Pfeiffer Vacuum ASI 35 Operating and maintenance instructions

MAINTENANCE INSTRUCTIONS
EN
Translation of the Original
ASI 35
Integrable industrial leak detector

Disclaimer of liability
These operating instructions describe all models and variants of your product. Note that your
product may not be equipped with all features described in this document. Pfeiffer Vacuum
constantly adapts its products to the latest state of the art without prior notice. Please take
into account that online operating instructions can deviate from the printed operating
instructions supplied with your product.
Furthermore, Pfeiffer Vacuum assumes no responsibility or liability for damage resulting from
the use of the product that contradicts its proper use or is explicitly defined as foreseeable
misuse.
Copyright
This document is the intellectual property of Pfeiffer Vacuum and all contents of this
document are protected by copyright. They may not be copied, altered, reproduced or
published without the prior written permission of Pfeiffer Vacuum.
We reserve the right to make changes to the technical data and information in this document.
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Table of contents
1 About this manual 4
1.1 Validity 4
1.1.1 Applicable documents 4
1.1.2 Products concerned 4
1.2 User target group 4
1.3 Conventions 4
1.3.1 Pictographs 4
1.3.2 Instructions in the text 5
1.3.3 Labels 5
1.3.4 Abbreviations 7
2 Safety 8
2.1 General safety information 8
2.2 Safety instructions 8
2.3 Precautions 10
3 General information 11
3.1 Spare parts 11
3.2 Preparatory work 11
4 Maintenance frequency and responsibilities 12
5 Service - Maintenance 14
5.1 Cleaning 14
5.2 Detector powering off 14
5.3 Accessing the electronic module components 14
5.4 Accessing the vacuum module components 15
5.5 Internal calibrated leak replacement 16
5.6 Analyzer cell maintenance 18
5.6.1 Analyzer cell disassembly/reassembly 18
5.6.2 Seal replacement 19
5.6.3 Filament replacement 19
5.7 Maintenance of the turbomolecular pump 21
5.7.1 Wheel replacement 21
5.7.2 Access to the turbomolecular pump operating fluid reservoir 21
5.7.3 Turbomolecular pump operating fluid reservoir replacement 22
5.8 Fan maintenance 25
5.8.1 Replacing the fan of the vacuum module 25
5.8.2 Replacing the fan of the electronic module 26
5.9 Electronic module air filter replacement 27
5.10 Flow reducer replacement 27
6 Decommissioning 29
6.1 Shutting down for longer periods 29
6.2 Disposal 29
6.2.1 Restriction of Hazardous Substances (RoHS) 29
6.2.2 Electrical and Electronic Equipment (EEE) 29
7 Malfunctions 31
7.1 Operation monitoring 31
7.2 Fault display 31
8 Service solutions by Pfeiffer Vacuum 32
9 Spare parts 34
9.1 Tools 34
9.2 Leak detector spare parts 35
Table of contents
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1 About this manual
IMPORTANT
Read carefully before use.
Keep the manual for future consultation.
1.1 Validity
This maintenance manual is intended for customers of Pfeiffer Vacuum. It describes the maintenance
procedures that the customer can perform on the respective product. This document has to be used
in conjunction with the operating instructions of the product with the same name.
1.1.1 Applicable documents
Document Part Number
ASI 35 Operating instructions 127801*
* also available at www.pfeiffer-vacuum.com
1.1.2 Products concerned
This document applies to products with the following part numbers:
Part Number Description
Sxxx0x0xMM9A ASI 35 (all models)
1.2 User target group
This maintenance manual is intended for all persons responsible for product maintenance, for the fol-
lowing operations:
●disassembly
●maintenance
●cleaning
The work described in this document must only be carried out by persons with suitable technical train-
ing (e.g. maintenance technicians) and have completed the necessary training as provided by Pfeiff-
er Vacuum.
1.3 Conventions
1.3.1 Pictographs
Pictographs used in the document indicate useful information.
Note
Tip
Key point on the illustration to be checked
Stated tightening torque to be applied
1 2 3
12
Respect the chronological order of operations and/or assembly/disassembly direction
About this manual
4/40

1.3.2 Instructions in the text
Usage instructions in the document follow a general structure that is complete in itself. The required ac-
tion is indicated by an individual step or multi-part action steps.
Individual action step
A horizontal, solid triangle indicates the only step in an action.
►This is an individual action step.
