed 6000 mm.
Important!
The conveyor must be 100% levelled on the width direction and 100% aligned in the length
direction.
For the right bolts and nuts, please see table below:
Bolts and nuts for connection plates
Part
Conveyor model
S80; S100
S150
S200
Bottom
plate
DIN6921 M8x25/1
DIN6923 M8/1
DIN6921 M8x30/1
DIN6923 M8/1
DIN6921 M10x30/1
DIN6923 M10/1
Top plate
DIN6921 M8x16/1
DIN6923 M8/1
DIN6921 M8x16/1
DIN6923 M8/1
DIN6921 M10x20/1
DIN6923 M10/1
Side plate
DIN6921 M8x20/1
DIN6923 M8/1
DIN6921 M10x25/1
DIN6923 M10/1
DIN6921 M10x30/1
DIN6923 M10/1
Inlet
DIN6921 M8x16/1
DIN6923 M8/1
DIN6921 M8x16/1
DIN6923 M8/1
DIN6921 M10x20/1
DIN6923 M10/1
Outlet
DIN6921 M8x16/1
DIN6923 M8/1
DIN6921 M8x20/1
DIN6923 M8/1
DIN6921 M10x20/1
DIN6923 M10/1
Outlet
slide
DIN6921 M8x30/1
DIN6923 M8/1
DIN6921 M10x30/1
DIN6923 M10/1
DIN6921 M10x25/1
DIN6923 M10/1

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Chain tension
Pull the chain into the conveyor. Shorten if necessary. Connect the chain (1) with chain connections
(2), as shown in the picture below. Arrow shows chain direction. Assemble chain and tighten it with
tighten bolts on the tension section.
The gap between conveyor side and chain must not exceed 1-2 mm.
1. Chain with PEHD flights
2. Chain connection

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Inlet assembling
Attach assembled inlet to the flight conveyor intermediate section (1), cut the hole for inlet and
drill the holes for bolt assembling, as it is shown in the picture below at the minimum distance of
1000 mm from tension section end. Use inlet parts as stencil. Then bolt the inlet flange (2) and put
a silicone around it. Please note: manufacturer delivers silicone. See picture below.
1. Intermediate section
2. Inlet flange
Bolts and nuts
Part
Conveyor model
S80; S100
S150
S200
Inlet
DIN6921 M8x16/1
DIN6923 M8/1
DIN6921 M8x16/1
DIN6923 M8/1
DIN6921 M10x20/1
DIN6923 M10/1
1. Inlet flange
2. Top cover
3. Hole for the inlet
4. Conveyor side plate
5. Conveyor bottom
6. Intermediate floor
7. Intermediate floor
8. Covering part

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Outlet assembling
Attach outlet flange (2) to drive section (1) and bolt it using bolts and nuts, as shown in the
picture below.
1. Drive section
2. Outlet flange
Bolts and nuts
Part
Conveyor model
S80; S100
S150
S200
Outlet
DIN6921 M8x16/1
DIN6923 M8/1
DIN6921 M8x20/1
DIN6923 M8/1
DIN6921 M10x20/1
DIN6923 M10/1

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ACCESSORIES