mhouse WS2S User Manual

MhouseKit WS2

S

For power-operated swing gate

Installation instructions and warnings, and User Manual

IS0004A00EN 28-03-2011

GENERAL SAFETY WARNINGS AND PRECAUTIONS

STEP 1 2

KNOWLEDGE OF THE PRODUCT AND PREPARATION FOR
INSTALLATION

STEP 2 2

2.1 - PRODUCT DESCRIPTION AND INTENDED USE 2

2.2 - COMPONENTS USED TO SET UP A COMPLETE SYSTEM 3

PRELIMINARY CHECKS FOR INSTALLATION

STEP 3 3

3.1 - CHECKING SUITABILITY OF GATE TO BE AUTOMATED AND

RELATIVE ENVIRONMENT 3

3.2 - PRODUCT APPLICATION LIMITS 3

3.3 - PRODUCT DURABILITY 3

STEP 4 4

4.1 - PRELIMINARY CHECKS FOR INSTALLATION 4

4.2 - PREPARING ELECTRIC CABLES 4

INSTALLATION: ASSEMBLY AND CONNECTION
OF COMPONENTS

STEP 5 6

5.1 - INSTALLING THE GEARMOTOR WS1SK-WS1SC 6

STEP 6 9

6.1 - INSTALLING AND CONNECTING PHOTOCELLS PH100 9

6.2 - INSTALLING AND CONNECTING THE FLASHING LIGHT FL100 9

PROGRAMMING

STEP 7 11

7.1 - POWER SUPPLY CONNECTION 11

7.2 - INITIAL CHECKS 11

7.3 - LEARNING CONNECTED DEVICES 11

7.4 - LEARNING THE GATE LEAF OPENING AND CLOSING ANGLES 11

7.5 - CHECKING THE RADIO TRANSMITTERS 11

7.6 - SETTING 11

TESTING AND COMMISSIONING

STEP 8 12

8.1 - TESTING 12

8.2 - COMMISSIONING 12

MAINTENANCE

STEP 9 13

PRODUCT DISPOSAL 13

FURTHER INFORMATION

STEP 10 13

10.1 - ADVANCED SETTINGS 13

10.2 - OPTIONAL ACCESSORIES 15

10.3 - ADDING OR REMOVING DEVICES 17

10.4 - MEMORIZING ALL RADIO TRANSMITTERS 18

10.5 - TROUBLESHOOTING 20

10.6 - DIAGNOSTICS AND SIGNALS 20

TECHNICAL SPECIFICATIONS OF PRODUCT
COMPONENTS 23

APPENDIX 1 - EC declaration of conformity 27

USER’S GUIDE

STEP 11 28

11.1 - SAFETY INSTRUCTIONS 28

11.2 - GATE CONTROL 28

11.3 - MANUALLY RELEASING OR LOCKING THE GEARMOTOR 28

11.4 - MAINTENANCE OPERATIONS ADMISSIBLE TO THE USER 29

11.5 - REMOTE CONTROL BATTERY REPLACEMENT 29

11.6 - REMOTE CONTROL BATTERY REPLACEMENT 29

APPENDIX 2 - EC declaration of conformity 31

CONTENTS

English

English – 1

English

2 – English

GENERAL SAFETY WARNINGS AND PRECAUTIONS

KNOWLEDGE OF THE PRODUCT AND PREPARATION FOR INSTALLATION

––– STEP 2 –––

2.1 - PRODUCT DESCRIPTION AND INTENDED USE

The devices in this kit, plus other accessories (some optional and not
included in the pack), form the automation system named “WS2S”,
designed for the automation of a “residential” swing gate. Any other use

than as specified herein or in environmental conditions other than as
stated in this manual is to be considered improper and is strictly pro­hibited!

The main part of the automation comprises an electromechanical gearmo­tor, fitted with a 24 V dc motor with helical teeth gear; it is fitted with a
mechanical key release which enables manual movement of the gate in
the event of a power failure. The gearmotor is equipped with a control unit
that manages operation of the entire automation. The control unit com­prises a board and incorporated radio receiver which receives the com-

NOTES TO MANUAL

• This manual describes how to set up a complete and optimal
automation, such as that shown in fig. 1, using all Mhouse devices
that are part of the automation system named “WS2S”. Some of
these devices are optional and may not be present in the kit. For a
complete overview of the devices, refer to the MHouse product
catalogue.

