Pfeiffer Vacuum ASI 35 Technical specifications

MAINTENANCE INSTRUCTIONS
EN
Translation of the original instructions
ASI 35
Modular leak detector

Table of contents
2
Table of contents
1 About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Validity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1.1 Applicable documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2.1 Safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2.2 Pictographs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.3 Instructions/Abbreviations used . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.4 Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Safety and maintenance information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Protective equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Maintenance preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Tools and spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Maintenance intervals and responsibilities . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Maintenance time monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Maintenance replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Access to electrical cabinet components . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1.1 Tools set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1.2 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Access to the components of the detection module . . . . . . . . . . . . . . . . . 10
4.2.1 Tools set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2.2 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3 Maintenance of the internal calibrated leak . . . . . . . . . . . . . . . . . . . . . . . 11
4.3.1 Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.3.2 Recalibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3.3 Setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4 Analyzer cell maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.4.1 Dismantling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.4.2 Seals replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.4.3 Filament replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4. Maintenance of the turbomolecular pump. . . . . . . . . . . . . . . . . . . . . . . . . 16
4. .1 Wheel replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4. .2 Access to the fluid reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4. .3 Replacing the operating fluid reservoir . . . . . . . . . . . . . . . . . . . . . 17
4.6 Maintenance fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.6.1 Replacement of electrical cabinet fan . . . . . . . . . . . . . . . . . . . . . . 18
4.6.2 Replacement of detection module fan. . . . . . . . . . . . . . . . . . . . . . 19
4.7 Air filter maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.7.1 Air filter replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.8 Maintenance of the sniffer module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.8.1 Replacement of flow reducer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5 Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.1 Shutting down for longer periods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2.1 Restriction of Hazardous Substances (R.O.H.S.) . . . . . . . . . . . . . 23
6.2.2 Electric and electronic equipments (EEE). . . . . . . . . . . . . . . . . . . 23
7 Malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.1 What happens in the event of a defect . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
7.1.1 Warning fault display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
7.1.2 Warning / fault window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
7.1.3 List of warnings / faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
7.2 Troubleshooting guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.2.1 Installation of the application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.2.2 Consultation of the application . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table of contents
3
9.1 Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.2 Monitoring and display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9.3 Power and electrical supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9.4 Automatic control system and electronic circuits . . . . . . . . . . . . . . . . . . . 32
9. Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.6 Pumping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.7 Vacuum block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
9.8 Pipes - Connections - Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
9.9 Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.10 Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

4
About this manual
1 About this manual
1.1 Validity
This maintenance manual is intended for the customers of the Pfeiffer Vacuum Compa-
ny. It describes the product maintenance operations which can be performed by the user
on the product concerned. This documentation must be used with the operating
manual of the product of the same name.
The current maintenance manuals are also available on the Internet at www.pfeiffer-vac-
uum.com.
This manual covers products with the following part numbers:
1.1.1 Applicable documents
The document to be used in reference to this maintenance manual is:
*also available at www.pfeiffer-vacuum.com
1.2 Conventions
1.2.1 Safety instructions
Operating manual safety instructions Pfeiffer Vacuum are based on the UL, CSA, ANSI
Z- 3 , SEMI S2, ISO 3864 and DIN 4844 certification standards. This document de-
scribes the following information and danger levels:
Part number Description
Sxxx0x0xMM9A ASI 3 (all models)
ASI 35 Operating instructions
ASI 3 Leak Detector P/n 1233 6*
DANGER
Imminent danger
Indicates an imminent hazardous situation that will result in death or serious injury.
WARNING
Possibly imminent danger
Indicates an imminent hazardous situation that can result in death or serious injury.
CAUTION
Possibly imminent danger
Indicates an imminent hazardous situation that can result in minor or moderate injury.
NOTICE
Command or note
Command to perform an action or information about properties, the disregarding of
which may result in damage to the product.

