Endress+Hauser Cleanfit P CPA472D User manual

BA403C/07/en/05.06
71026598
Operating Instructions
Cleanfit P CPA472D
Retractable Process Assembly

Endress+Hauser
Brief overview
Here is how to use these Operating Instructions to commission your assembly quickly and safely:
Safety instructions
Page 4 ff.
Page 5
General safety instructions
Explanation of the warning symbols
You can find special instructions at the appropriate position in the chapter in question. The
significance is indicated with the icons Warning #, Caution "and Note !.
Æ
Installation
Page 8 ff.
Page 12 ff.
Page 16 ff.
Here you can find installation conditions such as the dimensions of the assembly.
Refer to these pages to connect limit position switches and rinse water lines.
Here you can find how to install a sensor in the assembly.
Æ
Operation
Page 21 In this chapter, you can find how to move a manually driven assembly from "Measuring" position
to "Service" position and vice versa.
Æ
Maintenance
Page 22 ff.
Page 23 ff.
Page 25 ff.
Page 29 ff.
For normal operation of the assembly, it is absolutely essential to carry out maintenance tasks on
a regular basis, such as sensor or assembly cleaning.
Individual parts are subject to normal wear and tear. Here you can find out how to replace such
parts.
On the given pages you can find the accessories for the assembly.
Here you can find an overview of the spare parts which can be delivered as well as an overview
of the assembly parts.
Æ
Technical data
Page 10 ff.
Page 36 ff.
Dimensions
Environment and process, weight, materials etc.
Æ
Æ
Index
Page 38 You can find important terms and keywords on the individual sections here. Use the keyword
index to find the information you need quickly and efficiently.

Cleanfit P CPA472D
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 Product structure . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Installation . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Incoming acceptance, transport, storage . . . . . . . . . . 8
3.2 Installation conditions . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4 Sensor installation . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.5 Post-installation check . . . . . . . . . . . . . . . . . . . . . . 19
4 Operation . . . . . . . . . . . . . . . . . . . . . . 20
4.1 First commissioning . . . . . . . . . . . . . . . . . . . . . . . . 20
4.2 Operating elements . . . . . . . . . . . . . . . . . . . . . . . . 20
4.3 Manual operation . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.4 Pneumatic operation . . . . . . . . . . . . . . . . . . . . . . . 21
5 Maintenance. . . . . . . . . . . . . . . . . . . . 22
5.1 Cleaning the assembly . . . . . . . . . . . . . . . . . . . . . . 22
5.2 Cleaning the sensor . . . . . . . . . . . . . . . . . . . . . . . . 22
5.3 Cleaning agents . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.4 Replacing seals . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6 Accessories. . . . . . . . . . . . . . . . . . . . . 25
6.1 Installation material for rinse connection . . . . . . . . 25
6.2 Flow assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3 Installation seal for flow assembly . . . . . . . . . . . . . 25
6.4 Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.5 Protection cover . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.6 Limit position switches . . . . . . . . . . . . . . . . . . . . . 26
6.7 Pneumatic throttle . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.8 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.9 Buffer solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.10 Measuring cables . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.11 Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.12 Measuring, cleaning and calibration systems . . . . . 28
7 Trouble-shooting . . . . . . . . . . . . . . . . 28
7.1 Replacing damaged parts . . . . . . . . . . . . . . . . . . . . 28
7.2 Spare part kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.3 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8 Technical data . . . . . . . . . . . . . . . . . . . 36
8.1 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.2 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.3 Mechanical construction . . . . . . . . . . . . . . . . . . . . 37
Index . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Safety instructions Cleanfit P CPA472D
4Endress+Hauser
1 Safety instructions
1.1 Designated use
The manually or pneumatically operated retractable assembly Cleanfit P CPA472D is designed for
installing pH/redox sensors in tanks and pipes.
Its mechanical design permits its use in pressurized 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, commissioning, operation and maintenance of the measuring system must only be
carried out by trained technical personnel.
The technical personnel must be authorized for the specified activities by the system operator.
• Electrical connection must only be carried out by a certified electrician.
• 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 authorized 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 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 sales center responsible.
Please use the original packaging, if possible.
Please enclose the completed "Declaration of contamination" (copy the second last page of these
Operating Instructions) with the packaging and the transportation documents.
No repair without completed "Declaration of contamination"!

