Hach POLYMETRON 8544 Bedienungsanleitung

DOC024.98.93128

POLYMETRON Model 8544

12/2016, Edition 1

User Manual

Manuel d'utilisation

English..............................................................................................................................3

Français......................................................................................................................... 18

Table of contents

Specifications on page 3 Maintenance on page 16

General information on page 4 Troubleshooting on page 16

Installation on page 8 Replacement parts and accessories on page 16

Operation on page 16

Specifications

Specifications are subject to change without notice.

Table 1 General specifications

Specification Details

Operating temperature –10 to 50 °C (14 to 122 °F)

Storage temperature –5 to 40 °C (23 to 104 °F)

Relative humidity 20 to 80%, non-condensing

Altitude 2000 m (6562 ft) maximum

Overvoltage category 2

Pollution degree 2

Power requirements 24 VAC, 110–240 VAC, 50–60 Hz, 10 VA

CE compliance EN61326-1: EMC Directive

EN61010-1: LVD Directive

Warranty 1 year (EU: 2 years)

Table 2 Specifications—Air or water electrode cleaning system

Specification Details

Dimensions (W x H x D) 55 x 100 x 40 mm (9.8 x 13.8 x 5.9 in.)

Weight Approximately 0.4 kg (9.9 lbs)

Cleaning system Pressure: 0.5 to 10 bars (7.25 to 145 psi); temperature 70 °C (158 °F) maximum; flow:

400 to 4000 L/h

Environmental rating IP 65

Materials Enclosure material: Brass (MS); seal material: Fluoroelastomer (FKM), etylene

propylene diene monomer rubber (EPDM) and nitrile rubber (NBR); tubing:

Polyethylene (PE)

Table 3 Specifications—Chemical electrode cleaning system

Specification Details

Dimensions (W x H x D) 250 x 350 x 150 mm (9.8 x 13.8 x 5.9 in.)

Weight Approximately 4.5 kg (9.9 lbs)

Cleaning system Chemical reagent: air supply pressure 4 to 8 bar (58 to 116 psi); volume of reagent

supplied in each cycle: ± 10 mL

Suction height 2 m (6.5 ft) maximum

English 3

Table 3 Specifications—Chemical electrode cleaning system (continued)

Specification Details

Environmental rating IP 65

Materials Body material: Glass fiber and reinforced polyester; tubing: Polyvinyl chloride (PVC)

and PE

General information

In no event will the manufacturer be liable for direct, indirect, special, incidental or consequential

damages resulting from any defect or omission in this manual. The manufacturer reserves the right to

make changes in this manual and the products it describes at any time, without notice or obligation.

Revised editions are found on the manufacturer’s website.

Safety information

N O T I C E

The manufacturer is not responsible for any damages due to misapplication or misuse of this product including,

without limitation, direct, incidental and consequential damages, and disclaims such damages to the full extent

permitted under applicable law. The user is solely responsible to identify critical application risks and install

appropriate mechanisms to protect processes during a possible equipment malfunction.

Please read this entire manual before unpacking, setting up or operating this equipment. Pay

attention to all danger and caution statements. Failure to do so could result in serious injury to the

operator or damage to the equipment.

Make sure that the protection provided by this equipment is not impaired. Do not use or install this

equipment in any manner other than that specified in this manual.

Use of hazard information

D A N G E R

Indicates a potentially or imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING

Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious

injury.

CAUTION

Indicates a potentially hazardous situation that may result in minor or moderate injury.

N O T I C E

Indicates a situation which, if not avoided, may cause damage to the instrument. Information that requires special

emphasis.

Precautionary labels

Read all labels and tags attached to the instrument. Personal injury or damage to the instrument

could occur if not observed. A symbol on the instrument is referenced in the manual with a

precautionary statement.

This is the safety alert symbol. Obey all safety messages that follow this symbol to avoid potential

injury. If on the instrument, refer to the instruction manual for operation or safety information.

This symbol indicates that a risk of electrical shock and/or electrocution exists.

4 English

This symbol indicates that the marked item can be hot and should not be touched without care.

This symbol identifies the presence of a strong corrosive or other hazardous substance and a risk of

chemical harm. Only individuals qualified and trained to work with chemicals should handle chemicals

or perform maintenance on chemical delivery systems associated with the equipment.

This symbol indicates the need for protective eye wear.

This symbol indicates the need for protective hand wear.

This symbol indicates that the marked item requires a protective earth connection. If the instrument is

not supplied with a ground plug on a cord, make the protective earth connection to the protective

conductor terminal.

Electrical equipment marked with this symbol may not be disposed of in European domestic or public

disposal systems. Return old or end-of-life equipment to the manufacturer for disposal at no charge to

the user.

Product overview

The POLYMETRON model 8544 is a cleaning system for electrodes. There are two models:

•Air or water electrode cleaning system: Models 8544.1 (220 V), 8544.2 (110 V) and

8544.3 (24 V). An electrovalve supplies air or water to the sensor tip. Refer to Figure 1.

•Chemical electrode cleaning system: Models 8544.4 (220 V), 8544.5 (110 V) and 8544.6 (24 V).

