LC2250 Level Controller Installation and Maintenance Guide

Installation and Maintenance Guide

1. Safety information
2. Product and delivery information
3. System overview
4. Mechanical installation
5. Electrical installation
6. Commissioning

• Quick setup
• Full setup

7. Communication
8. Maintenance
9. Fault finding
10. Technical information

• Default settings

11. Appendix

• Data registers

12. Menu map

1. Safety information

The safe operation of this product can only be guaranteed if it is correctly installed, commissioned, used and maintained by qualified personnel in compliance with the operating instructions (see Section 1.11). General installation and safety guidelines for pipework and equipment must be observed during installation, together with the correct use of tools and safety equipment.

In the UK, IEE regulations (BS 7671) must be followed. In other areas, the applicable local regulations must be observed.

All wiring materials and procedures must comply with the relevant EN and IEC standards.

Warning

This product is designed and manufactured to withstand the forces encountered during normal use. If this product is not used as a boiler controller, or if installation does not comply with the instructions in this manual, the following may occur during product modification or repair:

• Injury or death;

• Damage to the product or property;

• Invalidation of the CE marking;

These instructions must always be kept in a safe place close to the boiler controller installation location.

Warning

This product complies with the Electromagnetic Compatibility Directive 2004/108/EC and meets all of its requirements.

The product is suitable for Class A environments, such as industrial environments. Comprehensive and detailed EMC testing has been carried out under UK reference number UK Supply BHLC2250 2008.

Under the following conditions, this product may be exposed to interference exceeding the immunity limits for heavy industrial environments:

• The product or its connecting cables are located close to a radio transmitter;
• The mains power supply is subject to interference. If interference is likely on the power supply, a mains protection device should be installed. The protection device should provide filtering, rectification, surge and peak protection.
• The use of mobile radios and mobile phones within approximately 1 m of the product or its connecting cables may cause interference. The actual safe distance may vary according to site conditions.

The product complies with the Low Voltage Directive (2006/95/EC) and meets the following standard:

• EN61010-1:2001, Safety requirements for electrical equipment for measurement, control and laboratory use;

When type-tested as a level controller, the product complies with the following standard:

• VdTÜV Water Control Equipment 100 (07: 2006).

Electrostatic discharge (ESD)

Appropriate precautions must be taken against electrostatic discharge to prevent damage to the product.

Level control and level limiting for steam boilers

The product must be selected, installed, operated and tested in accordance with the following:

• Local or national standards and regulations

• Guidance documents, including the UK Health and Safety Executive HSE guidance PM5

• Requirements of approved authorised bodies

• Boiler inspection bodies

• Boiler manufacturer instructions

Steam boilers must be fitted with two independent low-water level limit or alarm systems. The level sensors must be installed in separate protection tubes or chambers, with sufficient clearance between the sensor tips and earth connections.

Each sensor must be connected to an independent controller. On a low-level alarm, the alarm relay must shut off the boiler heating system.

A high-water level alarm must form part of the level control system or be provided as a separate system. Where safety requirements apply, a separate high-water level alarm system must be installed.

In this case, on a high-level alarm, the relay must simultaneously shut off the boiler feedwater and heating systems. All boiler level limit and alarm systems must be function-tested regularly.

The level sensing probes and controller are only part of the safety system. A complete system also requires other components, including wiring, relays, bells and lights.

Continuous safe and correct operation of the level control and limiting systems requires suitable water treatment. Consult a qualified water treatment company.

Symbols

Equipment protected by double or reinforced insulation;

Functional earth terminal, ensuring correct product operation; Not used to provide electrical safety;

Protective earth

Protective earth

Caution, risk of electric shock;

Caution, hazard, refer to the relevant documentation;

Optically isolated current source signal;

Caution, the circuit board is susceptible to electrostatic discharge. Do not touch the circuit board without using suitable ESD protection equipment.

AC, alternating current

1.1 Preparation for use

i) Check that the product is suitable for the fluid being controlled.
ii) Check the compatibility of the materials, as well as the maximum and minimum pressure and temperature values. If the product’s maximum operating range is lower than that required by the system in which it is to be installed, or if product failure could result in a hazardous overtemperature or overpressure condition, a safety device must be installed in the system to protect against such excessive conditions.
iii) Determine the correct product installation position and fluid flow direction.
iv) Spirax Sarco products cannot withstand external stress. Installers must consider system stresses and take appropriate precautions to reduce them.
V) Before installing the product in steam or a high-temperature medium, remove all protective covers from the connections and the protective film from the nameplate.

1.2 Access

Before carrying out any work, ensure that it is safe to do so. If necessary, provide a safe working platform with suitable protection. Arrange suitable lifting equipment where required.

1.3 Lighting

Ensure adequate lighting, particularly where detailed or complex work is to be carried out.