About this manual
1.2.2 Pictographs
1.2.3 Instructions Abbreviations used
1.2.4 Labels
Prohibition of an action to avoid any risk of accidents, the disregarding
of which may result in serious accidents
Warning of a displayed source of danger in connection with operation of
the unit or equipment
Command to perform an action or task associated with a source of dan-
ger, the disregarding of which may result in serious accidents
Important information about the product or this document
 or Work instruction: you must perform an operation here.
[XXXX] You must press the XXXX key on the control panel.
I/O Inputs/Outputs
4
He Helium 4
3
He Helium 3
H
2
Hydrogen
DISCONNECT BEFORE MAINTENANCE Indicates an electrical shock hazard in case of contact:
disconnect the power supply (on the product and cus-
tomer installation sides) before carrying out any work on
the product.
Indicates that the blanking flange fitted with the valve must
be removed before using the leak detector.
Retain for maintenance or storage
Locate a grounding point on the product.
DO NOT OPERATE WITH UNDER-
GROUNDED POWER CORD
Indicates an electrical shock hazard in case of contact:
do not use the product if the power cable is not earthed.
SplitFlow pump: Closure seal
The product is sealed at the factory. Damaging or removal
of a closure seal leads to the loss of liability and warranty
entitlements.
Do not open the product within its warranty period.
For process-related shorter maintenance intervals
please contact the Service.
Other labels: see Operating Instructions.
TO BE REMOVED BEFORE
USE OF LEAK DETECTOR
TO BE KEPT FOR MAINTENANCE
warranty seal

6
Safety and maintenance information
2 Safety and maintenance information
2.1 Safety precautions
Duty to inform
Every person who is involved in maintenance and servicing work on the pump must read
and follow the safety-relevant parts of all associated documents.
Availability obligation
Any person tasked with the installation, use or maintenance of the product must be able
to consult the product's operating instructions and maintenance manual.
It is the responsibility of the operator to provide these manuals at the point of use of
the product.
NOTICE
Exclusion of liability
Pfeiffer Vacuum accepts no responsibility concerning equipment damage, disrupted
service or physical injury resulting from maintenance carried out by technicians who
have not been trained in safety rules (EMC, electrical hazards, chemical pollution). Lia-
bility and warranty claims shall be inadmissible in this case.
DANGER
Hazard linked to magnetic fields
Powerful magnetic fields may disturb or interfere with the operation of electronic prod-
ucts, e.g. cardiac pacemakers.
Keep a safety distance of at least 10 cm between the pacemaker and the magnet or
avoid any disturbance from powerful magnetic fields by installing suitable shielding.
WARNING
Electric shock in case of contact
When the product's circuit breaker is set at O, some internal components still have an
electrical charge.
Always ensure that the mains connection is visible and accessible so that it can be
disconnected at any time.
Disconnect the power cable at both ends from all power sources before starting any
work on the product.
WARNING
Other localized hazardous energies
Electrical circuit and other pressurized circuits as nitrogen are potential hazards:
Always lock out these energy sources before working on the product.
NOTICE
Work Handling the detector
The operator must not work on the product to move it or carry out maintenance until it
has come to a complete shutdown! When the circuit breaker is set at O, you must:
Unplug the power cable.
Wait for the control panel screen to turn off completely before working on the product
and/or removing the covers.

Safety and maintenance information
7
● Wait minutes after switch-off before working on the product.
● When you order spare parts, you must mention everything featured on the product
nameplate.
● Comply with all safety and risk prevention instructions in accordance with local safety
standards.
● Regularly check compliance with all precautionary measures.
● Do not switch on the product if the covers are not in place.
● To return the product to one of our Pfeiffer Vacuum service centers, read the after-
sales Service procedure and complete the declaration of contamination available on
our website.
● Use the original packaging to return the product to a Pfeiffer Vacuum service center:
the manufacturer shall not be held liable for any damage resulting from transport in
unsuitable packaging.
2.2 Protective equipment
In some situations, personal protective equipment must be worn when handling the de-
tector and its components. Customers must provide operators with the necessary equip-
ment. This equipment must be checked regularly and used in accordance with the sup-
plier's recommendations.
2.3 Maintenance preparation
WARNING
Risk linked to installation tightness
The products are factory tested to ensure they will not leak in normal operating condi-
tions.
Perform a tightness test after all maintenance operations.
kg
WARNING
Risk of injury due to falling objects
When transporting parts/components and during maintenance there is a danger of loads
slipping and falling down.
Carry small and medium-size parts/components with both hands.
Carry parts/components > 20 kg with a suitable lifting device.
Wear safety shoes with a steel toe in accordance with directive EN 347.
WARNING
Risk of injury through hot surfaces
The products are designed so as not to present a thermal risk for the operator's safety.
However, specific operating conditions may exist that require extra caution from users
due to the high temperatures (surfaces > 70 °C for parts inside the covers).
Leave the part to cool before working on the product.
If necessary wear protective gloves according to directive EN 420.
NOTICE
Work Handling the detector
The operator must not work on the product to move it or carry out maintenance until it
has come to a complete shutdown! When the circuit breaker is set at O, you must:
Disconnect the mains cable at both ends.
Wait minutes starting to work on the product.

