Endress+Hauser CleanFit P CPA 474 User manual

Quality made by
Endress+Hauser
ISO 9001
BA 345C/07/en/08.03
51511600 CleanFit P CPA 474
Retractable Process Assembly
Operating Instructions

CleanFit P CPA 474
Endress+Hauser 3
Table of contents
1 Safety instructions . . . . . . . . . . . . . . 4
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installation, commissioning and operation . . . 4
1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.5 Notes on safety icons and symbols . . . . . . . . . 5
2 Identification . . . . . . . . . . . . . . . . . . . 6
2.1 Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Certificates and approvals . . . . . . . . . . . . . . . . 6
2.4 Product structure . . . . . . . . . . . . . . . . . . . . . . . 7
3 Installation. . . . . . . . . . . . . . . . . . . . . 8
3.1 Incoming acceptance, transport, storage . . . . 8
3.2 Installation conditions . . . . . . . . . . . . . . . . . . . 8
3.3 Installation instructions . . . . . . . . . . . . . . . . . 11
3.4 Post-installation check . . . . . . . . . . . . . . . . . . 18
4 Operation . . . . . . . . . . . . . . . . . . . . . 19
4.1 First commissioning . . . . . . . . . . . . . . . . . . . . 19
4.2 Operating elements . . . . . . . . . . . . . . . . . . . . 19
4.3 Manual operation . . . . . . . . . . . . . . . . . . . . . . 20
4.4 Pneumatic operation . . . . . . . . . . . . . . . . . . . 20
5 Maintenance . . . . . . . . . . . . . . . . . . 22
5.1 Cleaning of the assembly . . . . . . . . . . . . . . . 22
5.2 Cleaning of the sensor . . . . . . . . . . . . . . . . . . 22
5.3 Cleaning agents . . . . . . . . . . . . . . . . . . . . . . . 23
5.4 Notes on calibration . . . . . . . . . . . . . . . . . . . . 23
6 Accessories . . . . . . . . . . . . . . . . . . . 24
6.1 Water filter and pressure reducer . . . . . . . . . 24
6.2 Rinse connection adapter . . . . . . . . . . . . . . . 24
6.3 Flow assembly . . . . . . . . . . . . . . . . . . . . . . . . 24
6.4 Pneumatic throttle . . . . . . . . . . . . . . . . . . . . . 24
6.5 Hose connectors for rinse chamber . . . . . . . 25
6.6 Limit position switches . . . . . . . . . . . . . . . . . . 25
6.7 Inlet and outlet safety seal . . . . . . . . . . . . . . . 25
6.8 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.9 Buffer solutions . . . . . . . . . . . . . . . . . . . . . . . 26
6.10 Measuring cables . . . . . . . . . . . . . . . . . . . . . 27
6.11 Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.12 Measuring, cleaning and calibration systems 27
6.13 Documentation . . . . . . . . . . . . . . . . . . . . . . . . 27
7 Trouble-shooting. . . . . . . . . . . . . . . 28
7.1 Replacing damaged parts . . . . . . . . . . . . . . . 28
7.2 Replacing seals . . . . . . . . . . . . . . . . . . . . . . . 28
7.3 Spare part kits . . . . . . . . . . . . . . . . . . . . . . . . 31
7.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.5 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8 Technical data . . . . . . . . . . . . . . . . . 35
8.1 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.2 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.3 Mechanical construction . . . . . . . . . . . . . . . . . 36
Index . . . . . . . . . . . . . . . . . . . . . . . . . 37