Cleanfit P CPA472D 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 CPA472D
6Endress+Hauser
2 Identification
2.1 Nameplate
You can identify the assembly version by the order code on the nameplate. Please compare this code
with your order.
For possible assembly versions and the resulting order codes see 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 sales center responsible.
a0006134
Fig. 1: Example of a nameplate
CPA472D
spec.:
pressure: PN=10bar (20 °C) T=140°C
order code: CPA472D-A1A2B2D1
serial no.: 2 10339 05A09

Cleanfit P CPA472D Identification
Endress+Hauser 7
2.3 Product structure
Drive type and limit contact switches
A Manual without limit contact switches
B Pneumatic without limit contact switches
C Pneumatic with 2 pneumatic limit contact switches
D Pneumatic with 2 electric Ex limit contact switches
E Pneumatic with 1 electric Ex limit contact switch
Assembly version
1 Service position
2 Service position + measuring position
Electrode type
A For gel electrodes / ISFET sensors, 225 mm
B For gel electrodes, 360 mm
C For liquid KCl electrodes, 360 mm
Immersion depth
1 max 148 mm (5.83")
2 max 280 mm (11.02")
Assembly material (in contact with medium)
B In contact with medium: PEEK
C In contact with medium: PVDF
D In contact with medium: PVDF, conductive
E In contact with medium: PVDF, electrode holder Hastelloy C4
F In contact with medium: Hastelloy C4
G In contact with medium: Titanium
H In contact with medium: Stainless steel 1.4571; 316Ti
Seal material (in contact with medium)
2FPMViton
®
3FFKMKALREZ
®
Process connection
D DN 50 flange (acc. to EN 1092), stainless steel
E DN 80 flange (acc. to EN 1092), stainless steel
F 2" ANSI flange, stainless steel
G Thread G1¼ internal (only with materials F/G/H)
Y Special version acc. to customer specification
Rinse connection
1 Without rinse connection
3 With rinse fitting 2 x G ¼ internal thread
4 With rinse fitting 2 x NPT ¼" internal thread
5 With rinse fitting 2 x pipe 8x60 mm Swagelok
CPA472D- complete order code

Installation Cleanfit P CPA472D
8Endress+Hauser
3 Installation
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 sales center responsible.
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.
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 sensor, there are, in principle, no restrictions for the installation
position. An installation angle of 0 to 180° is, however, recommended.
a0005327
Fig. 2: Installation angle
A Glass electrodes: minimum 15 ° to the horizontal
B ISFET sensors: recommended 0 ... 180 °, overhead possible
15° 15°
AB

Cleanfit P CPA472D Installation
Endress+Hauser 9
a0006094
Fig. 3: Installation examples with recommended installation angle (glass electrodes)
ATank
B Flow assembly DN 50/80
C Horizontal pipe minimum DN 80
D Ascending pipe minimum DN 80
"Caution!
• Avoid a siphon effect1) at the rinse chamber outlet when installing with inclined orientation. The
inlet to the rinse chamber must be from below.
!Note!
• The minimum diameter for direct installation in pipework is DN 80. This diameter is required so
that the assembly has sufficient distance from the pipe wall when brought into the "Measuring"
position.
• Use a flow assembly to install the assembly in smaller pipe diameters (see Accessories).
• When designing the installation nozzle, please take into account the total immersion depth in
operation (sensor holder not inserted). Ensure that the sensor is always immersed in the medium
during operation (see "Dimensions").
>15°
>15°
>15°
AB
CD
1) Siphon effect: line emptied by vacuum

Installation Cleanfit P CPA472D
10 Endress+Hauser
3.2.2 Dimensions
a0005878
Fig. 4: Assembly version: long, for gel sensors
A Length when extended
B Required mounting clearance
a0005876
Fig. 5: Assembly version: standard, for KCl sensors
A Length when extended
B Required mounting clearance
0.79
0.31
2.99
A: 810/31.9 B: 1010/39.8
mm/inch
Ø 20/
280/11.0
109/4.29
Ø8/
364/14.3
537/21.1
Ø 76/
0.79
0.31
mm/inch
2.99
2.68
A: 640/25.2 B: 840/33.1
Ø8/
109/4.29
Ø 20/
146/5.75
Ø 76/
Ø 68/
229/9.02
520/20.5

