Endress+Hauser FQG60 Operator's manual

Products Solutions Services
Special Documentation
Source container FQG60, FQG61,
FQG62, FQG63, FQG66
Instructions for loading and changing the source
Label set
SD00297F/00/EN/16.16
71298889

Table of contents
2 Endress+Hauser
Table of contents
1 Document information .............. 3
1.1 Document function ..................... 3
1.2 Symbols used .......................... 3
1.3 Documentation ........................ 4
2 Basic safety instructions ............ 6
2.1 Requirements for personnel ............... 6
2.2 Preparation and implementation ........... 6
2.3 Radiation protection .................... 6
2.4 Estimating the dose ..................... 7
3 Label set for loading and changing
the source .......................... 8
3.1 Scope of delivery ....................... 8
3.2 Labeling ............................. 8
3.3 Sign indicating radiation source is loaded ..... 8
4 FQG60
Loading and changing the source .... 9
4.1 Order code 020, option B, C ............... 9
5 FQG61, FQG62
Loading and changing the source ... 12
5.1 Order code 020, option A ................ 12
5.2 Order code 020, option B ................ 14
5.3 Order code 020, option C ................ 16
5.4 Order code 020, option D ................ 18
5.5 Order code 020, option K, L, M, N .......... 20
6 FQG63
Loading and changing the source ... 22
6.1 Order code 020, option B ................ 22
6.2 Order code 020, option C ................ 26
7 FQG66
Loading and changing the source ... 30
7.1 Order code 020, option A (manual operation)
and option B (manual operation with
proximity switch) ...................... 30
7.2 Order code 020, option L (pneumatic drive) .. 35

Source container FQG60, FQG61, FQG62, FQG63, FQG66 Document information
Endress+Hauser 3
1 Document information
1.1 Document function
This document describes the process for loading and changing the source for the source
containers FQG60, FQG61, FQG62 FQG63 and FQG66.
1.2 Symbols used
1.2.1 Safety symbols
Symbol Meaning
DANGER
DANGER!
This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in
serious or fatal injury.
WARNING
WARNING!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
serious or fatal injury.
CAUTION
CAUTION!
This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in
minor or medium injury.
NOTICE
NOTE!
This symbol contains information on procedures and other facts which do not result in
personal injury.
1.2.2 Symbols for certain types of information
Symbol Meaning
Permitted
Procedures, processes or actions that are permitted.
Preferred
Procedures, processes or actions that are preferred.
Forbidden
Procedures, processes or actions that are forbidden.
Tip
Indicates additional information.
Reference to documentation
Reference to page
Reference to graphic
,… ,
Series of steps
Result of a step
Help in the event of a problem
Visual inspection

Document information Source container FQG60, FQG61, FQG62, FQG63, FQG66
4 Endress+Hauser
1.2.3 Symbols in graphics
Symbol Meaning
1, 2, 3 ... Item numbers
,… ,
Series of steps
A, B, C, ... Views
A-A, B-B, C-C, ... Sections
-
Hazardous area
Indicates a hazardous area.
.
Safe area (non-hazardous area)
Indicates the non-hazardous area.
1.3 Documentation
Source container FQG60
Documentation Comment
TI00445F/00 • The document is provided with the device.
• The documentation is available on the Internet:
→ www.de.endress.com
Source container FQG61, FQG62
Documentation Comment
TI00435/00 • The document is provided with the device.
• The documentation is available on the Internet:
→ www.de.endress.com
Source container FQG61, FQG62
Documentation Comment
TI00446/00 • The document is provided with the device.
• The documentation is available on the Internet:
→ www.de.endress.com
FQG66 source container
Documentation Comment
TI01171F/00 The documentation is available on the Internet:
→ www.de.endress.com
BA01327F/00 • The document is provided with the device.
• The documentation is available on the Internet:
→ www.de.endress.com
Additional notes
Documentation Comment
SD00292F/00 Supplementary Instruction Manual for Canada (FQG60,
FQG61, FQG62, FQG63, FQG66)
SD00293F/00 Supplementary Instruction Manual for USA (FQG61,
FQG62)
SD00313F/00 Supplementary Instruction Manual for USA (FQG63)