• This manual has been drawn up as a step-by-step guide

. There­fore, to ensure safe and facilitated assembly and programming
procedures, perform all operations described in the same order as
specified in this document.

• CAUTION! - Never power up the motor before fully installed
on the column and leaf of the gate.

• During installation, handle the automation with care, avoiding the risk of
impact, dropping or contact with any type of liquid. Never place the
product near to sources of heat and never expose to naked flames. This
may damage product components and cause malfunctions, fire or haz­ardous situations. If this occurs, suspend installation immediately and
contact the MhouseTechnical Assistance.

• Never make modifications to any part of the product. Operations other
than as specified can only cause malfunctions. The manufacturer
declines all liability for damage caused by makeshift modifications to the
product.

• If the power cable is damaged, it must be replaced exclusively by a
qualified technician, to avoid potential risks.

• Connect the control unit to an electric power line equipped with an
earthing system.

• This product is not designed to be used by persons (including children)
whose physical, sensorial or mental capacities are reduced, or with lack
of experience or skill, unless suitable instructions regarding use of the
product have been provided by a person responsible for safety.

• The key-operated selector switch must be positioned in sight of the
automation, but far from moving parts and at a height of at least 1.5 m
from the ground, not accessible by the public. If this is used in “hold-to­run” mode, ensure that there are no persons in the vicinity of the
automation.

• In the vicinity of the automation children must be supervised to ensure
that they do not play with it.

• Ensure that there are not points of entrapment or crushing with fixed
parts when the gate leaf is in the maximum opening or closing position;
protect parts if necessary.

• The product may not be considered an efficient system of protection
against intrusion. If an efficient protection system is required, the
automation must be integrated with other safety devices.

• The automation must not be used before performing the commissioning
procedure as specified in the chapter “Testing and commissioning”.

• Check the automation frequently to ensure there is no imbalance, signs
of wear or damage to electrical or mechanical parts. Do not use the
automation if adjustments or repairs are necessary.

• In the event of long periods of disuse, to avoid the risk of leaks of harm­ful substances from the optional battery (PR1) disconnect it from the
automation and store in a dry location.

• Do not allow children to play with fixed control devices. Keep remote
control devices out of reach of children.

• The product’s packaging materials must be disposed of in full compli­ance with local regulations.

Operation warnings

• For cleaning the product surfaces, use a soft damp cloth. Use water
only; never use detergents or solvents for cleaning.

––– STEP 1 –––

Safety warnings

• CAUTION! – This manual contains important instructions and
warnings for personal safety. Incorrect installation could cause seri-

ous physical injury. Carefully read all parts of this manual before starting
any work. If in doubt, suspend installation immediately and contact the
Mhouse Technical Assistance.

• CAUTION! – Important instructions: keep this manual in a safe
place to enable future product maintenance and disposal proce­dures.

• CAUTION! – According to the most recent European legislation,
the production of a power-operated door or gate must comply with
the standards envisaged in the Directive 2006/42/EC (Machinery
Directive) and in particular standards EN 12445; EN 12453; EN
12635 and EN 13241-1, which enable declaration of presumed
conformity of the automation. In consideration of this, all mains
connection, testing, commissioning and maintenance operations
must be performed exclusively by a qualified and skilled techni­cian.
All preliminary set-up, installation and programming operations
may be performed by personnel with standard skills, provided
that all instructions and the relative sequences in this manual are
strictly observed, with particular reference to the warnings in this
STEP 1.

Installation warnings

While reading this manual, take care to observe all instructions
marked with the following symbol:

These symbols indicate subjects that may be the source of potential
hazards and therefore the prescribed operations must be performed
exclusively by qualified and skilled personnel, in observance of
these instructions current safety standards.

• Before installation, ensure that this product is suitable for automation of
your gate or door (see STEP 3 and chapter “Product Technical Specifi­cations”). If not suitable, do NOT proceed with installation.

• On the system power mains install a device for disconnection (not sup­plied), to guarantee a gap between contacts and complete disconnec­tion in the conditions of overvoltage category III.

• All installation and maintenance operations must be performed
with the automation disconnected from the power supply. If the
power disconnect device is not visible from the location of the automa­tion, before work a notice should be affixed on the disconnect device,
with the text “CAUTION! MAINTENANCE IN PROGRESS”.