8
Safety and maintenance information
Disconnect the detector from the part/installation to be tested: install the blanked-off
flange on the detector's inlet (accessory supplied with the product or available upon
request (see Accessories chapter of the Operating instructions).
Handle the detector so it can be moved in the maintenance area (see Handling chap-
ter of the Operating instructions).
● clean, dust-free and ventilated room,
● appropriate protective equipment.
2.4 Tools and spare parts
The tools necessary for the maintenance of the detector are available in the maintenance
kit supplied with the product. Depending on the maintenance operation, other tools may
be needed, at the customer’s expense.
Spare parts
Replacing defective components with parts that are not genuine jeopardizes the prod-
uct's initial safety conditions.
Use only spare parts available for order from Pfeiffer Vacuum Service.
Parts numbers are available in the Spare Parts chapter.
To identify the product and communicate with Pfeiffer Vacuum look at the product's
nameplate.

Maintenance intervals and responsibilities
9
3 Maintenance intervals and responsibilities
Maintenance work at levels 1 and 2 on the service frequency table are described in this
manual.
Level 3 overhaul operations require the intervention of a technician from the Service net-
work Pfeiffer Vacuum.
3.1 Maintenance time monitoring
The molecular pump counter alerts the operator that a maintenance operation must be
performed (see Maintenance Menu of the Operating instructions).
Component Number of hours in use Level
(4)
Site
(5)
Operation Routine
maintenance
(3)
8,600 17,000 Others
Primary pump
Adhere to the maintenance intervals for the primary pump
connected to the detector.
SplitFlow 50 turbomolecular pump
Oil reservoir replacement x or 4 years II OS
Bearings replacement x or 4 years III OS
Replacement of the TC 110 frequency converter In case of failure III OS
Pump replacement In case of failure III OS
Analyzer cell
Filament replacement In case of failure I OS
Replacement of the extraction electrode In case of failure III OS
Valves
Replace the valves on the internal calibration module
(7)
Every 00,000 tests III OS
Replace the valves on the sniffer module
(6)
Every 00,000 tests III OS
Air filter
Cleaning and replacement of the inlet vent filter x I OS
Flow reducer
(6)
Replacement of the flow reducer In case of failure I OS
Smart Sniffer Probe
(6)
Capillary filter replacement x
(2)
I OS
Sintered filter replacement x
(2)
I OS
Standard Sniffer Probe
(6)
Sintered filter replacement x
(2)
I OS
Fan
Replacement of electrical cabinet fan In case of failure I OS
Replacement of the detection module fan In case of failure I OS
Calibrated leak
(7)
Recalibration Every 2 years II WS
Leak detector
Service x Every 4 years
(recommended)
III OS/WS
(1) In case of harsh usage (with significant
flow or potential contamination)
(2) 160 h in case of harsh usage (with signifi-
cant flow or contamination)
(3) Routine maintenance: according to usage
conditions
(4) Level:
I = Operator
II = Technical or trained operator
III = Service centre
( ) Site:
OS = On site
WS = In service centre Pfeiffer Vacuum.
(6) Sniffer option/accessory
(7) Internal calibration option/accessory