Source container FQG60, FQG61, FQG62, FQG63, FQG66 Document information
Endress+Hauser 5
Documentation Comment
SD01561F/00 Supplementary Instruction Manual for USA (FQG66)
SD01316F/00 Instructions for the transportation cask for the
transportation of radioactive source capsules

Basic safety instructions Source container FQG60, FQG61, FQG62, FQG63, FQG66
6 Endress+Hauser
2 Basic safety instructions
2.1 Requirements for personnel
The personnel for loading or changing the source must meet the following requirements:
‣Trained, qualified specialists: must have a relevant qualification for this specific
function and task
‣Is familiar with the technical design of the source container and the source holder
‣Before beginning work, the specialist staff must read and understood the instructions
in the manuals (→  4). All safety instructions contained in this documentation,
especially the instructions on radiation protection, must be strictly observed.
LCAUTION
Check compatibility of source with source container
‣It must be ensured that the activity does not exceed the maximum permitted value and
complies with national approvals.
‣The source may only be exchanged if the same capsule type is used.
‣All maintenance activities, such as removal or replacement of the radioactive source,
may only be carried out by certified personnel whose radiation exposure is monitored
in accordance with local regulations or the handling permit. In this context, ensure that
this is permitted by the scope of the handling permit. All local conditions must be taken
into consideration.
2.2 Preparation and implementation
LWARNING
Preparation and implementation
‣Detailed preparations are required to ensure that the process of replacing the radiation
source is as fast as possible. Make sure that the tools and resources required (screened
container for replaced source etc.) are at the ready before commencing the task.
‣When changing the source, strictly observe all the instructions given in this manual.
‣If the source container is mounted upside down, it is not permitted to replace the
source. In this case, the source container must first be unbolted from its mounting
position.
‣All work must be carried out from a safe distance. There must be sufficient screening
between the source holder and the body that only the exposure of the hands and
forearms must be considered. Suitable measures (e.g. blocking of access) must be taken
to protect other individuals from all possible risk.
‣The planned procedure must guarantee that the distance between the hands and the
source never falls below 10 cm (3.94 in).
‣The source holder must be easily movable and may not show corrosion or damage.
‣When exchanging the source, all seals must be checked and replaced if necessary.
2.3 Radiation protection
LWARNING
Radiation protection
‣The source container must be in the "OFF" position and secured in this position by a
lock.
‣We recommend loading or changing the source in a suitable room (e.g. workshop) and
not in the plant on site.
‣Never grip the source capsule directly by the hands; always use a tool (pliers or long
pair of tweezers) to keep a distance of at least 10 cm (3.94 in).
‣After loading or changing the source, check if the switching mechanism (ON-OFF
switch) on the source container is working properly.

Source container FQG60, FQG61, FQG62, FQG63, FQG66 Basic safety instructions
Endress+Hauser 7
2.4 Estimating the dose
Under the conditions stated above, it is assumed that the changing procedure (removal
and installation) will take 2 min. This results in the following dose (including safety
margin):
15 mSv 1) with 18.5 GBq 137Cs or 12.1 mSv with 1.85 GBq 60Co
In order to keep the radiation exposure as low as possible when replacing the source, we
generally recommend to have the source changed at Endress+Hauser. If the activity
exceeds 18.5 GBq (137Cs) or 1.85 GBq (60Co) we urgently advise users to have the source
changed at Endress+Hauser.
1) This is approximately one tenth of the limit for the organ absorbed dose according to Section 54.2 of the German Radiation Protection Ordinance
(Strahlenschutzverordnung) for hands or forearms of occupationally exposed persons, category B, value 150 mSv.