English

English – 3

mands sent by the user via a transmitter. It can memorise up to 256
GTX4 transmitters (if memorised in “Mode I”) and up to 6 pairs of PH100
photocells.
Connection of the control unit with the various devices is by means of a
single 2-wire cable (“ECSbus” system). The control unit can also be
mains-powered (230 V) or alternatively by the Mhouse PF photovoltaic
system.
If powered from the mains, it can house a buffer battery (model PR1,
optional accessory), which ensures that the automation can perform a
number of manoeuvres for several hours in the event of a power failure.
During the power failure, or at any other time, the gate leaf can be moved
manually if required, by first releasing the gearmotor using the relative key
(see chapter 11.3 - User’s Guide).

2.2 - COMPONENTS USED TO SET UP A COMPLETE
SYSTEM

Fig. 2 illustrates all components used to set up a complete system, such
as that shown in fig. 1.The components are:

A - 2 electromechanical gearmotors WS1SK with fixing brackets
B - 2 fixing plates
C - 3 release keys
D - 1 pair of PH100 photocells (one TX and one RX)
E - 2 protection caps
F - 2 GTX4 radio transmitters
G - 1 FL100 flashing light with integrated aerial
H - Fixing

brackets and curved anti-shear arms: the screws required
for fixing the slotted arms are not supplied, as they depend on the
material and thickness of the leaf.

I - 2 limit switch stops (they are not supplied in the pack and are not

part of the Mhouse product range).

L - Metal hardware

Note - Some devices and accessories specified in the manual are option­al and may not be present in the kit. .For a complete description, refer to
the Mhouse product catalogue or visit the website www.mhouse.com.

––– STEP 3 –––

3.1 - CHECKING SUITABILITY OF GATE TO BE

AUTOMATED AND RELATIVE ENVIRONMENT

• Ensure that the mechanical structure of the gate complies with current
national standards and that it is suitable for automation. For this check,
refer to the information specified on the gate dataplate. Important -
This product cannot be used to automate a gate that is not already effi­cient and safe; furthermore it cannot solve defects caused by incorrect
gate installation or poor maintenance.

• Manually move the gate in both directions (opening/closing) and ensure
that friction is constant throughout travel (there must be no points of
increased or decreased force).

• If the leaf is fitted in a pedestrian pass door or a door onto the leaf
movement area, ensure that this door does not obstruct normal travel,
and install a suitable interlock device if necessary.

• Manually move the gate to any position; leave it stationary and ensure
that it does not move when left.

• Ensure that the space around the site of gearmotor installation enables
safe and easy manual gate release.

• Ensure that the selected surfaces for installation of the various devices
are solid and guarantee a stable fixture; as regards photocells, select a
flat surface that guarantees correct alignment between photocells (Tx
and Rx).

• Ensure that all devices to be installed are in a sheltered location and
protected against the risk of accidental impact.

3.2 - PRODUCT APPLICATION LIMIT

Before proceeding with installation, perform the following checks in the
specified sequence and ensure conformity both with the data in this
paragraph and the technical data provided in the chapter “Technical
Specifications”.

1 - Ensure that the dimensions and weight of the gate are within the fol-

lowing limits of use:

WS2S - maximum length 2.2 m

- maximum weight 200 kg.

- opening angle 110°

On the basis of the leaf opening angle (fig.6), that it is possible to

observe the values specified in the graph of fig. 4;
On the basis of value “B”, and the leaf opening angle in the table, val­ue “A” can be calculated. For example: if B is equal to 100 mm and
an opening of 100° is required, A must be approximately 180 mm.

2 - Check the overall dimensions of the gearmotor (fig. 3). Note – These

measurements also serve as a reference to calculate the space
occupied by the foundation pit for routing the electrical cable duct­ing.

3 - Ensure that the estimated lifetime is compatible with the intended use

(see paragraph 3.3).

4 - Ensure that all limits, conditions and warnings in this manual can be

observed.

3.3 - PRODUCT DURABILITY

The lifetime is the average economic duration of the product. The value of
lifetime is strongly influenced by the intensity of the manoeuvres, i.e. the
sum of all factors that contribute to product wear, see Table 1. To esti­mate the durability of your automation, proceed as follows:

01. Add up all the values in the items of Table 1;

02. In Graph 1 from the value obtained above, trace vertical line until it

intersects the curve; from this point trace a horizontal line until it
intersects the line of the “manoeuvre cycles”. The value obtained is
the estimated lifetime of your product.