Cleanfit P CPA472D Installation
Endress+Hauser 11
3.2.3 Process connections
a0006067
Fig. 7: Process connections
1 Flange DN 50 / DN 80 / ANSI 2"
2InternalthreadG1¼
a0005877
Fig. 6: Assembly version: standard, for gel sensors
A Length when extended
B Required mounting clearance
0.79
0.31
2.99
A: 550/21.6 B: 750/29.5
mm/inch
Ø8/
Ø 76/
109/4.29
Ø 20/
146/5.75 229/9.02
402/15.8
A
C
BA
C
12
Connection A B C (standard) C (long)
DN 50 165/6.50 125/4.92 146/5.75 280/11.0
DN 80 200/7.87 160/6.30 146/5.75 280/11.0
ANSI 2" 152.4/6.00 120.7/4.75 146/5.75 280/11.0
G 1¼ 51/2.01 --- 156/6.14 290/11.4
Dimensions in mm/inch

Installation Cleanfit P CPA472D
12 Endress+Hauser
3.3 Installation
3.3.1 Measuring system
a0006077
Fig. 8: Measuring system with pneumatic control
1
2
3
4
5
6
7
8
pH/redox sensor
Assembly Cleanfit P CPA472D
Transmitter Mycom S CPM153
Special measuring cable
Communication and extension cables
Power supply Mycom
Power supply CPG310
Control unit CPG310
9
10
11
12
13
14
15
Canisters for cleaning and buffer solutions
Superheated steam/water/cleaning solutions
(optional)
Rinse block
Rinse water valve
Power/signal cable
Air hoses
Medium
123
8
9
10
11
13
14
15
MEAS
MEAS
CAL
DIAG PARAM
?
45
6
7
12

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Endress+Hauser 13
3.3.2 Installing the assembly into the process
!Note!
Before installing the assembly into the process check the seal between the flanges.
1. Move the assembly into the "Service" position (electrode holder inserted in the assembly).
2. Secure the assembly to the tank or the piping using your selected process connection.
3. Follow the instructions for compressed air and rinse water connection (if used) given in the
following chapters.
3.3.3 Pneumatic connection (optional)
Requirements:
• air pressure of 5 to 6 bar (72.5 to 87 psi)
• air must be filtered (40 µm) and be free of water and oil
• no continuous air consumption
• minimum nominal diameter of the air lines: 4 mm (0.16 ").
"Caution!
There must be a pressure-reducing valve upstream if the air pressure can increase to above
6 bar (87 psi) (including any short pressure surges).
We recommend you also use a pneumatic throttle for lower pressures. This results in a smoother
assembly operation. Endress+Hauser offers such a throttle as an accessory (see chapter
"Accessories").
a0005339
Fig. 9: Pneumatics and limit position switches
M =
S =
M1
M2
S1
S2
1
2
3
4
5
6
7
8
Measuring
Service
Pneumatics "Assembly measuring"
Limit position switch "Assembly measuring" 1)
Pneumatics "Assembly Service"
Limit position switch "Assembly Service" 1
(see chapter "Pneumatic operation")
Splash protection cap
Assembly housing (cylinder)
Seals, in contact with medium
Retractable pipe
Potential matching
Stop lock bolt
Rinse fitting Swagelok (optional)
Sensor holder (= sensor guide)
1) pneumatic or electric limit position switch depending on assembly version (see product structure)
1
2
3
4
5
6
7
7
8
M1
S1
S2
M2