Label set for loading and changing the source Source container FQG60, FQG61, FQG62, FQG63, FQG66
8 Endress+Hauser
3 Label set for loading and changing the source
3.1 Scope of delivery
• A: Radiation source nameplate: 107 x 17 mm (4.21 x 0.67 in), stainless steel
• B: Radiation source nameplate 45 x 55 mm (1.77 x 2.17 in), stainless steel
• C: Adhesive nameplate 30 x 48 mm (1.18 x 1.89 in)
• D: 2 adhesive labels "RADIOACTIVE"
• 4 grooved pins
• Sealing wire and seals
3.2 Labeling
After loading a source container or changing a source, the appropriate nameplates for the
radiation source must be marked with a durable inscription (e.g. by stamped letters) in the
following way:
2
3
4
5
1
2
3
4
5
1
2
3
4
5
A
B
Ser.-No.:
Order Code:
250002810--
Date:
Activity:
Caution Radioactive Material
Gamma Source
Radionuclide:
Source No.:
Source No.:
Ser.-No.:
Order Code:
250002820--
Radionuclide:
Gamma Source
Date:
Caution Radioactive Material
Activity:
Order Code:
250002619--
Caution radioactive material
Radionuclide:
Gamma Source
Date:
Activity:
Source No.:
C
RADIOACTIVE
D
1
A0018434
1 Wording "Caution Radioactive Material", if required
2 "Co60" or "Cs137"
3 Serial number of the source capsule (according to supplier certificate)
4 Activity including unit (MBq or GBq)
5 Date of loading (month/year)
3.3 Sign indicating radiation source is loaded
Depending on the version or the approval,
a warning sign "Caution - Radioactive
Material" is supplied with the source
container.
Once the emitter source is loaded, the
warning sign must be secured at the
designated point or on the ring eyelet of
the container.
Rayonnement - Danger - Radiation
Caution - Radioactive Material
Vorsicht Strahlung
A0018436

Source container FQG60, FQG61, FQG62, FQG63, FQG66 FQG60 Loading and changing the source
Endress+Hauser 9
4 FQG60 Loading and changing the source
4.1 Order code 020, option B, C
Removing the source insert
• Set the shutter and padlock (1) to the
OFF switch position.
• Remove the grooved pin and nameplate
(2).
LWARNING
Radiation is very high!
‣Observe the radiation protection
instructions (→  6).
1
2
A0018437
• Unscrew and remove the source insert
(3) using wrench AF24.
NOTICE
Graphite seal
‣Before initial loading, the source insert
(3) is only screwed finger-tight.
‣The graphite seal (4) is not press-
fitted.
‣For source change only: replace the
graphite seal, clean the sealing
surfaces of residue and place the
sealing ring on the sealing surface.
3
4
A0018438

FQG60 Loading and changing the source Source container FQG60, FQG61, FQG62, FQG63, FQG66
10 Endress+Hauser
Changing/loading the source capsule
LWARNING
Make sure the source capsule does not
fall out
‣Hold the source insert (3) including the
protection cap (5) facing downwards.
• Unscrew the protection cap (5).
• For source change only: let the source
capsule (6) drop into a screened
container. Check O-rings (7) and replace
if necessary.
• Insert the new source capsule, and screw
protection cap (5) on tightly as far as it
will go.
7
56
A0018439
Inserting the source insert
• Insert the source insert (3) and screw it
into place, torque 75 ±5 Nm (55.31
±3.68 lbf ft).
3
4
A0018440
Attaching the nameplate
• Label the radiation source nameplate
(B) ("labeling", →  8) and fix it to the
source insert using four grooved pins.
• Stick the adhesive label (D)
"RADIOACTIVE" on the indicated
position (if not yet present).
The nameplates (A) and (C) are not
needed for this version of the source
container.
LCAUTION
The radiation source nameplate (B)
provides access protection to the source
in conjunction with the four grooved
pins.
‣The four grooved pins must be securely
fastened!
B
RADIOACTIVE
D
A0018441