Safety instructions CleanFit P CPA 474
4Endress+Hauser
1Safetyinstructions
1.1 Designated use
The manually or pneumatically operated retractable assembly Cleanfit P CPA 474 is
designed for installing pH/redox sensors in tanks and pipes.
Its mechanical design permits its use in pressurised systems (see "Technical data").
Any other use than the one described here compromises the safety of persons and the
entire measuring system and is, therefore, not permitted.
The manufacturer is not liable for damage caused by improper or non-designated use.
1.2 Installation, commissioning and operation
Please note the following items:
•Installation, electrical connection, commissioning, operation and maintenance of the
measuring system must only be carried out by trained technical personnel.
The technical personnel must be authorised for the specified activities by the system
operator.
•Technical personnel must have read and understood these Operating Instructions
and must adhere to them.
•Before commissioning the entire measuring point, check all the connections for
correctness. Ensure that electrical cables and hose connections are not damaged.
•Do not operate damaged products and secure them against unintentional
commissioning. Mark the damaged product as being defective.
•Measuring point faults may only be rectified by authorised and specially trained
personnel.
•If faults can not be rectified, the products must be taken out of service and secured
against unintentional commissioning.
•Repairs not described in these Operating Instructions may only be carried out at the
manufacturer’s or by the Endress+Hauser service organisation.
1.3 Operational safety
The assembly has been designed and tested according to the state of the art and left
the factory in perfect functioning order.
Relevant regulations and European standards have been met.
As the user, you are responsible for complying with the following safety conditions:
•Installation instructions
•Local prevailing standards and regulations.
1.4 Return
If the assembly has to be repaired, please return it cleaned to the Endress+Hauser
sales centre responsible.
Please use the original packaging, if possible.
Please enclose the completed Dangerous Goods sheet (copy the second last page of
these Operating instructions) with the packaging and also the shipping documents.
No repair without completed Dangerous Goods sheet!

CleanFit P CPA 474 Safety instructions
Endress+Hauser 5
1.5 Notes on safety icons and symbols
#
Warning!
This symbol alerts you to hazards. They can cause serious damage to the instrument or
to persons if ignored.
"
Caution!
This symbol alerts you to possible faults which could arise from incorrect operation.
They could cause damage to the instrument if ignored.
!
Note!
This symbol indicates important items of information.

Identification CleanFit P CPA 474
6Endress+Hauser
2 Identification
2.1 Nameplate
You can recognise the assembly version from the order code on the nameplate. Please
compare this with your order.
You can find the possible assembly versions and the resulting order code from the
product structure.
2.2 Scope of delivery
The scope of delivery comprises:
•CleanFit assembly (ordered version)
•Operating Instructions (english).
If you have any questions, please contact your supplier or your Endress+Hauser sales
centre responsible (see back page of these Operating Instructions).
2.3 Certificates and approvals
Test certificate 3.1B acc. to EN 10204 on demand.
C07-CPA474xx-18-07-00-en-001.eps
Fig. 1: Example of a nameplate
ENDRESS+HAUSER
CLEANFIT P CPA 474
order code:
serial no.:
spec.
pressure: PN=10bar T=130°C
CPA474-E2A2B1H4
2 12355 05B56