Sequence of multi-part action steps
The numerical list indicates an action with multiple necessary steps.
1. Step 1
2. Step 2
3. ...
1.3.3 Labels
INPUTS/OUTPUTS Inputs/Outputs communication interface connector
SERIAL 9-pin D-Sub RS-232 serial link connector
NETWORK Ethernet plug
USB USB plug
MAIN POWER Power supply
CONTROL PANEL Control panel
PRESSURE Pressure
VACUUM BLOCK Vacuum block
ACCESSORIES Accessories
HIGH SENS High Sensitivity mode
NORMAL Normal mode
GROSS Gross Leak mode
FOREPUMP Roughing pump
90/240V 50-60Hz Max 300W Operating voltage - Use frequency - Maximum power consumption
6 45 12 13 12
1 2 3 9 1110 14 15
7 8
Packaging
-
FR AEOF 00165062 - assurance qualité / quality control
This label guarantees to the user that the product packaging has not been opened
since leaving the factory.
About this manual
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Electronic module
1
Pu_GL : 1 Pu_N : 1
Mu_GL : 12856 Mu_N : 31
Mu_Cal : 1 Mu_LDS : 1800
(Example)
For service centers use only
2
Factory Firmware /Logiciel usine
L0232 V3302 E17D
L0264 V3200 FD87E7D
L0285 V3200 8C9D
DD-MM-YY
12 3
4
(Example)
This label provides information regarding firmware installed in the product.
1 Firmware name 3 Firmware checksum
2 Firmware version 4 Publication date
3
PRODUIT PERSONNALISE
CUSTOMIZED PRODUCT
This label indicates that the product has been customized at the customer’s
request.
4 This label indicates that the product is subject to regulations for the treatment
of electrical and electronic equipment waste (refer to the EC declaration of
conformity for the product).
5
HLD1302577 - RS232
Bluetooth MAC address
XXXXXX / None
Network MAC address
xx:xx:xx:xx:xx:xx / None
(Example)
This label indicates the MAC address for the options installed in the product.
6 - Electronic module rating plate
S/N ACxxxxxx
7DO NOT OPERATE WITH UN-
GROUND POWER CABLE
This label indicates that some of the internal parts are electrically live and
could cause electrical shock in case of contact.
● Do not use the product if the main power supply cable is not earthed.
8DISCONNECT BEFORE MAINTE-
NANCE
This label indicates that some of the internal parts are electrically live and
could cause electrical shock in case of contact.
● Disconnect the main power supply cable (product side and customer in-
stallation side) from the product before servicing the product.
Vacuum module
9 - Vacuum module rating plate
S/N SBxxxxxx
10
warranty seal
This label indicates that the pump body has been sealed at the factory.
Any damage to or tearing of the label shall void the warranty.
● Do not open the product during the warranty period.
● If applications require service intervals shorter than the warranty period,
contact customer service.
11 - Analyzer cell rating plate
S/N SBxxxxxx
12 This label indicates the grounding point on the product.
13
1 2
5 6
7
3 4
98 avenue de Brogny F-74000 ANNECY
Kg
P/N :
S/N :
V Hz W
8
Made in France
Product rating plate.
S/N HLDxxxxxx
This rating plate can be consulted on the detection module (2 labels: 1 on the
connection port side and 1 on the module frame.
1 Weight 5 Part Number
2 Use voltage 6 Designation
3 Use frequency 7 Serial number
4 Maximum power consumption 8 Date of manufacture
About this manual
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14
TO BE REMOVED BEFORE
USE OF LEAK DETECTOR
TO BE KEPT FOR MAINTENANCE
This label indicates that the blanking plate fitted on the manual valve must be
removed before using the leak detector. Keep for maintenance or storage
15 This label indicates that the product has been certified compliant with quality
control upon leaving the factory.
1.3.4 Abbreviations
I/O Input/Output
4He Helium 4
3He Helium 3
H2Hydrogen
[XXXXXX] Control panel menus and settings
e.g. [Measure] [Tracer Gas] to select the tracer gas used for the test.
About this manual
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2 Safety
2.1 General safety information
The following 4 risk levels and 1 information level are taken into account in this document.
DANGER
Immediately pending danger
Indicates an immediately pending danger that will result in death or serious injury if not observed.
►Instructions to avoid the danger situation
WARNING
Potential pending danger
Indicates a pending danger that could result in death or serious injury if not observed.