10
Maintenance / replacement
4 Maintenance replacement
4.1 Access to electrical cabinet components
For all maintenance operation on the electrical cabinet, you are advised to remove it from
the customer's installation.
4.1.1 Tools set
● Torx
®
screwdriver supplied in the maintenance kit
4.1.2 Procedure
Shut down the detector (Position the circuit breaker on O, control panel switched
off and mains power cable disconnected).
Disconnect the cables which link the electrical cabinet to the control panel and the de-
tection module.
Remove the electrical cabinet from the customer's installation and place it on a flat
surface (clean workbench in a dust-free location).
Remove the 4 fastening screws from the cover and lay the cover flat.
Follow these steps in the reverse order to put the electrical cabinet back into the custom-
er's installation.
4.2 Access to the components of the detection module
For all maintenance work on the detection module, you are advised to remove it from the
customer's installation.
4.2.1 Tools set
● 4 mm Allen key supplied in the maintenance kit
4.2.2 Procedure
Stop the detector (Position the circuit-breaker to O, switch off the control panel
and disconnect the mains cable at both ends).
Disconnect the cables connected the detection module to the electrical cabinet.
Disconnect the detection module from the customer's installation.
Remove the detection module from the customer's installation and place it on a flat
surface (clean workbench in a dust-free location).
It is sometimes necessary, to be able to access the inside of the module, to put the mod-
ule into the "maintenance" position (tip up the upper part of the module).

Maintenance / replacement
11
To put the module into the "maintenance" position, follow these steps.
Remove the 4 fixing screws (1) and partially unscrews the 2 screws (2).
Tip the upper part of the module to 90°.
Hold the raised upper part in place with a fixing screw (1).
Follow these steps in the reverse order to put the electrical cabinet back into the custom-
er's installation.
After any maintenance procedure which has required putting the module in the "mainte-
nance" position, never leave the module in this position. The module must always be
folded down when the detector is in use.
4.3 Maintenance of the internal calibrated leak
Calibration is offered as an option and as an accessory for this detector.
In the case of intensive use of the detector, a spare internal calibrated leak is recom-
mended. If this is not possible, the detector can still be used and calibrated using an ex-
ternal calibrated leak (see Calibration in the Operating Instructions).
4.3.1 Replacement
Tools Spare
parts
● mm Allen key supplied in the maintenance kit
● Internal calibrated leak (see 9)
2
2
1 1
1
NOTICE
Change the internal calibrated leak if it has significant impact marks.

12
Maintenance / replacement
Access the components of the detection module and put it into the "maintenance" po-
sition (see 4.2).
Disconnect the temperature sensor (3) from the calibrated leak. Never separate the
temperature sensor from the calibrated leak.
Unscrew the 2 fastening screws (2) without removing them.
Rotate the internal calibrated leak by 90°.
Replace the leak (1).
Connect the temperature sensor (3).
Update the settings of the internal calibrated leak (see Spectro Menu in the Operating
Instructions).
4.3.2 Recalibration
Most calibrated leaks can be used for many years (≈ 6 years) even though the tracer gas
is permanently escaping (the leak rate is very low compared with the amount of tracer
gas contained in the reservoir: annual loss is indicated on the calibrated leak identifica-
tion label).
However, to guarantee the reliability of the test, we recommend that you regularly reca-
librate (2 years maximum) every leak with reservoir to check its leak rate: this applies to
both internal and external calibrated leaks.
Return the leak to your Pfeiffer Vacuum service center for recalibration purposes.
4.3.3 Setting
The setting of the calibrated leak must be updated every time a calibrated leak (inter-
nal, external or machine) is replaced or after a recalibration (see Spectro Menu of the
Operating Instructions).
This operation can be carried out with the information featured on the calibrated leak
identification label or the certificate supplied with the calibrated leak.
● If 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 param-
eters (installed on the detection 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 param-
eters (installed on the customer's installation, never on the detection module) are dis-
played in the menu.
1
3
2