CleanFit P CPA 474 Identification
Endress+Hauser 7
2.4 Product structure
Assembly drive, ball valve
A Assembly and ball valve manual (convertable to pneumatic)
B Assembly: pneumatic, ball valve: manual, without limit position switches (retrofittable)
C Assembly: pneumatic, ball valve: manual, with pneumatic limit position switches
D Assembly: pneumatic, ball valve: manual, with electric limit position switches (Ex and Non-Ex)
E Assembly + ball valve: pneumatic, with pneumatic limit position switches
F Assembly + ball valve: pneumatic, with electric limit position switches (Ex and Non-Ex)
Y Special version acc. to customers specification
Assembly version
1 Standard version: max. 80 °C (176 °F), max. 6 bar (87 psi), with scraper ring (PA cylinder)
2 Heavy duty version: max. 130 °C (266 °F), max. 10 bar (145 psi), with scraper ring (SS cylinder)
3 Standard version: max. 80 °C (176 °F), max. 6 bar (87 psi), without scraper ring, i.e. the rinse chamber
is not sealed off the medium! (PA cylinder)
4 Heavy duty version: max. 130 °C (266 °F), max. 10 bar (145 psi), without scraper ring, i.e. the rinse
chamber is not sealed off the medium! (SS cylinder)
9 Special version acc. to customers specification
Electrode type
A For gel electrodes and pH ISFET sensors with Pg 13.5
B For liquid KCl electrodes and ISFET sensors with Pg 13.5 and hose connection head (type ESS)
Y Special version acc. to customers specification
Immersion depth
1 Short version up to 71 mm (2.8 inch) with PA cylinder
(possible sensor lengths: type A = 225 mm (8.9 inch), type B = 425 mm (16.7 inch))
Assembly versions 1 and 3 only!
2 Short version up to 71 mm (2.8 inch) with stainless steel 1.4404 (AISI 316L) cylinder
(possible sensor lengths: type A = 225 mm (8.9 inch), type B = 425 mm (16.7 inch))
Assembly versions 2 and 4 only!
3 Long version up to 207 mm (8.15 inch) with PA cylinder
(possible sensor lengths: type A = 360 mm (14.2 inch))
Assembly versions 1 and 3 only!
4 Long version up to 207 mm (8.15 inch) with stainless steel 1.4404 (AISI 316L) cylinder
(possible sensor lengths: type A = 360 mm (14.2 inch))
Assembly versions 2 and 4 only!
9 Special version acc. to customers specification
Assembly material (in contact with medium)
A Sensor holder: PP, ball valve: PP (max. 80°C (176 °F))
B Sensor holder: PEEK, ball valve: PVDF (max. 130°C (266 °F))
C Sensor holder: PVDF, ball valve: PVDF (max. 130°C (266 °F))
Y Special version acc. to customers specification
Seal material (in contact with medium)
1 EPDM (for food applications preferred)
2 FPM (Viton®, for process applications preferred)
3 Perfluoroelastomer
9 Special version acc. to customers specification
Process connection
D Thread adapter nut DN 50 (for flow assembly CPA240), immersion depth 1,2 only
G Flange DN 50, PN 16
H Flange ANSI 2", 150 lbs
Y Special version acc. to customers specification
Optional equipment
3 With pneumatic inlet/outlet safety seal
(2 x G ¼ internal thread /PVDF safety plug)
4 With pneumatic inlet/outlet safety seal
(2 x NPT ¼" internal thread / PVDF safety plug)
5 With manual inlet/outlet safety seal
(2 x G ¼ internal thread / PVDF safety plug)
6 With manual inlet/outlet safety seal
(2 x NPT ¼" internal thread / PVDF safety plug)
7 With rinse connection sockets, 2 x G ¼ internal thread (version 1, 2 only!)
(with PVDF safety plug)
8 With rinse connection sockets 2 x NPT ¼" internal thread (version 1, 2 only!)
(with PVDF safety plug)
9 Special version acc. to customers specification
CPA 474- complete order code

Installation CleanFit P CPA 474
8Endress+Hauser
3Installation
3.1 Incoming acceptance, transport, storage
•Make sure the packaging is undamaged!
Inform the supplier about damage to the packaging.
Keep the damaged packaging until the matter has been settled.
•Make sure the contents are undamaged!
Inform the supplier about damage to the delivery contents.
Keep the damaged products until the matter has been settled.
•Check that the scope of delivery is complete and agrees with your order and the
shipping documents.
•The packaging material used to store or to transport the product must provide shock
protection and humidity protection. The original packaging offers the best protection.
Also, keep to the approved ambient conditions (see "Technical data").
•If you have any questions, please contact your supplier or your Endress+Hauser
sales centre responsible (see back page of these Operating Instructions).
3.2 Installation conditions
3.2.1 Notes on installation
The assembly is designed for installation on tanks and pipes. Suitable nozzles must be
available for this.
!
Note!
•When using standard glass electrodes, only installation positions are permitted in
which the middle axis of the assembly lies at least at an angle of 15° from the
horizontal (see diagram). Otherwise, there will not be a reliable contact between the
inner side of the pH membrane and the inner terminal leads via the electrolytes.
•When using an ISFET TopHit H sensor, there are, in principle, no restrictions for the
installation position. An installation angle of 0 to 180° is, however, recommended.
C07-CPA474xx-11-07-00-xx-001.EPS
Fig. 2: Permitted orientations depending on the sensor used
"
Caution!
•For all assemblies with stainless steel pressure cylinders, we recommend to use a
flanged version when installing with inclined orientation. Otherwise, the weight of the
assembly could affect the safety of the process connection.
•Avoid a siphon effect1at the rinse chamber outlet when installing with inclined
orientation. The inlet to the rinse chamber must be from below.
A Glass electrode: Installation angle of at least 15° from the horizontal
B IsFET-pH sensor TopHit: No restrictions, recommended 0 ... 180°
15° 15°
AB