Installation Cleanfit P CPA472D
14 Endress+Hauser
Limit position switch
!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 (in), "2" is the output (out).
Connection of the compressed air and pneumatic limit position switches
!Note!
Following, you find the connection of the compressed air lines to the assembly. The compressed air
supply and the tapping of the position feedback signals are described for Topcal S CPC310 resp.
Topclean S CPC30 as an example.
a0004480
Fig. 11: Pneumatic connections and pneumatic limit position switches (1=inlet, 2=outlet)
M1 Pneumatics "Assembly measuring"
M2 Position feedback signal "Assembly measuring"
S1 Pneumatics "Assembly service"
S2 Position feedback signal "Assembly service"
nTopcal/Topclean: hose no. 2
oTopcal/Topclean: hose no. 3
qTopcal/Topclean: hose no. 5
rTopcal/Topclean: hose no. 6
The pneumatic limit position switches serve as control elements and determine the sequence of the
individual steps.
1. Connect the compressed air supply line for "Assembly measuring" (Topcal/Topclean: hose
no. n) to the upper G 1/8 pneumatics connection (Fig. 11).
2. Also, connect the compressed air supply line no. nto the inlet (1) of the lower limit position
switch (M2, via T-piece). This limit position switch supplies the position feedback signal
"Assembly measuring".
3. When the "Measuring" position is reached, the air applied to the inlet M2 (1) is switched
through and can be tapped at the outlet M2 (2) (Topcal/ Topclean: connect hose qto the limit
position switch outlet).
Pneumatic: 3/2 way valve
Electric: inductive (NAMUR type)
a0002727
Fig. 10: Limit position switches, left: pneumatic (1 = compressed air inlet, 2 = compressed air outlet)
right: electric (NAMUR)
out (2)
out (2)
in (1)
in (1)
1/BN L+Õ
2/BU L–Õ
1
2
1
2
M1
S1
S2
M2
2
3
Topcal /
Topclean
Topcal /
Topclean
6
5

Cleanfit P CPA472D Installation
Endress+Hauser 15
4. Connect the compressed air supply line for "Assembly service" (Topcal/Topclean: hose no. o)
to the lower G 1/8 pneumatics connection.
5. Also, connect the compressed air supply line no. oto the inlet (1) of the upper limit position
switch (S2, via T-piece). This limit position switch supplies the position feedback signal
"Assembly service".
6. When the position "Service" is reached, the air applied to the inlet S2 (1) is switched through
and can be tapped at the outlet S2 (2) (Topcal/ Topclean: hose no. r).
Connection of the electric limit position switches
Like the pneumatic limit position switches, the electric limit position switches also serve as control
elements and determine the sequence of the individual steps.
Connect the NAMUR limit position switches to the corresponding terminals at the transmitter.
Please, refer to the Operating Instructions of the transmitter for the terminal numbers. The following
figure shows the electric limit position switch connection to the terminals 11 to 14 of the Topcal S
control unit, as an example.
3.3.4 Rinse water connection (optional)
The rinse chamber allows you to clean the electrode with water or cleaning solution with a pressure
of 2 to max. 6 bar (30 to max. 87 psi). When using water, you have to install a check valve and a
filter (100 µm) at the inlet side. When you operate the assembly with pneumatic actuation and use
a cleaning solution, you have to install the chemically resistant ON/OFF valve (see "Accessories").
Install an outlet valve at the outlet side of the rinse chamber (see "Accessories").
"Caution!
There must be a pressure-reducing valve (see "Accessories") upstream if the water pressure can
increase to above 6 bar (87 psi) (including any short pressure surges).
!Note!
Connect the rinse connections to the in-house facilities via ball valves. If you do not use the rinse
function, please leave the dummy plug installed.
a0004334
Fig. 12: Electric limit position switches to Topcal
A
B
Limit position switch "Assembly service"
Limit position switch "Assembly measuring"
+
+
11 12 13 14 A
B
–
–

Installation Cleanfit P CPA472D
16 Endress+Hauser
3.4 Sensor installation
3.4.1 Preparing sensor and assembly
"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.
1. Remove the protection cap from the sensor.
Make sure the sensor shaft is fitted with the
O-ring and the thrust collar (Fig. 13).
2. Moisten the sensor shaft before installing the
sensor.
3. Depending on the assembly version:
a. Manually driven assembly:
Pull the retractable pipe as far as possible
out of the assembly.
b. Pneumatically driven assembly:
Move the assembly into the "Service"
position.
4. Turn the stop lock bolt through 90° so that
the plastic grooves are located above the
recesses (Fig. 14, A).
5. Turn the retractable pipe clockwise until
the stop lock bolt engages (B).
a0006214
Fig. 13: Sensor installation
1 Thrust collar and O-ring
a0002738
Fig. 14: Stop bolt
1
AB