Source container FQG60, FQG61, FQG62, FQG63, FQG66 FQG60 Loading and changing the source
Endress+Hauser 11
4.1.1 Check after loading
Finally, the correct operation of the source container has to be checked:
• Is the padlock (1) fully operational and undamaged?
If the padlock is damaged or not fully operational, do not use it again.
• Do the specifications on the nameplate (2) of the radiation source match the
specifications on the certificate of the radiation source?
• Has the source container been damaged during the loading? (visual inspection)
• Are all necessary warning labels (B, D) attached?
Observe the national regulations.
• The limit values that apply in your country must be checked and observed.
• If one or more criteria are not met, do not continue to use the source container. For
more information contact the Service Department at Endress+Hauser.

FQG61, FQG62 Loading and changing the source Source container FQG60, FQG61, FQG62, FQG63, FQG66
12 Endress+Hauser
5 FQG61, FQG62
Loading and changing the source
5.1 Order code 020, option A
The source inserts of the following source containers are not compatible with one
other:
• FQG61 or FQG62 with the previous models QG20 or QG100
• FQG61 with FQG62
Removing the source insert
• Remove the cover (see TI00435F/00).
• If necessary, screw extension rod (1)
with M8 thread into the threaded bush
of the insert to achieve as large a
distance as possible from the radiation
source.
• Unlock the lock (2).
LWARNING
Radiation is very high!
‣Observe the radiation protection
instructions (→  6).
LCAUTION
Is the lock not functioning correctly or
damaged?
‣Do not use the lock again. Replace
source insert!
1
2
3
4
5
A0018442
• For the version with density modification: release setscrew (3) using AF5 Allen key.
• Remove seal connecting the locking pin (4) to the safety screw (5).
• Press in locking pin (4) and turn the insert until the marking arrow is pointing to the
locking pin (4).
• Pull out insert.
• To protect against dirt, place the cover on the source container until the insert is
reinstalled.
Inserting the source insert
• Push insert into the source container
and turn it until the locking pin (4) pops
out.
• Continue turning the insert until the
OFF position is reached.
• Press in lock (2) with key and lock it.
Remove key.
• If necessary, remove extension rod (1).
• For the version with density
modification: screw in setscrew (3).
• Attach new seal connecting the locking
pin (4) to the safety screw (5).
6
7
8
A0018443

Source container FQG60, FQG61, FQG62, FQG63, FQG66 FQG61, FQG62 Loading and changing the source
Endress+Hauser 13
Changing/loading the source capsule
• If present, remove the safety screw (6) using an AF2.5 Allen key.
• Move the cover plate (7) to the side (to do so, use a screwdriver at the bore to lift the
cover plate slightly from the cylinder, for example).
• For source change only: let the source capsule (8) drop into a screened container.
• Insert new source capsule, close cover plate (7).
• Screw in safety screw (6) (optional).
Attaching/changing the nameplate
• Label the radiation source nameplate
(A) and fix it to the housing ring of the
source container using two grooved
pins.
• Label the adhesive nameplate (C) and
stick it on the insert. Prior to this, clean
the adhesive surface with a suitable
cleaning agent.
• Stick the adhesive label (D)
"RADIOACTIVE" on the cover (if not yet
present). Prior to this, clean the
adhesive surface with a suitable
cleaning agent.
• Put on the cover.
Nameplate (B) is not needed for this
version of the source container.
A
D
C
A0018444
5.1.1 Check after loading
Finally, the correct operation of the source container has to be checked:
• Can the source insert easily be turned to the ON/OFF position?
• Does the lock (2) engage and is there a limit-stop?
• Are the locking pin (4) and the safety screw (5) sealed again?
• Do the specifications on the nameplate of the radiation source match the specifications
on the certificate of the radiation source?
• After completion of the check the source insert must be set to the OFF position and
secured with a padlock so it cannot be switched on.
• The limit values that apply in your country must be checked and observed.
• If one or more criteria are not met, do not continue to use the source container. For
more information contact the Service Department at Endress+Hauser.