CleanFit P CPA 474 Installation
Endress+Hauser 9
!
Note!
•The minimum diameter for direct installation in pipework is DN 50. This diameter is
required so that the assembly has sufficient distance from the pipe wall when brought
into the "Measuring" position.
•Use the CPA 240 flow assembly to install the assembly in smaller pipe diameters (see
Accessories).
•When designing the installation nozzle, please observe the total immersion depth in
operation (sensor holder not inserted). Ensure that the sensor is always immersed in
the medium in operation (see "Dimensions").
3.2.2 Dimensions
1) Siphon effect: line emptied by vacuum
C07-CPA474xx-06-07-00-en-003.eps
Fig. 3: Assembly version: pneumatic, short,
for KCl sensors, thread adapter nut
With thread adapter nut, there is only a short
version!
** version with electric limit position switches
C07-CPA474xx-06-07-00-en-004.eps
Fig. 4: Assembly version: manual, long,
for gel sensors, flange
in brackets: short version
A Length when extended
B Required mounting clearance
270 / 10.63
18 /
0.71
55 / 2.17
25 /
0.98
A: 590 / 23.23 B: 790 / 31.10
165 (220**) / 6.50 (8.66**)
65 / 2.56
mm / inch
Ø 76 / 2.99
Ø 19 / 0.75
55 /
2.17 395 / 15.55
A: 865 / 34.06 B: 1065 / 41.93
7 / 0.28
mm / inch
207 / 8.15 (71 / 2.80)
125 / 4.92

Installation CleanFit P CPA 474
10 Endress+Hauser
3.2.3 Process connections
C07-CPA474xx-04-07-00-en-001.eps
Fig. 5: Process connections CPA 474 (dimensions in brackets: ANSI flange)
D Thread adapter nut DN 50 (for flow assembly CPA 240, short version only!)
G/H Flange DN 50 / PN 16 and flange ANSI 2" / 150 lbs
3.2.4 Scraper ring
The assembly is optionally supplied with a scraper ring on the process side of the ball
valve.
This is especially recommended in the following cases:
•If the rinse chamber, otherwise open to the process, should be protected during
operation.
•If material sticking to the electrode holder (caused by the medium)1should be
scraped off when moving to service mode.
"
Caution!
The rinse chamber and the internal volume of the ball valve are always filled with
medium. At least in the short period between opening the ball valve and moving the
electrode holder out of the service position there is open contact to the medium.
In that period the full process pressure is on the rinse connections.
G/H
D
mm / inch 125/4.92 (121/4.76)
165/6.50 (152/6.0)
Rd 78x1/6
1) fibres, lime etc.

CleanFit P CPA 474 Installation
Endress+Hauser 11
3.3 Installation instructions
3.3.1 Measuring system
C07-CPA473xx-14-07-00-xx-001
Fig. 6: Fully automatic measuring system (example)
A For information on function and connection of the pneumatics and the limit position switches to the
assembly, please refer to the related chapters of the Operating Instructions.
1
7
8
Assembly CleanFit P
Special measuring cable, e.g. CPK 9, CPK 12
Rinse block CPR 40 (optionally)
a
b
c
Electric line
Compressed air line
Water / cleaning agent / buffer
TopCal S CPC 300:1
1) Fully automatic calibration and cleaning system
To be supplied by customer:
2
3
4
5
6
Transmitter Mycom S CPM 153
Control unit CPG 300
Vessel for cleaning agents and buffer solutions
Multi hose
Supply / control cable
9
10
11
12
13
Power supply for Mycom S CPM 153
Power supply for CPG 300
Compressed air
Water supply
Steam / water / cleaning agent (optionally)
MYCOMS CPM 153
MYCOMS CPM 153
ENDRESS+HAUSER
ENDRESS+HAUSER
MEAS CAL
DIAG PARAM
PARAM
?
Messen Hold
Aus
Wahl
pH 7.00
ATC
Temperatur25.0°C
Endress+Hauser
CPG 300
10
11
12
12
3
9
6
13
5
4
8
a
b
c
7
A