The lifetime values specified in the graph are only obtainable if the main­tenance schedule is strictly observed (see chapter 9 - Maintenance
schedule). The estimation of lifetime is made on the basis of design cal­culations and the results of tests performed on prototypes. As it is only an
estimation, it does not represent any form of guarantee on the effective
lifetime of the product.

Example of durability calculation: automation of a gate with a leaf length
of 1.8 m with weight of 120 kg, for example, in a location subject to
strong winds. Table 1 states the “severity index” values for this type of
installation: 25 % (“Leaf length”), 10% (“Leaf weight”) and 15% (“Installa­tion in windy zone”).
These values must be added up to obtain the overall severity index,
which in this case is 50%. With the value obtained (50%), check the hori­zontal axis of Graph 1 (“severity index”), for the corresponding value of
“manoeuvre cycles” which our product can complete in its lifetime =
approx. 55,000 cycles.

GRAPH 1

Severity index (%)

Manouvre cycles

Ambient temperature over 40°C or
lower than 0°C or humidity greater
than 80%

Solid leaf

Installation in windy zone

20%

15%

15%

TABLE 1

Severity index

1 - 1,5 m

1,5 - 2,2 m

> 100 kg
> 150 kg

10%
25%

10%
25%

Leaf length

Leaf weight

125.000

100.000

75.000

50.000

25.000

TABLE 2 – Technical specifications of electric cables

Connection Type of cable (minimum section values) Max. admissible length

A - Power line cable 3 x 1.5 mm2 30 m (note 1)

B - FLASH flashing light output cable 2 x 0.5 mm2 20 m

C - Radio aerial RG58 shielded cable type 20 m (less than 5 m recommended)

D - input/output ECSbus cable 2 x 0.5 mm2 20 m (note 2)

E - STOP input cable 2 x 0.5 mm2 20 m (note 2)

F - OPEN input cable 2 x 0.5 mm2 20 m (note 2)

G - Motor output M1 and M2 cable 3 x 1 mm2 10 m

Note 1 - If the power cable is longer than 30 m, a cable with a larger section is required (e.g. 3x2.5 mm

2

) and safety earthing is necessary in the

vicinity of the automation.
Note 2 - For cables of ECSbus and those of the STOP and OPEN inputs, a single cable with multiple internal wires may be used, to combine

several connections: for example, the STOP and OPEN inputs can be connected to the KS100 selector switch with a cable of 4 x 0.5 mm

2

.

CAUTION! – The cables used must be suited to the installation environment.; for example a cable type H03VV-F is recommended for
indoor environments, and a cable type H07RN-F for outdoor environments is recommended.

English

4 – English

––– STEP 4 –––

4.1 - PRELIMINARY CHECKS FOR INSTALLATION

4.1.1 - Establish the position of devices in the system

With reference to fig. 1 and 5, locate the approximate position for instal­lation of each device envisaged in the system. Fig. 1 shows a system
made using this product and other optional accessories in the Mhouse
range. These elements are positioned according to a typical standard
layout. The components are:

[a] - 1 CL2S control unit.
[b] - 1 FL100 flashing light with integrated aerial
[c] - 1 pair of PH100 photocells (one TX and one RX)
[d] - 1 KS100 key-operated selector switch
[e] - 2 photocell posts
[f] - 2 limit switch stops
[g] - 2 electromechanical gearmotors WS1SK

WARNING! - Some of these devices are optional and may not be
present in the kit (see Mhouse product catalogue).

Warnings:

• The gearmotor must be anchored to the ground, laterally to the gate
using the relative fixing plate.

• The fixed control devices must be positioned:

- in sight of the automation;

- far from moving parts;

- at a height of at least 1.5 m from the ground;

- not accessible by the public.

4.1.2 - Establish the position of all connection cables

Refer to the instructions in paragraph 4.2 to establish the layout of the
raceways for electric cable ducting.

4.1.3 - Ensure all equipment and materials for work are available

Before starting work, ensure that you have all equipment and materials
required to complete the work. Ensure that all items are in good condition
and comply with local safety standards.