FQG61, FQG62 Loading and changing the source Source container FQG60, FQG61, FQG62, FQG63, FQG66
14 Endress+Hauser
5.2 Order code 020, option B
The source inserts of the following source containers are not compatible with one
other:
• FQG61 or FQG62 with the previous models QG20 or QG100
• FQG61 with FQG62
Removing the source insert
• Remove safety bracket (1).
• Release setscrew (4) if present.
• Remove padlock (5).
• Remove seal connecting the locking pin
(2) to the safety screw (3).
• Press in locking pin. Pull out locking bolt
(6) and move the rotary bracket over the
locking pin.
• Pull out insert.
LWARNING
Radiation is very high!
‣Observe the radiation protection
instructions (→  6).
1
4
5
6
2
3
A0018445
Changing/loading the source capsule
• If present, remove the safety screw (8)
using an AF2.5 Allen key.
• Move the cover plate (7) to the side (to
do so, use a screwdriver at the bore to
lift the cover plate slightly from the
cylinder, for example).
• For source change only: let the source
capsule (9) drop into a screened
container.
• Insert new source capsule, close cover
plate (7).
• Screw in safety screw (8) (optional).
8
7
9
A0018446

Source container FQG60, FQG61, FQG62, FQG63, FQG66 FQG61, FQG62 Loading and changing the source
Endress+Hauser 15
Inserting the source insert
• Push insert into the source container and turn until the locking pin (2) pops out.
• Continue turning the insert until the OFF position is reached.
• Insert padlock (5) into the hole provided and lock it.
• Let the locking bolt (6) snap into place.
• Tighten setscrew (4).
• Secure the locking pin (2) and safety screw (3) together with a new seal.
• Fit the safety bracket (1).
Attaching/changing the nameplate
• Label the radiation source nameplate
(B) and fix it to the source insert using
four grooved pins.
• Stick the adhesive label (D)
"RADIOACTIVE" on the indicated
position (if not yet present). Prior to
this, clean the adhesive surface with a
suitable cleaning agent.
• Put on the cover.
The nameplates (A) and (C) are not
needed for this version of the source
container.
DB
1
2
3
4
5
Source No.:
Ser.-No.:
Order Code:
250002820--
Radionuclide:
Gamma Source
Date:
Caution Radioactive Material
Activity:
A0018447
1 Wording "Caution Radioactive Material", if required
2 "Co60" or "Cs137"
3 Serial number of the source capsule (according to
supplier certificate)
4 Activity including unit (MBq or GBq)
5 Date of loading (month/year)
5.2.1 Check after loading
Finally, the correct operation of the source container has to be checked:
• Is the safety bracket (1) mounted correctly?
• Can the source insert easily be turned to the ON/OFF position?
• Does the locking bolt (6) engage and is there a limit-stop?
• Is it impossible to pull out the source insert in any position?
• Is the padlock (5) fully operational and undamaged?
If the padlock is damaged or not fully operational, do not use it again.
• Are the locking pin (2) and the safety screw (3) sealed again?
• Do the specifications on the nameplate of the radiation source match the specifications
on the certificate of the radiation source?
• After completion of the check the source insert must be set to the OFF position and
secured with a padlock so it cannot be switched on.
• The limit values that apply in your country must be checked and observed.
• If one or more criteria are not met, do not continue to use the source container. For
more information contact the Service Department at Endress+Hauser.