Maintenance / replacement
13
Fig. 1: Example of identification label
4.4 Analyzer cell maintenance
4.4.1 Dismantling
Tools ● 3 mm Allen key supplied in the maintenance kit
Procedure
Access the components of the detection module and put it into the "maintenance" po-
sition (see 4.2).
Unscrew the 3 fastening screws (4) from the deflector ( ) and remove it.
Disconnect the harness (1) from the cell.
Loosen the cell's 6 fixing screws (2).
Manually and horizontally release the analyzer cell (1).
4.4.2 Seals replacement
Check the condition of the seals every time you work on the analyzer cell (filament re-
placement for example): change them if necessary.
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
NOTICE
Cleanliness guarantee
During vacuum component maintenance operations, avoid any contamination which
could subsequently result in the degassing of the parts. To avoid this:
perform the maintenance in an appropriate area (clear, dust-free and ventilated)
use non-woven materials
dust the parts with filtered dry air
wear unpowdered vinyl gloves (clean room gloves)
WARNING
Risk of burning associated with hot surfaces
When in operation, certain mechanical parts can reach high temperatures. If the detec-
tor was used recently:
Let it cool down for at least 1 minutes before working on the analyzer cell.
When relevant, use protective gloves in accordance with the EN 420 standard.
4 5 2
2
1
3

14
Maintenance / replacement
Fig. 2: Replacement of the seals
Remove the analyzer cell from the detector (see 4.4.1).
Replace the 2 seals (3). Never lubricate the seals.
4.4.3 Filament replacement
Remove the analyzer cell from the detector (see 4.4.1).
Remove the fixing screw (4) and the washer of the defective filament.
Remove the 2 fastening clips ( ) using flat pliers (2 new clips are supplied with the
spare filament).
Replace the filament.
Reset the counter of the new filament (see Maintenance Menu in the Operating in-
structions).
Fig. 3: Dismantling the filament
Make sure that the filament connectors (6) are perpendicular to the supporting surface
and parallel to each other.
3
The oxidation of the iridium filament is normal: do not touch the filament with
your fingers.
F1 Filament 1 in the menu
F2 Filament 2 in the menu
F2 F1 4
A
A
F1
5

Maintenance / replacement
1
Fig. 4: Positioning the filament
Fit the new filament in its housing against the 2 centring stops (7). Attach it with the
screw (4) and washer supplied with the filament, using the Torx
®
screwdriver.
Take a fastening clip ( ) with the flat pliers: this clip will ensure electrical contact be-
tween the filament and the cell (see figure: Fitting the fastening clip, index A).
Fit the clip on the connector (6) and the strip of the filament (8) (see figure: Fitting the
fastening clip, index B).
Push in the clip ( ) with the pliers until it stops (see figure: Fitting the fastening clip,
index C).
Repeat the last 3 operations for the second connector.
Reset the counter of the new filament (see Maintenance Menu in the Operating in-
structions).
Fig. 5: Fitting of the fastening clip
6
F1
8
4
7
A B
D C
5

16
Maintenance / replacement
4.5 Maintenance of the turbomolecular pump
4.5.1 Wheel replacement
To protect the turbomolecular pump of any involuntary air inlet, the wheel (9) of the pump
can be replaced by a special screw.
If necessary, an air inlet can be realized by unscrewing the special screw.
Do not use the wheel (or screw) regularly; only use it for maintenance purposes. Using
it too frequently may cause leaks.
Tools ● 13 mm open end wrench
● Special screw (delivered with the product)
Procedure Access the components of the detection module (see 4.2).
Remove the wheel from the pump.
Remove the o’ring from the wheel.
Place the o’ring around the special screw.
Put the special screw instead of the wheel.
4.5.2 Access to the fluid reservoir
Tools Spare
parts
● Flat pliers
● 2 flat-head screwdrivers
● 13 mm open end wrench
● Special tool (see 9)
● Torque wrench (13 N.m)
● Clean, lint-free cloth
● Oil reservoir (see 9)
Procedure Access the components of the detection module (see 4.2).
To stop the pump more quickly, create an inlet vent by rotating the wheel (1) up to 1
full turn. Return the wheel to its starting position (port closed).
– If the wheel has been replaced by the special screw, create an inlet vent by rotating
the screw up to 1 full turn. Return the screw to its starting position (port closed).
– Do not use the wheel (or screw) regularly; only use it for maintenance purposes.
Using it too frequently may cause leaks.
Leave the module to cool for 10 mn. if necessary.
Position the module vertically with the access point to the pump (2) at the top.
WARNING
Risk of burning associated with hot surfaces
When in operation, certain mechanical parts can reach high temperatures. If the detec-
tor was used recently:
Let it cool down for at least 10 minutes before working on the turbomolecular pump.
If necessary wear protective gloves according to directive EN 420.
1
2
9
3
4
5
7
8
6