4.1.4 - Completing the set-up work

Prepare the area for subsequent installation of the devices, completing all
preliminary work, such as:

- digging of raceways for protection ducting of electric cables (external

ducting may be used as an alternative);

- laying of protection ducting and embedding in concrete;

- sizing of all electric cables to required length (see paragraph 4.2) and

routing in protection ducting. Caution! - In this phase, do not make

any electrical connections.

Warnings:

• The hoses and ducting serve to protect electrical cables and prevent
accidental damage in the event of impact.

• When laying pipelines, take into account the risk of possible deposits of
water in the branch wells, where condensate may form in the pipelines
and the control unit with possible damage to the electronic circuits.

• Position the ends of the ducting at the points envisaged for fixture of
the various components.

4.2 - PREPARING ELECTRIC CABLES

To prepare all connection cables, proceed as follows:
a) - Refer to fig. 5 to check the connections of the various devices to the

control unit and terminals to be used for each connection. Important

- Only devices using “ECSbus” technology can be connected to the
terminal “ECSbus”.

b) - Refer to fig. 1 to check positions of the electrical cables in the area.

Then draw a similar diagram on paper, adapting it to specific require­ments of your system. Note - This diagram will be useful to establish

the route of the raceways for cable ducting, and to draw up a com­plete list of the cables required.

c) - Read Table 2 to determine the type of cables to be used; then refer

to the diagram drawn above and on-site measurements to determine
the length of each cable. Caution! - No cable must exceed the

specific maximum length stated in Table 2.

WARNING - “ECSbus” technology enables the interconnection of

devices using a single “bus” cable, with 2 internal electrical wires. Con­nection of several devices can be in the configuration “cascade”, “star”
or the latter two “combined”:

cascade star combined

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English – 5

A

D

G

B C D

D

E

F

a

d

g

d

e

f

b

b

c

1

3

4

5

A

B

C

E

H

F

I

2

L

G

D

English

6 – English

A

B

INSTALLATION: ASSEMBLY AND CONNECTION OF COMPONENTS

––– STEP 5 –––

WARNINGS

• Incorrect installation may cause serious physical injury to those
working on or using the system.

• Before starting automation assembly, make the preliminary checks
as described in STEP 3.

5.1 - INSTALLING THE GEARMOTOR WS1SC

01. Ensure that the fixing surface is perfectly smooth, level and sufficiently

compact. WS2S is not supplied with fixing devices, which must be
chosen also on the basis of the fixing surface material.

02. Prepare one or more duct tubes for routing the electric cables (fig. 6);

03. With reference to value “B” obtained from table 6, place the gearmo-

tor fixing plate no the fixing surface in the envisaged position, check­ing that at the positions in fig. 7- 8, at the point where the arm fixing
bracket is to be positioned, that there is a suitable surface;

04. Trace the drilling points using the plate as a reference, and drill the
surface to insert the 4 plugs of at least 8 mm (not supplied) Fix the
plate using suitable screws [A] and washers [B] fig. 9;

05. Ensure that the plate is perfectly level fig. 10. Otherwise an offset arm
could cause malfunctions of the automation fig. 11;

06. Prepare the gearmotor, inserting washer [D] in arm [C], then tighten
fixing screw [E]. Take care to place the arm towards the front section
fig. 12;

07. Fix the gearmotor to the plate by means of the screws [F] and lock
nuts [G] fig. 13;

08. Using the pins supplied [H] and relative safety rings [I] fix the curved
arm to the straight arm and leaf connecting bracket to the curved
arm fig. 14;

09. Turn the leaf to the “gate closed” position;

10. Manually release the gearmotor (see paragraph 11.3 – User’s guide)

and secure the leaf connecting bracket to the gate at the point fur­thest from the column, extending the arms to the maximum limit
(Fig.11);

11. Fix the bracket using screws suited to the leaf material;

12. Turn the leaf to the required “gate open” position. Place the limit

switch against the straight arm [L] and tighten the two screws [M] ful-
ly down fig. 15;

13.

Loosen screw [N] securing the straight arm to the gearmotor and

insert the protection cover [P] between the straight arm and washer
[O]. Refit the previously removed screw and tighten it fully down fig. 16;

14. Manually complete a number of leaf opening and closing cycles to
ensure that the rack slides smoothly along the pinion throughout the
entire length;

15. Manually unlock the gearmotor (see paragraph 11.3 - User’s guide);

16. Remove the top cover of the gearmotor and using a screwdriver push

the closure hook inside the release ring nut and pull the cover
upwards fig. 17;

17. Before closing the gearmotor cover, make the electrical connections.
Refer to fig. 18, in paragraph 5.2 and Step 6 (electrical connection of
accessories) 6.