Installation CleanFit P CPA 474
12 Endress+Hauser
3.3.2 Installing the assembly into the process
!
Note!
In case of an assembly with electric limit position switches, M4 (pneumatic limit position
switch) is replaced by an electric limit position switch. Additionally a second electric
limit position switch on the housing of the ball valve drive (C) detects the position of the
ball valve. This electric limit position switch functionally replaces S4.
Move the assembly into the "Service" position (electrode holder inserted in the
assembly) and secure the assembly to the tank or the piping using your selected
process connection.
!
Note!
Depending on the process connection, please observe the following:
•Check the flange seal between the flanges before installing the assembly.
•The thread adapter nut of thread G 1¼ does not function as a seal. Therefore, simply
tighten the thread adapter nut by hand.
3.3.3 Compressed air connection
Pneumatic connections
The assembly is operated with an air pressure of 4 to 8 bar (58 to 116 psi). The air must
be filtered (40 µm) and be free of water and oil. There is no continuous air consumption.
The air lines must have a minimum nominal diameter of 4 mm (0.16 inch).
"
Caution!
There must be a pressure-reducing valve upstream if the air pressure can increase to
above 8 bar (116 psi) (including any short pressure surges).
We recommend you also use a pneumatic throttle for lower pressures. This results in a
smoother assembly operation. E+H offers such a throttle as an accessory (see chapter
"Accessories").
C07-CPA474xx-15-07-00-xx-005.eps
Fig. 7: Pneumatics and limit position switches
C07-CPA473xx-15-07-00-xx-007.eps
Fig. 8: Pneumatic connection block
M =
S =
M1
M2
M3
M4
S1
S2
S3
S4
A
B
C
D
Measuring
Service
Pneumatics "Open ball valve"
Limit position switch "Ball valve open" 1
Pneumatics "Assembly measuring"
Limit position switch "Assembly measuring" 2
Pneumatics "Assembly service"
Limit position switch "Assembly service" 1
Pneumatics "Close ball valve"
Limit position switch "Ball valve closed" 1
Assembly housing (cylinder)
Pneumatic terminal block
Ball valve drive
Rinse inlet / outlet
1) pneumatic limit position switch
2) pneumatic or electric limit position switch acc. to assembly version (see product structure)
M3
S1
S2
M4
D
A
C
B
M1
M2
S3
S4

CleanFit P CPA 474 Installation
Endress+Hauser 13
Compressed air lines connection to the assembly
The assembly is delivered completely hosed-up (Fig. 9, Fig. 10).
!
Note!
For the functions and an overview of the hoses, please read the "Operation"/
"Pneumatic operation" chapter.
All you have to do is connect the compressed air for pneumatic operation of the ball
valve and the outputs for pneumatic feedback signal to the pneumatic terminal block.
There is a sticker on the pneumatic terminal block which displays the compressed air
inputs and outputs and their allocation (Fig. 11). There are also identical digits engraved
directly on the corresponding input (+output) on the terminal block.
Limit position switches
The pneumatic limit position switches serve as control elements and determine the
sequence of the individual steps.
C07-CPA473xx-15-07-00-xx-009.eps
Fig. 9: Hosing of version with pneumatic limit
position switches
A Assembly cylinder
B Pneumatics terminal block
C Ball valve drive
D Rinse chamber outlet safety seal
M1 Pneumatic connection "Open ball valve"
M2 Limit position switch "Ball valve open"
M3 Pneumatic connection "Assembly measuring"
C07-CPA473xx-15-07-00-xx-010.eps
Fig. 10: Hosing of version with electric limit
position switches
M4 Limit position switch "Assembly measuring"
S1 Pneumatic connection "Assembly service"
S2 Limit position switch "Assembly service"
S3 Pneumatic connection "Close ball valve"
S4 Pneumatic or electric limit position switch "Ball
valve closed"
S5 Electric limit position switch "Ball valve closed"
A
5
6
B
C
D *
2
1
2
1
1
2
1
2
S2
M4
S1
M3
M1 S3
M2
S4
* optional
3
4
A
5
6
B
C
D *
2
1
1
2
1
2
S2
M4
S1
M3
M1 S3
M2
S4
* optional
3
4
3
C
S5
C07-CPA473xx-11-07-00-xx-002.eps
Fig. 11: Sticker on pneumatic terminal block
3
4
5
6
"Assembly service" feedback signal
(Limit position switch"ball valve closed"
"Start service" compressed air input
(Pneumatics "close ball valve"
"Assembly measuring" feedback signal
(Limit position switch "ball valve open")
"Start measuring" compressed air input
(Pneumatics "open ball valve")
53
46