►Instructions to avoid the danger situation
CAUTION
Potential pending danger
Indicates a pending danger that could result in minor injuries if not observed.
►Instructions to avoid the danger situation
NOTICE
Danger of damage to property
Is used to highlight actions that are not associated with personal injury.
►Instructions to avoid damage to property
Notes, tips or examples indicate important information about the product or about this docu-
ment.
2.2 Safety instructions
All safety instructions in this document are based on the results of the risk assessment carried out in
accordance with Low-Voltage Directive 2014/35/EU regarding electrical safety. Where applicable, all life
cycle phases of the product were taken into account.
WARNING
Risk of electric shock due to non-compliant electrical installations
This product uses mains voltage for its electrical supply. Non-compliant electrical installations or in-
stallations not done to professional standards may endanger the user’s life.
►Only qualified technicians trained in the relevant electrical safety and EMC regulations are au-
thorized to work on the electrical installation.
►This product must not be modified or converted arbitrarily.
WARNING
Danger from magnetic fields
The product has a magnetic field that disturbs or impairs the function of electronic devices (e.g. pace-
makers).
►Maintain the distances specified by the manufacturer of the pacemakers.
–Pfeiffer Vacuum recommends a safety distance of at least 130 mm between the pacemaker
and the product.
►Avoid the influence of strong magnetic fields by means of magnetic field shielding.
Safety
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WARNING
Electric shock hazard
Voltage and current can cause electric shock.
Only skilled, authorized people may carry out maintenance work.
►Insulate and lock the power supply circuit by setting the switch to O.
►Disconnect the power supply cable from all power sources before working on the product and/or
removing the covers.
WARNING
Risk of electric shock in case of contact with products that are not electrically isolated
When powering off _mains switch to O_, certain components located between the mains connection
and the switch will still contain an electric charge (live). There is a risk of electric shock in case of
contact.
►Make sure that the mains connection is always visible and accessible so that it can be unplugged
at any time.
►Disconnect the mains cable from the electrical network before working on the product.
►Wait 5 minutes after power-off before working on the product and/or removing the cover(s).
WARNING
Health risk related to residual traces on the parts tested
A leak detection operation must be carried out under environmental conditions that do not present
any risks to the operator and the equipment. The user and/or integrator of the product are fully re-
sponsible for the operational safety conditions of the equipment.
►Do not test parts or equipment with traces of harsh, chemical, corrosive, inflammable, reactive,
toxic, or explosive substances, nor condensable vapors, even in small amounts.
►Apply the relevant safety instructions in accordance with local regulations.
WARNING
Risk of serious injury due to falling objects
When transporting parts/components and during product maintenance, there is a danger of injury
caused by loads slipping or falling.
►Carry small and medium-size components with both hands.
►Transport components that weigh more than 20 kg using suitable lifting gear.
►Wear safety shoes with steel toes in accordance with directive EN 347.
WARNING
Risk of burns in case of contact with hot surfaces
For the operator’s safety, the products are designed to avoid thermal risk. However, specific operat-
ing conditions may exist that require extra caution on the part of the operator due to the high temper-
atures (surfaces > 70 °C for parts inside the cover(s)).
►Wait for the product to fully cool down before working on it.
►Protective gloves must be worn in accordance with standard EN ISO 21420.
WARNING
Risk of injury from contact with pressurized neutral gas
The product uses a pressurized inert gas (e.g. nitrogen) as the purge gas. Installations that do not
comply with or are not configured according to professional standards can endanger the user's life.
►Install a manual valve on the circuit at a distance of 3 m from the product, so that the neutral gas
supply can be locked out.
►Observe the recommended supply pressure.
►Always lock out and disconnect the neutral gas circuit before working on the product.
►Regularly check the condition of the pipework and supply circuit connections.
Safety
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2.3 Precautions
Duty to provide information on potential dangers
The product holder or user is obliged to make all operating personnel aware of dangers
posed by this product.
Every person who is involved in the installation, operation or maintenance of the product
must read, understand and adhere to the safety-related parts of this document.
Obligation to provide personal protective equipment
The operators or employers are obliged to provide the user of the product with the neces-
sary personal protective equipment (PPE).
Persons responsible for installing, operating and repairing the product must wear PPE for
safety.
Infringement of conformity due to modifications to the product
The Declaration of Conformity from the manufacturer is no longer valid if the operator
changes the original product or installs additional equipment.