1.4 Hazardous liquids or gases in the pipework

Consider in advance what may be present or may have been present in the pipework. Factors to consider include whether the fluid is flammable, hazardous to health, or subject to temperature extremes.

1.5 Hazardous environments around the product

Consider the following: explosive atmospheres, lack of oxygen, such as in containers or cellars, hazardous gases, extreme temperatures, hot surfaces, fire hazards during welding, excessive noise and moving machinery.

1.6 The system

Consider the effect of the intended work on the complete system. Could the planned action, such as closing isolation valves or switching off the power, create a hazard to other parts of the system or to personnel?

Hazards may arise from the discharge or closure of protection devices, or from the cancellation of controls or alarms. Isolation valves must be operated slowly to prevent system shocks.

1.7 Pressure systems

Ensure that all pressure has been isolated and safely vented to atmospheric pressure. Consider double isolation and locking and tagging of closed valves. Do not assume that the system is depressurised even when a pressure gauge indicates zero.

1.8 Temperature

After isolation, allow sufficient time for the equipment to cool to ambient temperature to prevent burns.

1.9 Tools and spares

Before starting work, ensure that suitable tools and readily replaceable spare parts are available. Use only genuine spare parts supplied by Spirax Sarco.

1.10 Protective clothing

Consider whether you and nearby personnel need protective clothing to protect against hazards such as chemicals, high or low temperatures, radiation, noise, falling objects, and eye or face injuries.

1.11 Permits to work

All work must be carried out or supervised by suitably competent personnel. Installation and maintenance personnel must be trained in the correct operation of this product in accordance with the installation and maintenance guide.

Where a formal permit-to-work system is in force, it must be followed. Where no such system exists, the responsible person should be informed of the work being carried out and, where necessary, an assistant should be assigned responsibility for safety.

Display warning notices where necessary.

1.12 Manual handling

Manual handling of large or heavy items may cause hazards and personal injury. Lifting, pushing, pulling, carrying or supporting loads by hand may cause injury, particularly to the back. Customers are advised to assess the task, the personnel, the load and the working environment, and to use suitable handling methods according to the working conditions.

1.13 Residual hazards

Under normal conditions, the external surfaces of the product may become very hot.

Many products are not self-draining. Exercise extreme caution when dismantling the product.

1.14 Freezing

When the product is exposed to temperatures below 0°C, valves without self-draining capability may be damaged by freezing. Measures must be taken to protect them.

1.15 Disposal

When disposing of this product, appropriate precautions must be taken in accordance with local regulations.

Unless otherwise stated in the installation and maintenance guide, this product is recyclable and presents no ecological hazard when disposed of properly.

1.16 Returning products

Customers and stockists are reminded that, under EC Health, Safety and Environmental legislation, customers returning products to Spirax Sarco must provide information about hazards and the precautions to be taken when handling contaminated residues or mechanical damage. Such contamination or mechanical damage may pose risks to health, safety or the environment. Written health and safety data must be provided for any substances that are hazardous or potentially hazardous.

2. Product and Delivery Information

2.1 Introduction

LC2250 is used for level control of conductive fluids. It has one alarm channel for high and low alarms.

Warning: When using LP20/PA20, the minimum conductivity is 5 μS/cm or 5 ppm (25 °C).

The product can be panel-, DIN-rail-, or baseplate-mounted and is powered by 99-264V AC.

2.2 Front Panel

The front panel has a 3-digit LCD and a 5-button keypad:

Figure 1, Front panel and legend LC2250 LCD display % Manual valve close (debug mode only) Manual valve open (debug mode only) Alarm test Spirax Sarco Scroll menu, increase value OK When a parameter or digit is flashing, enter the parameter. Hold for 5 seconds to enter debug mode.

2.3 Using the Buttons

Buttons:

• Scroll through the main menu

• Increase a value in the menu

OK button:

• Enter or move right to the next digit, parameter, value, or menu

• Enter debug mode (hold for 5 seconds)

2.4 Manual Test Buttons (Priority Order)

Note: These buttons do not operate while parameters are being edited in debug mode. When the buttons are released, the display returns to the end of the debug menu.

AL alarm button - In operating and debug modes, tests the alarm relay and external circuit.

(+) valve open or pump on button - Opens the valve for modulating control or switches on the pump for pump control.

• Valve close button - Closes the valve for modulating control.

2.5 Operating Mode

Operating mode is the normal operating mode and shows what the system is doing.

The display indicates whether:

• An alarm condition is present

• The pump is operating (on/off control)

• The valve is operating (modulating control)

A moving block indicates whether the water level is rising or falling during pump operation. A stationary block indicates that water inflow and steam output are balanced.

The AL button can be used to test the alarm and external circuit.

Alarm

Alarm (selectable Hi or Lo)

The level has exceeded the alarm value.

Note: When an alarm is present, the pump or valve status is not displayed.