Installation CleanFit P CPA 474
14 Endress+Hauser
The following types of limit position switches are available depending on the order
version (product structure, "Assembly operation, ball valve"):
•"Pneumatic limit position switch" version: 4 pneumatic switches (see fig.)
•"Electric limit position switch" version: 3 pneumatic and 2 inductive switches (see fig.)
!
Note!
The position of the input resp. the output may be different from the figure. Please, refer
to the marks at the limit position switch: "1" is the input, "2" is the output.
3.3.4 Rinse water connection
Connect the rinse water pipe to the designated rinse nozzle. Both rinse nozzles on the
assembly are identical. Use one as an inlet and the other as an outlet.
Operate the rinse water connection of the assembly with a water pressure of 2 to
max. 6 bar (29 to 87 psi). In addition, install a non-return valve and a dirt trap (100 µm)
in the water supply line (at the inlet to the assembly).
"
Caution!
If it is possible for the water pressure to rise above 6 bar (87 psi, including any transient
pressure surges), install a pressure reducing valve upstream. Otherwise the assembly
may be damaged.
Besides water, other or additional cleaning solutions may be used in the rinse chamber.
Pay attention to the material resistance of the assembly and comply with the maximum
permitted temperatures and pressures.
Inlet / outlet safety seal
Optionally the assembly is supplied with a non-return valve on the inlet side of the rinse
chamber (inlet safety seal) and an outlet valve (pneumatic outlet safety seal) resp. a ball
valve (manual outlet safety seal, see product structure).
An outlet safety seal is definitely required if the rinse chamber does not remain sealed
with the drain plug1.
C07-CPA47xxx-00-07-06-en-001.eps
Fig. 13: Inlet / outlet safety seals for rinse chamber
A Pneumatic outlet safety seal
B Manual outlet safety seal
C Non-return valve (inlet safety seal)
Pneumatic: 3/2 way valve
Electric: inductive (NAMUR type)
C07-CPA471xx-04-07-08-xx-001.eps
Fig. 12: Limit position switches, left: pneumatic (1 = compressed air inlet, 2 = compressed air outlet)
right: electric (NAMUR)
2
1
1 / BN L+→
2 / BU L–→
1) also applies in "Measure" position
AB C
136 / 5.35 90 / 3.54 124 / 4.88
mm / inch

CleanFit P CPA 474 Installation
Endress+Hauser 15
Inlet safety seal (optionally)
The non-return valve prevents medium from penetrating from the rinse chamber into the
rinse water inlet.
Pneumatic outlet safety seal (optionally)
!
Note!
For an assembly with pneumatic outlet safety seal (outlet side of the rinse chamber) you
get the valve separately.
Manual outlet safety seal (optionally)
The manual safety seal is a ball valve made of PVDF. You have to drive it manually.
C07-CPA473xx-15-07-00-xx-006.eps
Fig. 14: Functional diagram of the pneumatic valve on the outlet side of the rinse chamber
A: Valve closed (no connection between rinse water and rinse chamber)
B: Valve open (rinse water can enter rinse chamber)
1
2
3
4
Compression spring
Compressed air input
Rinse water outlet
Rinse connection socket
5
a
b
Rinse water outlet
Rinse water
Compressed air
AB
1
2
3
4
a
b
a
a
5
1. Mount the delivered pneumatic outlet
safety seal to the outlet of the assembly
rinse chamber.
2. Connect the pressure hose 3
(feedback "Assembly service" from
limit position switch S4, Fig. 15) via a
T-piece (E) to the compressed air valve
input (s. fig. above, pos. 2).
You find the overview of the hose
connection in chapter "Compressed air
connection" and the functional principle of
the assembly in chapter "Operation" /
"Pneumatic operation".
C07-CPA473xx-15-07-00-xx-008.eps
Fig. 15: Pneumatic outlet safety seal connection
B Pneumatic connection block
C Ball valve drive
D Pneumatic outlet safety seal
E T-piece
3
D
B
E
S4
C