FQG61, FQG62 Loading and changing the source Source container FQG60, FQG61, FQG62, FQG63, FQG66
16 Endress+Hauser
5.3 Order code 020, option C
The source inserts of the following source containers are not compatible with one
other:
• FQG61 or FQG62 with the previous models QG20 or QG100
• FQG61 with FQG62
Removing the source insert
• Release setscrew (2) if present.
• Remove seal connecting the locking pin
(3) to the safety screw (4).
• Remove padlock (1).
• Press in locking pin (3). Move the rotary
bracket over it.
• Pull out insert.
LWARNING
Radiation is very high!
‣Observe the radiation protection
instructions (→  6).
AUS
OFF
3
42
1
A0018448
Changing/loading the source capsule
• If present, remove the safety screw (6)
using an AF2.5 Allen key.
• Move the cover plate (5) to the side (to
do so, use a screwdriver at the bore to
lift the cover plate slightly from the
cylinder, for example).
• For source change only: let the source
capsule (7) drop into a screened
container.
• Insert new source capsule, close cover
plate (5).
• Screw in safety screw (6) (optional).
6
5
7
A0018449

Source container FQG60, FQG61, FQG62, FQG63, FQG66 FQG61, FQG62 Loading and changing the source
Endress+Hauser 17
Inserting the source insert
• Push insert into the source container and turn until the locking pin (3) pops out.
• Continue turning the insert until the OFF position is reached.
• Insert padlock (1) into the hole provided and lock it.
• Tighten setscrew (2).
• Secure the locking pin (3) and safety screw (4) together with a new seal.
Attaching/changing the nameplate
• Label the radiation source nameplate
(B) and fix it to the source insert using
four grooved pins.
• Stick the adhesive label (D)
"RADIOACTIVE" on the indicated
position (if not yet present). Prior to
this, clean the adhesive surface with a
suitable cleaning agent.
The nameplates (A) and (C) are not
needed for this version of the source
container.
DB
1
2
3
4
5
Source No.:
Ser.-No.:
Order Code:
250002820--
Radionuclide:
Gamma Source
Date:
Caution Radioactive Material
Activity:
A0022931
1 Wording "Caution Radioactive Material", if required
2 "Co60" or "Cs137"
3 Serial number of the source capsule (according to
supplier certificate)
4 Activity including unit (MBq or GBq)
5 Date of loading (month/year)
5.3.1 Check after loading
Finally, the correct operation of the source container has to be checked:
• Can the source insert easily be turned to the ON/OFF position?
• Is it impossible to pull out the source insert in any position?
• Is the padlock (1) fully operational and undamaged?
If the padlock is damaged or not fully operational, do not use it again.
• Are the locking pin (3) and the safety screw (4) sealed again?
• Do the specifications on the nameplate of the radiation source match the specifications
on the certificate of the radiation source?
• After completion of the check the source insert must be set to the OFF position and
secured with a padlock so it cannot be switched on.
• The limit values that apply in your country must be checked and observed.
• If one or more criteria are not met, do not continue to use the source container. For
more information contact the Service Department at Endress+Hauser.

FQG61, FQG62 Loading and changing the source Source container FQG60, FQG61, FQG62, FQG63, FQG66
18 Endress+Hauser
5.4 Order code 020, option D
Removing the source insert
• Release setscrew (4) if present.
• Remove the seal from the screw (1) and
unscrew the screw until it can be pulled
up.
• Remove padlock (3).
• Fold up fastening bracket (2).
• If necessary, screw extension rod with
M6 thread into the thread of the source
holder (5) to achieve as large a distance
as possible from the radiation source
during transportation.
• Unscrew source holder (5) using wrench
AF13 and remove.
LWARNING
Radiation is very high!
‣Observe the radiation protection
instructions (→  6).
NOTICE
Identifying feature: source holder to
capsule type
‣9a: Source holder with chamfer,
intended for sources with nipple.
‣9b: Source holder without chamfer for
sources with M4 thread.
‣9c: Source holder with curve, intended
for sources with M4 thread (VZ-3579).
AUS
OFF
EIN
ON
AUS
OFF
1
5
3
4
2
A0018450
Inserting the source insert
• For source change only: check O-rings
and replace if necessary.
• Screw source holder (5) into the source
container and tighten source holder
with wrench AF13. Remove extension
rod if necessary.
• Fold down fastening bracket (4).
• Insert padlock (1) into the hole provided
and lock it.
• Fasten setscrew (2).
• Tighten screw (3).
• Secure the screw (3) with a new seal.
6
77a 8
9 a 9 b 9 c
5
A0018451