A twin chamber hose pump uses an air–instrument to supply a measured volume of a cleaning

fluid with a nozzle that is installed immediately below the sensor tip. Refer to Figure 2.

The manufacturer recommends that a junction box is used to connect the POLYMETRON

9500 series or SC200 controller to the system as shown in Figure 1 and Figure 2. Then, the cleaning

interval is configured at the controller. Refer to Replacement parts and accessories on page 16 for

ordering information.

English 5

Figure 1 Air or water electrode cleaning system

1 Junction box (optional) 4 Air or water inlet 7 Nozzle for 8340/44 probes

2 Controller (optional) 5 Cleaning module (electrovalve) 8 Nozzle for 8350 probes

3 Electrovalve connector 6 Brass adapter, air or water outlet

6 English

Figure 2 Chemical electrode cleaning system

1 Junction box (optional) 6 Valve 11 Cleaning solution outlet line

2 Controller (optional) 7 Hose pump 12 Cleaning solution intlet line

3 Electrovalve 8 Nozzle for 8350 probes 13 Power line

4 Manual starting button 9 Nozzle for 8340/44 probes 14 Air inlet

5 Cleaning module 10 Cleaning solution container 15 Purge and silencer

Product components

Make sure that all components have been received. Refer to Figure 3 and Figure 4. If any items are

missing or damaged, contact the manufacturer or a sales representative immediately.

Figure 3 Product components—Air or water system

1 Cleaning module 2 Tubing

English 7

Figure 4 Product components—Chemical system

1 Cleaning module 2 Enclosure key 3 Tubing

Installation

WARNING

Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the

document.

Installation guidelines

N O T I C E

Make sure to install the instrument vertically. Make sure that the distance between the instruments and the

cleaning container is less than 2 m (6.6 ft).

Make sure that hazardous fluids or fluids that can produce hazardous vapors are handled safely.

These fluids must be handled in accordance with local regulatory agency requirements on

permissible exposure limits.

Install the instrument:

• In a location with a flat surface to prevent the unit from movement

• In a location with minimum mechanical vibrations and electronic noise

• In a location where the power switch and power cord are visible and easily accessible

• In a location where there is sufficient clearance around it to make plumbing and electrical

connections

Keep the sample tubing as short as possible to minimize lag time. Keep the instrument away from a

heat source.

8 English

Electrical installation

D A N G E R

Electrocution hazard. Always remove power to the instrument before making electrical connections.

Wiring for power

D A N G E R

Electrocution hazard. Protective Earth Ground (PE) connection is required.

D A N G E R

Electrical shock and fire hazards. Make sure to identify the local disconnect clearly for the conduit

installation.

WARNING

Potential Electrocution Hazard. If this equipment is used outdoors or in potentially wet locations, a

Ground Fault Interrupt device must be used for connecting the equipment to its mains power source.

WARNING

Electrical shock and fire hazards. Make sure that the user-supplied power cord and non‐locking plug

meet the applicable country code requirements.

N O T I C E

Install the device in a location and position that gives easy access to the disconnect device and its operation.

Supply power to the instrument with conduit or a power cable. Make sure that a circuit breaker with

sufficient current capacity is installed in the power line. The circuit breaker size is based on the wire

gauge used for installation.

For installation with conduit:

• Install a local disconnect for the instrument within 3 m (10 ft) of the instrument. Put a label on the

disconnect that identifies it as the main disconnect device for the instrument.

• Make sure that the power and safety ground service drops for the instrument are 18–12 AWG and

the wire insulation is rated for 300 VAC or higher.

• Connect equipment in accordance with local, state or national electrical codes.

• Connect the conduit through a conduit hub that holds the conduit securely and seals the enclosure

when tightened.

• If metal conduit is used, make sure that the conduit hub is tightened so that the conduit hub

connects the metal conduit to safely ground.

For installation with a power cable, make sure that the power cable is:

• Less than 3 m (10 ft) in length

• Rated sufficient for the supply voltage and current. Refer to the requirements in Specifications

on page 3.

• Rated for at least 60 °C (140 °F) and applicable to the installation environment

• Not less than 18 AWG with applicable insulation colors for local code requirements

• A power cable with a three-prong plug (with ground connection) that is applicable to the supply

connection

English 9

• Connected through a cable gland (strain relief) that holds the power cable securely and seals the

enclosure when tightened

• Does not have a locking type device on the plug

Connect conduit or a power cord

Connect the instrument to power with conduit or a power cord. Refer to Wiring for power on page 9.

Make connections at the same terminals, regardless of the type of wire used. Put each wire into the

applicable terminal until the insulation is flush against the connector with no bare wire seen. Pull

lightly after insertion to make sure that there is a tight connection.

Connect air or water system

Connect the instrument to power with conduit or a power cord. Refer to Wiring for power on page 9.

Make connections at the same terminals, regardless of the type of wire used. Put each wire into the

applicable terminal until the insulation is flush against the connector with no bare wire seen. Pull

lightly after insertion to make sure that there is a tight connection.

1. Complete the steps shown in Figure 5.

2. Connect the live (L), neutral (N), and ground (G) wires to the electrovalve connector as shown in

Figure 6 and Table 4.

Figure 5 Electrical wiring connection—Air or water system

10 English

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