Installation CleanFit P CPA 474
16 Endress+Hauser
3.3.5 Sensor installation
#
Warning!
Make sure the ball valve is closed before beginning to install the sensor into the
assembly.
Gel sensors
"
Caution!
If turned in the opposite direction, the stop lock bolt does not engage. This could,
however, loosen the sensor holder. The reason for this is adhesions on the lower part of
the sensor holder. These can cause the sensor holder to get stuck, producing a
counterforce when unscrewing the sensor holder.
4. For manually driven assembly only:
Close the ball valve!
5. Remove the splash protection cap (Fig. 18, position 5) from the assembly.
6. Then loosen the retractable pipe (position 2) by turning it anticlockwise.
1. Remove the yellow protection cap of
the sensor.
Make sure the sensor shaft is fitted with
the O-ring and the thrust collar
(Fig. 16).
2. Moisten the sensor shaft before
installing the sensor.
3. Move the assembly into the "Service"
position (ball valve closed).
C07-CPSxxxxx-11-05-00-xx-001.eps
Fig. 16: Sensor installation
AO-ring
B Thrust collar
B
A
1. Pull the retractable pipe as far as
possible out of the assembly ("Service"
position).
2. Turn the stop lock bolt through 90° so
that the plastic grooves are located
above the recesses (Fig. 17, A).
3. Turn the retractable pipe clockwise
until the stop lock bolt engages (B).
C07-CPA47xxx-19-07-00-xx-001.eps
Fig. 17: Stop bolt
A Step 2,see left
BStep3
AB

CleanFit P CPA 474 Installation
Endress+Hauser 17
Sensor with liquid KCl electrolyte
1. Pull the retractable pipe as far as possible out of the assembly ("Service" position).
2. Turn the stop lock bolt through 90°, so that the plastic grooves are located above
the recesses.
3. Turn the retractable pipe clockwise until the stop lock bolt engages.
"
Caution!
If turned in the opposite direction, the stop lock bolt does not engage. This could,
however, loosen the sensor holder. The reason for this is adhesions on the lower part of
the sensor holder. These can cause the sensor holder to get stuck, producing a
counterforce when unscrewing the sensor holder.
4. For manually driven assembly only:
Close the ball valve!
5. Remove the splash protection cap (Fig. 19, position 6) and the KCl hood
(position 7) from the assembly.
6. Then slacken the retractable pipe by turning it anticlockwise.
7. Unscrew the tension sleeve (position 10).
8. Remove the sensor holder (position 9) from the retractable pipe.
7. Remove the dummy plug (position 3).
8. Screw the sensor or the electrode
(position 7) into the sensor holder by
hand.
9. Tighten the sensor using a socket
wrench (AF 17) by approx. ¼ turn.
10.Insert the measuring cable from the top
through the retractable pipe (pos. 2).
11.Plug the measuring cable into the
sensor plug-in head using the cable
plug (position 6) and tighten it by hand.
12.Screw the retractable pipe back onto
the pressure cylinder (clockwise, by
hand).
13.Place the measuring cable in the
splash protection cap and place it on
the retractable pipe.
14.Push the PML connector onto the PML
connection (PML = potential matching
line, position 1).
15.Release the stop lock bolt catch by
pulling it out and turning it by 90°.
Remove the sensor in the reverse
sequence of operations.
C07-CPA473xx-09-07-06-xx-002.eps
Fig. 18: Sensor installation
1 PML connection
2 Retractable pipe
3 Dummy plug (a=inserted and b=not inserted)
4 Stop lock bolt
5 Splash protection cap
6 Measuring cable with cable plug
7 Sensor or electrode
1
2
3
4
6
5
7
a
b

Installation CleanFit P CPA 474
18 Endress+Hauser
3.4 Post-installation check
•After installation, check that all connections are firmly in position and leak-tight.
•Ensure that the hoses cannot be removed without force.
•Check all hoses for damage.
9. Screw the sensor into the sensor holder
by hand.
10.Tighten the sensor using a socket
wrench (AF 17) by approx. ¼ turn.
11.Push the sensor holder with the sensor
into the retractable pipe.
12.Insert the tension sleeve from the
bottom into the retractable pipe and
screw it to the sensor holder.
13.Screw the retractable pipe with the
sensor onto the assembly (by hand).
14.Insert the measuring cable from the top
through the protective tube and the KCl
hood (position 7).
15.Screw the measuring cable onto the
sensor plug-in head and tighten it by
hand.
16.Push the PML connector onto the PML
connection (PML = potential matching
line, position 2).
17.Insert the electrolyte supply tube
(position 1) through the KCl hood and
connect it to the electrolyte connection
of the sensor.
18.Attach the KCl hood to the retractable
pipe.
19.Place the measuring cable in the
splash protection cap and place it on
the protective tube of the KCl hood.
20.Release the stop lock bolt catch (pull it
out and turn it by 90°).
Remove the sensor in the reverse
sequence of operations.
C07-CPA473xx-09-07-06-xx-003.eps
Fig. 19: Liquid KCl electrolyte sensor installation
1 Liquid KCl supply tube
2 PML connection
3 Retractable pipe
4 Dummy plug (a = inserted, b = not inserted)
5 Stop lock bolt
6 Splash protection cap
7 KCl hood
8 Sensor with liquid KCl connection
9 Sensor holder
10 Tension sleeve
1
2
3
4
7
8
9
a
b
5
6
10