Source container FQG60, FQG61, FQG62, FQG63, FQG66 FQG61, FQG62 Loading and changing the source
Endress+Hauser 19
Changing/loading the source capsule
• For source change only:
Insert the blade of a screwdriver (width 4 mm) into the slit (6) in the source holder and
press out the source capsule with nipple (7) or unscrew source capsule (7 a) with
thread M4 using a tool. Let source capsule drop into a screened container.
• Insert new source capsule:
Press capsule (7) into the source holder until it engages. For M4 threaded versions:
insert a spring washer (8) and screw in the source capsule (7 a); torque
2±0.5 Nm(1.47±0.36 lbf ft).
Attaching/changing the nameplate
• Label the radiation source nameplate
(B) and fix it to the source insert using
four grooved pins.
• Stick the adhesive label (D)
"RADIOACTIVE" on the indicated
position (if not yet present). Prior to
this, clean the adhesive surface with a
suitable cleaning agent.
The nameplates (A) and (C) are not
needed for this version of the source
container.
DB
1
2
3
4
5
Source No.:
Ser.-No.:
Order Code:
250002820--
Radionuclide:
Gamma Source
Date:
Caution Radioactive Material
Activity:
A0022932
1 Wording "Caution Radioactive Material", if required
2 "Co60" or "Cs137"
3 Serial number of the source capsule (according to
supplier certificate)
4 Activity including unit (MBq or GBq)
5 Date of loading (month/year)
5.4.1 Check after loading
Finally, the correct operation of the source container has to be checked:
• Can the source insert easily be turned to the ON/OFF position?
• Is the padlock (3) fully operational and undamaged?
If the padlock is damaged or not fully operational, do not use it again.
• Is the screw (1) sealed again?
• Do the specifications on the nameplate of the radiation source match the specifications
on the certificate of the radiation source?
• After completion of the check the source insert must be set to the OFF position and
secured with a padlock so it cannot be switched on.
• The limit values that apply in your country must be checked and observed.
• If one or more criteria are not met, do not continue to use the source container. For
more information contact the Service Department at Endress+Hauser.

FQG61, FQG62 Loading and changing the source Source container FQG60, FQG61, FQG62, FQG63, FQG66
20 Endress+Hauser
5.5 Order code 020, option K, L, M, N
A B
4
5
3
1
2
8
9
10
11
A
13
C
12
7
6
D
A
A0018452
A FQG61/FQG62; Order code 020, option K, L
B FQG61/FQG62; Order code 020, option M, N
Disassembling the drive unit and square adapter
• The source container must be in the "OFF" position. Disconnect compressed air and
remove supply lines.
• Open padlock (4) and remove seal (3).
• Loosen screws (6).
• Remove complete drive unit.
• Remove the square adapter (13).
LWARNING
Radiation is very high!
‣Observe the radiation protection instructions (→  6).
Radiation source removal and installation for option K, L
• Release the safety screw (8).
• Turn the source insert (9) 1/4 turn anticlockwise and remove.
• Remove and insert the radiation source →  12
• For source change only: check O-rings and replace if necessary.
• Push source insert (9) into source container.
• Turn the source insert (9) until the marking arrow (10) is above the "AUS-OFF" marking
on the adapter disc (12).
• Screw safety screw (8) back in.
Radiation source removal and installation for option K, L
• If necessary, screw extension rod with M6 thread into the thread of the source holder
(11) to achieve as large a distance as possible from the radiation source during
transportation.
• Observe information concerning source holder →  18
• Unscrew source holder (11) using wrench AF13 and remove.
• Remove/insert radiation source →  18
• For source change only: check O-rings and replace if necessary.
• Screw source holder (11) into the source container and tighten source holder with
wrench AF13. Remove extension rod if necessary.