Maintenance / replacement
17
4.5.3 Replacing the operating fluid reservoir
Screw out the end cover 7 on the bottom of the turbopump with special tool E. Pay
attention to O-ring 30 .
1 2
WARNING
Risk of intoxication in case of contact with substances hazardous to health.
Always take appropriate precautions when handling the operating fluid reservoir:
Dispose of operating fluid reservoirs in accordance with the applicable legislation.
Safety data sheet available upon request or at www.pfeiffer-vacuum.com
Take the required safety precautions to avoid creating health risks or polluting the en-
vironment in case of contamination.
Decontaminate the parts affected before performing maintenance work.
Operating fluid filling
The operating fluid reservoir is sufficiently filled with operating fluid.
Do not add additional operating fluid.
Fig. 6: Assembly Disassembly of the operating fluid reservoir
7 End cover
40 Operating fluid reservoir
40a Porex rod
40c O-ring
30 O-ring
E Key for end cover
7
E
7
305
40

18
Maintenance / replacement
Lift out the operating fluid reservoir using two screwdrivers.
Using tweezers, pull out the Poroplast rods (8x).
Remove impurities from the turbopump and the end cover with a clean, lint-free cloth.
Do not use any cleaning fluids!
Using tweezers, insert the new Poroplast rods (8x).
Push the new operating fluid reservoir up to the O-ring 40c into the pump.
–Do not perform any pressure upon the operating fluid reservoir!
Screw in the end cover with the new O-ring 30 . The operating fluid reservoir is
brought into the correct axial position by the end cover.
Observe the end cover’s tightening torque 13 Nm ± 10 % .
4.6 Maintenance fans
4.6.1 Replacement of electrical cabinet fan
Tools Spare
parts
● Philips screwdriver
● Fan (see 9)
Procedure Access to electrical cabinet components (see 4.1).
40
40a
40c
7
E
V1
4
1
2
5
3

Maintenance / replacement
19
Disconnect the harness ( ) of the fan (V1)
Remove the filter (1).
Unscrew the 4 fastening screws (2) from the protective grill (3). Keep the metal hooks
(4) of the old fan.
Put a new fan, ensuring it is the correct way round (arrows).
Fit the 4 metal hooks (4) onto each angle of the fan.
Replace the protective grill (3).
Fasten the assembly using the 4 fixing screws (2).
Replace the filter (1).
Connect the fan harness ( ).
4.6.2 Replacement of detection module fan
Tools Spare
parts
● Philips screwdriver
● Fan (see 9)
Procedure Access to electrical cabinet components (see 4.1).
Disconnect the harness (1) of the fan (V2).
Loosen the 4 fixing screws (3).
Retain the protective grill (4).
Put a new fan, ensuring it is the correct way around.
Replace the protective grill (4)
Fasten the assembly using the 4 fixing screws (3).
Connect the fan harness (1), respecting the (+) and (-) polarities.
4.7 Air filter maintenance
4.7.1 Air filter replacement
Tools Spare
parts
● Air filter (see 9)
Procedure Access to electrical cabinet components (see 4.1). There is no need to open the elec-
trical cabinet
V24
1
3

20
Maintenance / replacement
Unclipping the air filter.
Replacing the used filter: follow the assembly order indicated below (1 + 2 + 3: do not
forget the grill).
Fig. 7: Air filter assembly
Snap together the entire air filter.
4.8 Maintenance of the sniffer module
Sniffer module option accessory
4.8.1 Replacement of flow reducer
Tools Spare
parts
● mm Allen key supplied in the maintenance kit
● Flow reducer (see 9)
Procedure Access the components of the detection module (see 4.2).
Loosen the 4 fixing screws (1).
Remove the sniffer module (2).
Remove the seal (3) of the flow reducer (4): retain the seal.
Put the seal (3) onto the new flow reducer (4).
1
3
2
1
2
5
4
3