●Following the installation into a system, the operator is required to check and re-evalu-
ate the conformity of the overall system in the context of the relevant European Direc-
tives, before commissioning that system.
Installation and use of the accessories
The products can be fitted with special accessories.
The installation, use and refurbishment of the connected accessories are described in de-
tail in the respective operating instructions.
●Only use original accessories.
●Accessory part numbers (see chapter “Accessories”).
Only qualified personnel trained in safety regulations (EMC, electrical safety, chemical pollution) are au-
thorized to carry out the installation and maintenance described in this manual. Our service centers can
provide the necessary training.
►Do not remove the blanked-off flange from the inlet port while the product is not in use.
►Do not expose any part of the human body to the vacuum.
►Follow the safety and accident prevention requirements.
►Regularly check compliance with all precautionary measurements.
►Do not turn on the product if the cover is not in place.
►Do not move the product while it is in use (product powered on).
Safety
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3 General information
3.1 Spare parts
Replacement of defective parts
The initial safety conditions of the product call into question if non-original parts are used.
●Use only spare parts available for order from Pfeiffer Vacuum Service (see chap-
ter “Spare parts”, page 34).
●To identify the product and communicate with Pfeiffer Vacuum look at the product's rat-
ing plate.
3.2 Preparatory work
The detector does not require any maintenance at the customer’s premises, except for the sub-assem-
bly maintenance described in this manual. All other maintenance must be carried out by our service
center (see chapter “Service solutions by Pfeiffer Vacuum”, page 32).
WARNING
Risk of electric shock in case of contact with products that are not electrically isolated
When powering off _mains switch to O_, certain components located between the mains connection
and the switch will still contain an electric charge (live). There is a risk of electric shock in case of
contact.
►Make sure that the mains connection is always visible and accessible so that it can be unplugged
at any time.
►Disconnect the mains cable from the electrical network before working on the product.
►Wait 5 minutes after power-off before working on the product and/or removing the cover(s).
Procedure
To ensure the proper operation of the detector after on-site maintenance, follow the recommendations
provided below:
►Handle the detector so it can be moved in the maintenance area (see chapter “Handling” of the
Operating Instructions.)
–Clean, dust-free room.
►Wear suitable protective equipment.
►Use the recommended tools for each maintenance operation.
–If necessary, a maintenance set is available to order (see chapter “Tools”).
►Always protect the surfaces of connecting flanges (analyzer cell, pumps and pipework).
►After reassembly, perform a leak test on the replaced sub-assembly.
General information
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4 Maintenance frequency and responsibilities
Maintenance level 1 and 2 operations are described in this manual.
Level 3 maintenance operations require a technician from the Pfeiffer Vacuum Service network.
Operation Number of hours in use Level 1) Site 2)
Primary pump
Adhere to the maintenance intervals for the pri-
mary pump connected to the detector.
- - -
SplitFlow 50 turbomolecular pump
Operating fluid reservoir replacement 4 years or 17,200 hours 2 OS
Bearings replacement 4 years or 17,200 hours 3 OS
TC 110 electronic unit replacement As needed 3 OS
Pump replacement As needed 3 OS
Analyzer cell
Seal replacement As needed 2 OS
Filament replacement As needed 2 OS
Extraction electrode replacement As needed 3 OS
Overhaul of analyzer cell As needed 3 OS
Solenoid valves
Internal calibration module solenoid valve replace-
ment 3)
500,000 tests or 4 years 3 OS
Sniffer module valve replacement 4) 500,000 tests or 4 years 3 OS
Air filter
Inlet vent filter cleaning or replacement According to conditions of use 2 OS
Flow reducer replacement As needed 1 OS
Smart sniffer probe 4)
Capillary filter replacement According to conditions of use
160 hours in case of harsh usage (with signifi-
cant flow or contamination)
1 OS
Sintered filter replacement According to conditions of use
160 hours in case of harsh usage (with signifi-
cant flow or contamination)
1 OS
Standard sniffer probe 4)
Sintered filter replacement According to conditions of use
160 hours in case of harsh usage (with signifi-
cant flow or contamination)
1 OS
Fan
Replacing the fan of the electronic module As needed 1 OS
Detection module fan replacement As needed 1 OS
Calibrated leak 3)
Recalibration Every 2 years (recommended) 2 WS
Leak detector
Overhaul of the detector According to conditions of use
Every 4 years (recommended)
3 OS/WS
1) Maintenance level
● 1: Operator
● 2: Technician with Pfeiffer Vacuum training
● 3: Pfeiffer Vacuum maintenance technician
2) Maintenance site
● OS: on customer site
● WS: Pfeiffer Vacuum service center
3) ‘Internal Calibration’ option/accessory
4) Sniffer module option/accessory
Maintenance time monitoring
The molecular pump maintenance counter alerts the operator that a maintenance operation must be
performed (see chapter “Counters” in the operating instructions).