Cleanfit P CPA472D Installation
Endress+Hauser 17
3.4.2 Gel sensor installation
Remove the sensor in the reverse sequence of operations.
!Note!
In case of symmetrical pH measurement, you must push the PML connector onto the PML
connection (PML = potential matching line, position 1). Please, read the Operating Instructions of
the transmitter.
1. Remove the splash protection cap (Fig. 15,
pos. 1) from the assembly.
2. Take care that the surface of the retractable
pipe (pos. 3) is not damaged. The surface is a
seal face. Loosen the retractable pipe by
turning it counterclockwise.
3. Install the sensor (pos. 7) instead of the
dummy plug (pos. 4):
– first screw by hand
– then tighten the sensor by approx. ¼ turn
using an open end wrench (AF 17).
4. Insert the measuring cable (pos. 6) through
the retractable pipe :
– Fixed cable:
from the bottom through the retractable
pipe, from the sensor to the transmitter
– Plug-in head sensor:
from the top to the sensor head
5. Plug-in head sensor only:
Connect sensor and cable.
6. Screw the retractable pipe back onto the
electrode holder (pos. 5)(clockwise, by
hand).
7. Place the measuring cable in the splash
protection cap and place the cap on the
retractable pipe.
8. Put the PML plug onto the PML terminal
(PML = potential matching line, pos. 2)
a0006010
Fig. 15: Sensor installation
1 Splash protection cap
2 PML terminal (potential matching line)
3 Retractable pipe
4 Dummy plug
5 Electrode holder with guidance
6 Measuring cable with cable plug
7 Sensor or electrode
8 Stop lock bolt
1
2
3
4
5
8
6
7

Installation Cleanfit P CPA472D
18 Endress+Hauser
3.4.3 Sensor with liquid KCl electrolyte
!Note!
In case of symmetrical pH measurement, you must push the PML connector onto the PML
connection (PML = potential matching line, pos. 2). Please, read the Operating Instructions of the
transmitter.
1. Remove the splash protection cap (Fig. 16,
pos. 6) and the KCl hood (pos. 7) incl. the
protective tube from the assembly.
2. Then slacken the retractable pipe (pos. 3) by
turning it counterclockwise.
3. Screw in the sensor:
a. Unscrew the tension sleeve (pos. 12)
from the inner pipe (pos. 11) and pull the
inner pipe out of the retractable pipe.
b. Install the sensor (pos. 10) into the inner
pipe:
– first screw by hand
– then tighten the sensor by
approx. ¼ turn using an open end
wrench (AF 17).
c. Push the inner pipe with the sensor into
the retractable pipe and screw the
tension sleeve to the inner pipe.
4. Screw the retractable pipe with the sensor
onto the assembly (clockwise, by hand).
5. Insert the measuring cable through the
protective tube and the KCl hood (pos. 7):
– Fixed cable:
from the sensor upwards to the
transmitter
– Sensor with plug-in head:
from the top through the KCl hood to the
sensor
6. Plug-in head sensor only:
Connect sensor and cable.
7. Connect the electrolyte supply tube (pos. 1)
to the electrolyte connection of the sensor.
8. Affix the supplied tubing support (pos. 9) to
the electrolyte supply tube directly above the
electrolyte connection.
9. Attach the KCl hood to the retractable pipe.
Guide the electrolyte supply tube through
the lateral slot of the hood.
10. Place the measuring cable in the splash
protection cap and place the cap on the
protective tube of the KCl hood.
Remove the sensor in the reverse sequence of
operations.
a0006153
Fig. 16: Liquid KCl electrolyte sensor installation
1 Liquid KCl supply tube
2 PML connection
3 Retractable pipe
4 Dummy plug
5 Electrode holder with guidance
6 Splash protection cap
7 KCl hood
8 Plug-in head cable
9 Tubing support
10 Sensor with liquid KCl connection
11 Inner pipe
12 Tension sleeve
13 Stop lock bolt
1
2
3
4
7
8
11
12
10
9
6
5
13

Cleanfit P CPA472D Installation
Endress+Hauser 19
3.5 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.

Operation Cleanfit P CPA472D
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4Operation
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).
#Warning!
Danger of squirting medium.
Before applying the process pressure to the assembly, make sure the connections are correctly fitted.
If you use a manual outlet valve for the rinse chamber as a vent valve, ensure the counter side of
the rinse chamber is closed by the dummy plug. 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. 17, Fig. 18).
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.
a0002744
Fig. 17: Releasing the stop lock bolt
a0002745
Fig. 18: Locking the stop lock bolt
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