CleanFit P CPA 474 Operation
Endress+Hauser 19
4 Operation
4.1 First commissioning
Before the first commissioning, make sure of the following items:
•all seals are correctly seated (on the assembly and process connection)
•the sensor is correctly installed and connected
•the water supply line is correctly connected to the rinse connections (if fitted)
•the limit position switches (according to assembly version) are correctly connected
#
Warning!
Danger of squirting medium.
Before applying compressed air to the pneumatic assembly, make sure the
connections are correctly fitted with either rinsing hoses or dummy plugs. Otherwise the
assembly may not be put into the process!
4.2 Operating elements
Use the stop lock bolt to lock or release the retractable pipe (Fig. 20, Fig. 21).
When using manually operated assemblies, the retractable pipe can be locked in both
the "Measuring" position and the "Service" position. When using pneumatically operated
assemblies, this can only be done in the "Service" position.
Releasing the stop lock bolt:
1. Pull the bolt out.
2. Turn the bolt by 90° so that the plastic grooves rest on the metal edge.
Locking the stop lock bolt:
3. Turn the stop lock bolt through 90° so that the plastic grooves are located above
the recesses.
4. When the retractable pipe is turned clockwise, the bolt engages.
C07-CPA47xxx-19-07-01-xx-002.eps
Fig. 20: Releasing the stop lock bolt
C07-CPA47xxx-19-07-01-xx-003.eps
Fig. 21: Locking the stop lock bolt
12
34

Operation CleanFit P CPA 474
20 Endress+Hauser
4.3 Manual operation
Moving the assembly from the "Service" position to the "Measuring" position
1. Open the ball valve.
2. Release the stop lock bolt catch.
3. Push the lifting tube so that the sensor holder is inserted fully into the process.
4. Lock the sensor holder with the stop lock bolt. This prevents the lifting tube from
returning inadvertently into the "Service" position.
#
Warning!
Risk of injury!
Always lock the sensor holder. Otherwise, the lifting tube may exit uncontrolled as a
result of the process pressure and injure somebody.
Moving the assembly from the "Measuring" position to the "Service" position
1. Release the stop lock bolt catch.
2. Pull the lifting tube out as far as possible ("Service" position).
3. Close the ball valve.
4. Lock the sensor holder with the stop lock bolt.
5. Complete the necessary service tasks.
4.4 Pneumatic operation
!
Note!
The next two chapters describe the principle of assembly moving. The figures show
only the details necessary to explain this principle.
Please, refer to the chapter "Installation" / "Installation instructions" and the
figures there for assembly hosing and installation into the process!
4.4.1 Moving from "Service" position into "Measuring" position
C07-CPA473xx-15-07-00-xx-001.EPS
Fig. 22: Move to "Measuring" position with version
with pneumatic limit position switches
C07-CPA473xx-15-07-00-xx-003.eps
Fig. 23: Move to "Measuring" position with version
with electric limit position switches
1
2
5
6
Pneumatic input, limit position switch
Pneumatic output, limit position switch
Feedback signal "Assembly measuring"
Compressed air input "Start measuring"
A
B
C
D
Assembly cylinder
Pneumatics connection block
Ball valve drive
Outlet safety seal for rinse chamber
A
5
6
B
C
D *
2
1
2
1
1
2
1
2
S2
M4
S1
M3
M1 S3
M2
S4
* optional
A
5
6
B
C
D *
2
1
1
2
1
2
S2
M4
S1
M3
M1 S3
M2
S4
S5
* optional