Maintenance frequency and responsibilities
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How to contact us
Product overhauls must be carried out by personnel with manufacturer training. Contact our
nearest service center at the following e-mail address: support.service@pfeiffer-vac-
uum.com.
Maintenance frequency and responsibilities
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5 Service - Maintenance
5.1 Cleaning
►Clean the cover(s) with a soft, lint-free cloth and a product that will not damage the paint, painted
surfaces or the labels.
5.2 Detector powering off
2
3
1
o
►Wait 5 minutes before working on the detector, removing the cover, or moving the detector.
Pump stop due to power failure
When there is a mains power failure, the detector shuts down: it switches on again automatically when
power is restored.
5.3 Accessing the electronic module components
Prerequisites
►Power off the leak detector (see chapter “Powering Off”).
►Disconnect the cables which link the electronic module to the control panel and the vacuum mod-
ule.
►Remove the electronic module from the customer’s installation.
Procedure
Set the module on a flat surface (clean workbench in a dust-free place).
Service - Maintenance
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5.4 Accessing the vacuum module components
Prerequisites
►Power off the leak detector (see chapter “Powering Off”).
►Disconnect the cables which link the vacuum module to the control panel and the electronic mod-
ule.
►Remove the vacuum module from the installation.
Set the module on a flat surface (clean workbench in a dust-free place).
Setting the vacuum module to the 'Maintenance' position
It is sometimes necessary, to be able to access the inside of the vacuum module, to put the module into
the ‘Maintenance’ position (tip up the upper part of the module).
Service - Maintenance
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1
1
1
1
2
4
3
3
4
90°
2
22
1 1 1 1
1
(2) Carefully unscrew the screws without removing them.
(4) The fixing screw keeps the upper part raised.
1 Fixing screw and washer 2 Fixing screws
►After any maintenance procedure which has required putting the module in the ‘Maintenance’ po-
sition, never leave the module in this position. The module must always be folded down when the
detector is in use.
►Follow the steps in reverse order.
5.5 Internal calibrated leak replacement
Calibration is offered as an option and as an accessory for this detector.
Checking the condition of the internal calibrated leak
Change the internal calibrated leak if it has significant impact marks: it must be replaced.
Recalibration of a calibrated leak with tank
To guarantee the reliability of the test, we recommend that you regularly recalibrate (2
years recommended) every calibrated leak with tank to check its leak rate: this applies to
both internal and external calibrated leaks.
Return the calibrated leak for recalibration to the manufacturer’s service center.
In the case of intensive use of the detector, a spare internal calibrated leak is recommended. If this is
not possible, the detector can still be used and calibrated using an external calibrated leak (see chapter
“Calibration” in the Operating Instructions).
Prerequisite
1. Put the module in the 'Maintenance' position (see chapter “Access to the components of the vac-
uum module”).
Service - Maintenance
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Calibrated leak disassembly
1
3
2
1
1
3
3
1
2
2
90°
(1) Carefully unscrew the screws without removing them.
(3) Never separate the temperature sensor from the calibrated leak.
Calibrated leak reassembly
1. Follow the disassembly steps in reverse.
2. Update the parameters of the calibrated leak (see chapter “Calibrated leak” in the operating in-
structions).
This operation can be carried out with the information featured on the calibrated leak rating plate
or the calibrated leak certificate supplied with the leak.
F-74000 ANNECY
S/N:FC15000123
P/N:119678
Calibration date...: 15-Jan-2015
Lost per year........: 2 %
Temperature........: 23°C
Temperature coeff: 3 %
Value..: 1,3E-7 mbar.l/s ± 10 %
1,3E-8 Pa.m3/s ± 10 %
HELIUM CALIBRATED LEAK
Example of calibrated leak rating plate
●If the type = ‘internal’ is set for the calibrated leak, the internal calibrated leak parameters are
displayed in the menu.
●If the type = ‘external’ is set for the calibrated leak, the external calibrated leak parameters
(installed on the vacuum module or on the customer installation) are displayed in the menu.
