Endress+Hauser Flowfit CUA252 Operating Instructions Manual

Products Solutions Services

BA01281C/07/EN/01.13
71238090

Operating Instructions

Flowfit CUA252

Flow assembly for CUS52D turbidity sensor

Endress+Hauser

Document information

Warnings

The structure, signal words and safety colors of the signs comply with the specifications of
ANSI Z535.6 ("Product safety information in product manuals, instructions and other
collateral materials").

Symbols

Safety message structure Meaning

DANGER

!

Causes (/consequences)

Consequences if safety
message is not heeded

‣ Corrective action

This symbol alerts you to a dangerous situation.
Failure to avoid the situation will result in a fatal or serious
injury.

WARNING

!

Causes (/consequences)

Consequences if safety
message is not heeded

‣ Corrective action

This symbol alerts you to a dangerous situation.
Failure to avoid the situation can result in a fatal or serious
injury.

CAUTION

!

Causes (/consequences)

Consequences if safety
message is not heeded

‣ Corrective action

This symbol alerts you to a dangerous situation.
Failure to avoid this situation can result in minor or more
serious injuries.

NOTICE

Cause/situation

Consequences if safety
message is not heeded

‣ Action/note

This symbol alerts you to situations that can result in
damage to property and equipment.

Additional information, tips

Permitted or recommended

Forbidden or not recommended

Flowfit CUA252

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Table of contents

1 Basic safety instructions . . . . . . . . . . . . . 4

1.1 Requirements for personnel . . . . . . . . . . . . . . . . . . 4

1.2 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3 Occupational safety . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.4 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.5 Product safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Incoming acceptance and product

identification . . . . . . . . . . . . . . . . . . . . . . 6

2.1 Incoming acceptance . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Product identification . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4 Certificates and approvals . . . . . . . . . . . . . . . . . . . . 6

3 Installation . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Installation conditions . . . . . . . . . . . . . . . . . . . . . . . 8

3.3 Installation instructions . . . . . . . . . . . . . . . . . . . . 10

3.4 Sensor installation . . . . . . . . . . . . . . . . . . . . . . . . 13

3.5 Post-installation check . . . . . . . . . . . . . . . . . . . . . 13

4 Commissioning . . . . . . . . . . . . . . . . . . . . 14

5 Maintenance . . . . . . . . . . . . . . . . . . . . . . 15

5.1 Cleaning the assembly . . . . . . . . . . . . . . . . . . . . . 15

5.2 Cleaning the sensor . . . . . . . . . . . . . . . . . . . . . . . 15

5.3 Cleaning agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.4 Checking and replacing the seals . . . . . . . . . . . . 16

6 Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.1 Spare parts kits . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.2 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

7 Accessories . . . . . . . . . . . . . . . . . . . . . . . 18

7.1 Connection accessories . . . . . . . . . . . . . . . . . . . . . 18

7.2 Bubble trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7.3 Wall mounting kit . . . . . . . . . . . . . . . . . . . . . . . . . 19

8 Technical data . . . . . . . . . . . . . . . . . . . . 20

8.1 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8.2 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8.3 Mechanical construction . . . . . . . . . . . . . . . . . . . 21

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Basic safety instructions Flowfit CUA252

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1 Basic safety instructions

1.1 Requirements for personnel

‣ Installation, commissioning, operation and maintenance of the measuring system must

only be carried out by specially 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.

‣ Faults at the measuring point may only be rectified by authorized and specially trained

personnel.

Repairs not described in the enclosed Operating Instructions may only be carried out
directly at the manufacturer’s or by the service organization.

1.2 Designated use

The CUA252 flow assembly is designed for the installation of the CUS52D turbidity sensor.

Its main areas of application are:

• Final turbidity measurement in the outlet of waterworks

• Turbidity measurement in the inlet of waterworks

• Turbidity measurement at all stages of the process

• Turbidity measurement for filter monitoring and filter backwashing

• Turbidity measurement in drinking water networks

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 resulting from improper or non-designated use.

1.3 Occupational safety

As the user, you are responsible for complying with the following safety conditions:

• Explosion protection guidelines (only devices approved for use in explosion hazardous
areas)

• Installation instructions

• Local prevailing standards and regulations

Electromagnetic compatibility

This device has been tested for electromagnetic compatibility in accordance with the
applicable European standards for industrial applications.
The electromagnetic compatibility indicated only applies to a device that has been connected
in accordance with the instructions in these Operating Instructions.

1.4 Operational safety

‣ Before commissioning the entire measuring point, make sure all the connections are

correct. Ensure that electrical cables and hose connections are not damaged.

‣ Do not operate damaged products, and secure them against unintentional

commissioning. Label and identify the damaged product as defective.

‣ If faults cannot be rectified, you must take the products out of service and secure them

against unintentional commissioning.

Flowfit CUA252 Basic safety instructions

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1.5 Product safety

The product is designed to meet state-of-the-art safety requirements, has been tested and
left the factory in a condition in which it is safe to operate.
Relevant regulations and European standards have been observed.

Incoming acceptance and product identification Flowfit CUA252

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2 Incoming acceptance and product

identification

2.1 Incoming acceptance

• Make sure the packaging is undamaged!

• Notify the supplier of any damage to the packaging. Keep the damaged packaging until the
matter has been settled.

• Make sure the contents are not damaged!

• Notify the supplier of any damage to the delivery contents. Keep the damaged products
until the matter has been settled.

• Check the delivery to make sure nothing is missing. Compare it against the shipping
documents and your order.

• Pack the product for storage and transportation in such a way that it is reliably protected
against impact and moisture. The original packaging offers the best protection.
Furthermore, the permitted ambient conditions must also be observed (see "Technical
data").

• If you have any questions, contact your supplier or your local sales center.

2.2 Product identification

2.2.1 Nameplate

You can find the following information on the nameplate:

• Manufacturer details

•Order code

• Extended order code

• Serial number

• Operating conditions

• Safety information symbols

Compare the order code on the nameplate with your order.

2.2.2 Identifying the product

The order code and serial number of your device can be found in the following locations:

• On the nameplate

• In the shipping documents

To discover what product version you have, enter the order code on the nameplate into
the search screen at the following address:
www.products.endress.com/order-ident

2.3 Scope of delivery

The scope of delivery comprises:

• 1 Flowfit CUA252 flow assembly in the version ordered

• 1 Set of Operating Instructions BA01281C/07/EN

If you have any questions, contact your supplier or your local sales center.

2.4 Certificates and approvals

Declaration of Conformity

The product meets the requirements of the harmonized European standards.
As such, it complies with the legal specifications of the EC directives.
The manufacturer confirms successful testing of the product by affixing to it the 4 mark.

Flowfit CUA252 Installation

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3Installation

3.1 Dimensions

a0022255

Fig. 1: Dimensions in mm (inch)

Connections NPT ¾" Rp ¾ Glue-in port

D25

ANSI 2" Hose

D25

Hose
D12

G1¼

X mm(inch) 70 (2.76) 64 (2.52) 22 (0.87) 71 (2.80) 74 (2.91) 74 (2.91) 0

Y mm(inch) Ø 58(2.28) Ø 58(2.28) Ø 58(2.28) Ø 152 (5.98) Ø 58(2.28) Ø 58(2.28) Ø 58(2.28)

Installation Flowfit CUA252

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3.2 Installation conditions

To ensure that medium flows through the assembly in a bypass configuration, the pressure
p1 must be greater than the pressure p2. This is achieved by installing an orifice plate in the
main pipe.

a0022258

Fig. 2: Connection example involving a bypass and an orifice plate in the main pipe (supply from below)

p1

p2

p1 > p2