18. To install gearmotor WS1SK, repeat the entire procedure described in
this paragraph (5.1)

Make electrical connections. Refer to figure 18 and step 6.

IMPORTANT!

- The following assembly phases show installation of a gearmotor mod­el WS1SK/WS1SC.

- To ensure correct system operation, mechanical stops must be
mounted on the floor or wall at the maximum leaf opening and closing
points. Note - These stops are not supplied in the pack and are not
part of the Mhouse product range.

6

7

8

9

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English – 7

NO

E

D

C

F

G

H

H

I

M

L

10

11

12

13

14

15

English

8 – English

N

O

P

Blue

Yellow/Green

Brown

WS1SC

M2

WS1SK

M1

KS100

PH100

FL100

Blue

Yellow/Green

Brown

B

A

16

17

18

ECSbus

M M FLASH STOP OPENMM

MM MM

OPENSTOP

TX TR

ECS

bus

ECS

bus

FLASH

English

English – 9

––– STEP 6 –––

6.1 - INSTALLING AND CONNECTING PH100

PHOTOCELLS (fig. 19)

Warning: all installation operations must be performed with the system
disconnected from the power supply; if fitted, the PR1 backup battery
must also be disconnected.

Warnings: Take care not to damage the o-ring fitted (fig. 19-3) [A].

Select the position of the two elements making up the photocell (TX and
RX) observing the following:

• Place them at a height of 40-60 cm from the ground, to the sides of the
zone to be protected, and as close as possible to the edge of the gate,
i.e. no further than 15 cm.

• There must be a raceway tube at the point envisaged for routing
cables.

• Point the transmitter TX at receiver RX with a maximum tolerance of 5°.

01. Remove the front glass panel (fig. 19-1).

02. Position the photocell at the point where the cable routing tube

arrives.

03. Trace the drilling points using the base as a reference. Use a percus-

sion drill to drill the wall, with a 5 mm tip, and insert 5 mm plugs.

04. Route the electric cables through the specific holes (pierce those

required): see fig. 19-2.

05. Fix the base, using the relative screws [B] of fig. 19-3 ensuring that

the hole on the base [C] of fig. 19-3 is aligned with the cable outlet.
2 self-tapping screws are also supplied for fixture on surfaces with a
different density.

06. Connect the electrical cable in the relative terminals of both TX and

RX (fig. 19-4).Connect the electrical cable in the relative terminals of
both TX and RX (fig. 19-5) and to the blue terminal on the control

board. No polarity needs to be observed.

07. Fix the covering shell [D] of fig. 19-6 with the two screws [E] of fig.
19-6 using a Phillips screwdriver. Lastly, insert the external cover [F]
in fig. 19-6 pressing it slightly to secure in place.

6.2 - INSTALLING AND CONNECTING THE FLASHING

LIGHT FL100 (fig. 20)

Select the position of the flashing light so that it is in the vicinity of the
gate in a visible location; It can be fixed on either a horizontal or vertical
surface. Fig. 20 shows the two options:

01. Remove the cover, unscrewing the screw if present;

02. Separate the base, unscrewing the screws present to route the elec-

tric cables;

03. Trace the drilling holes using the base as a reference and ensuring
that the hole on the base is aligned with the cable outlet. vertical fix­ture (A) or horizontal fixture (B);

04. Use a percussion drill to drill the wall, with a 6 mm tip, and insert 6
mm plugs.

05. Fix the base, using the relative screws;

06. Connect the electric cables in the relative FLASH and “aerial” termi-

nals as shown in the figure: To facilitate operations, remove termi­nals, make connections, then refit the terminals.
No polarity needs to be observed on the FLASH terminal, while in the
case of the shielded cable connection of the aerial, the sheath must
be connected;

07. Insert the lamp holder in the base, taking care to press it down so
that it locks into place.

08. Secure the body of the flashing light to the fixing support and turn it
left until it clicks into place, then secure by means of the screw.

12

3

4

5

19

6

B

C

A

D

E

F