●If the type = ‘machine’ is set for the calibrated leak, the external calibrated leak parameters
(installed on the customer installation, never on the vacuum module) are displayed in the
menu.
3. Perform a calibration on the detector.
Tightness test after calibrated leak maintenance
1. Open the calibration solenoid valve to carry out the test.
2. Press the [ZERO] function key.
3. Spray a light flow of Helium 4 around the calibrated leak.
–Leak rate measured < 1 · 10-8 mbar·l/s (1 · 10-9 Pa·m3/s) after 3 seconds.
Service - Maintenance
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5.6 Analyzer cell maintenance
Pollution of vacuum circuit components
During maintenance operations for vacuum circuit components, avoid any contamination
which could subsequently result in the degassing of the parts. Special caution must be ex-
ercised to ensure cleanliness. To avoid this:
●Perform the maintenance in an appropriate area (clean, dust-free and ventilated).
●Use non-woven materials.
●Dust the parts with filtered dry air (unless otherwise stated).
●Wear unpowdered vinyl gloves (clean room gloves).
5.6.1 Analyzer cell disassembly/reassembly
WARNING
Risk of burns in case of contact with hot surfaces
For the operator’s safety, the products are designed to avoid thermal risk. However, specific operat-
ing conditions may exist that require extra caution on the part of the operator due to the high temper-
atures (surfaces > 70 °C for parts inside the cover(s)).
►Wait for the product to fully cool down before working on it.
►Protective gloves must be worn in accordance with standard EN ISO 21420.
Prerequisite
1. Put the module in the 'Maintenance' position (see chapter “Access to the components of the vac-
uum module”).
Analyzer cell disassembly
4
3
2
13
1
25
1
4
5
The analyzer cell must be unobstructed horizontally.
1 Deflector 3 Analyzer cell
2 Fixing screws 4 Analyzer cell connector
Analyzer cell reassembly
3 4 5
1
2
4
3
1
2
5
5
1
4 N·m
1 5 3
4 6 2
2
5
The analyzer cell must be repositioned horizontally.
Service - Maintenance
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1 Deflector 4 Analyzer cell
2 Fixing screw and washer 5 Fixing screws
3 Analyzer cell connector
Distortion of the measurement results with non-compliant analyzer cell
When it leaves the factory, the analyzer cell is set for the product in which it is installed.
The use of an analyzer cell different from the original component requires settings. Without
these settings, the measurements made by the product are not correct. Only a Pfeiffer Vac-
uum service center can make these settings.
Tightness test after analyzer cell reassembly
►Press the [ZERO] function key.
►Spray a light flow of Helium 4 around the analyzer cell.
–Leak rate measured < 3 · 10-9 mbar·l/s (3 · 10-10 Pa·m3/s) after 3 seconds.
5.6.2 Seal replacement
1
1 Seals
1. Remove the detector analyzer cell (see chapter “Disassembly/reassembly of the analyzer cell”).
2. Check the condition of the seals: change them if necessary.
3. Replace the 2 seals. Never lubricate the seals.
5.6.3 Filament replacement
NOTICE
Distortion of product performance due to damaged filament
The new filament has a white deposit on the surface.
With use, the white deposit oxidizes and turns black: this is normal.
Any contact with the filament may damage it.
►Keep the filament in its protective box when it is not installed in the analyzer cell.
►Do not touch the filament with your fingers (even with gloves) or any other object.
►Do not clean the new or used filament with cloth or fingers.
►Do not dust the filament with pressurized air or by blowing on it.
Service - Maintenance
19/40

Disassembly
F2 F1 1
A
A
F1
2
F1 Filament 1 1 Fixing screw and washer
F2 Filament 2 2 Fastening clips
1. Remove the detector analyzer cell (see chapter “Disassembly/reassembly of the analyzer cell”).
2. Remove the fixing screw and washer of the defective filament.
3. Remove the 2 fastening clips using flat pliers (2 new clips are supplied with the spare filament).
Reassembly
3
F1
2
1
4
1
F1 Filament 1 3 Connectors
1 Fixing screw and washer 4 Centering stops
2 Filament strip
The connectors are perpendicular to the supporting surface and parallel to each other.
25 3
4
1. Place the new filament on its housing against both centering stops. Fix it with the screw and
washer provided with the filament.
2. Fit the fastening clips on the connectors on each side of the filament.
Service - Maintenance
20/40