On/Off Control

Level rising - pump in

Pump-in mode, pump on - filling the vessel

Display animation: PP- -> PP= -> PP= (the block moves and the level rises)

Level Falling - Pump Out

Pump-out mode, pump on - draining the vessel

Display animation: PP= -> PP= -> PP- (the block moves and the level falls)

Pump Off

The level is between the pump-on and pump-off levels.

The block is stationary and the pump is not operating (off).

Modulating Control

Valve opening

Display animation: Pr- -> Pr= -> Pr= (the moving block indicates that the valve is opening, allowing water to enter the boiler or tank and raising the level)

Valve Closed

Display animation: Pr= -> Pr= -> Pr- (the moving block indicates that the valve is closing, reducing water inflow and lowering the level)

Valve stationary - water inflow and steam output are balanced.

Display: Pr- (block stationary)

2.6 Parameter Viewing Mode

In operating mode, press the ⚠ button to view the current level, displayed as a percentage of the gauge glass. The parameter remains displayed for 2 minutes for recording. Press the ⚠ button to view the parameters. Each parameter remains displayed for 2 minutes until the button is pressed again.

2.7 Alarm/Error Display Messages

If an error occurs, the error menu ‘ErX’ is displayed at the end of the parameter screens. Hold the OK button for 3 seconds to clear the error message and re-energize the alarm relay. If the cause of the error has not been corrected, the same error will reappear. For latched errors and alarms, only the message disappears. The alarm relay remains de-energized until the correct password is entered in debug mode. If more than one error or fault is present, the next one is displayed after the previous one has been cleared. Refer to Section 9 - Fault Finding.

2.8 Delivery, Transport, and Storage

Factory Shipment

Before shipment, the product is tested, calibrated, and inspected to ensure correct operation.

Receipt

On delivery, inspect each package for external damage. Record any visible damage immediately on the delivery note.

Open the package carefully and check the product for damage. If any damage or missing items are found, notify Spirax Sarco immediately and provide the details. Also notify the carrier and request an inspection of the damaged product and packaging at the site.

Storage

If storage is required before installation, store the product at an ambient temperature of 0-65 °C and 10%-90% relative humidity (non-condensing).

Before installation and connection to the power supply, ensure that there is no condensation inside the product.

3. System Overview

3.1 Functions

LC2250 controls the water level in boilers, tanks, and vessels by operating a pump, valve, or solenoid valve. Typical applications include:

On/Off Operation

• Pump on/off control

• One alarm output

• 4-20mA level output

Note: A solenoid valve can be used instead of a pump.

Modulating Control

The modulating valve can be controlled by a valve motor drive or a 4-20mA control signal.

• One alarm output

• 4-20mA level output

Note:

The 4-20mA output is available only when using a valve motor drive.

3.2 Inputs

The product accepts the following input signals:

• Level sensor or transmitter, 1-6V or 4-20mA.

Note: The level probe must be long enough to sense the entire measurement range.

• 1 K potentiometer input - valve motor drive (VMD)

3.3 Outputs

The output signals can be connected to a pump or modulating control valve. One relay is provided for high and low alarms, together with an isolated 4-20mA retransmission signal.

3.4 Additional Functions

Additional delays can be selected for boilers with fluctuating levels to increase the damping effect.

All debug parameters are password-protected to prevent inadvertent changes.

The product can communicate with nearby controllers via infrared communication (Spirax Sarco products only). It can be configured as a slave only. See Section 7 - Communications.

4. Mechanical Installation

Note: Before installing this product, read the safety information in Section 1.

The product must be installed in a suitable industrial control panel or flameproof enclosure that provides protection against impact and environmental conditions. Minimum protection requirements are IP54 (EN60529) or Form 3, 3S, 4, 4X, 6P, and 13 (UL50/NEMA250).

Note: Do not obstruct or cover the infrared communication path between controllers.

4.1 Environmental Conditions

The product installation environment should minimize the effects of heat, vibration, and electrical interference. Refer to Section 1 - Safety Information.

Do not install the product outdoors unless additional weather protection is provided.

4.2 Installation on a DIN Rail

Clips and a set of self-tapping screws are supplied for mounting the product on a 35mm DIN rail. Two sets of holes on the rear of the enclosure determine the height position. The clip position can be adjusted. Fit the clips into one set of holes and secure them with the two screws supplied. Ensure that the clips grip the rail securely.

Note: Use only the screws supplied with the product.

4.3 Installation on a Baseplate

• Drill holes in the baseplate as shown in Figure 2.

• Mount the product on the baseplate using two screws, nuts, and washers through the upper and lower slots.

Note: Do not drill holes in the product enclosure or use self-tapping screws.

4.4 Installation in a Panel Cutout

(When using a bezel, the minimum panel thickness is 1mm.)

• Integral threaded inserts (M4×0.7) are provided at the top and bottom of the product.

• Two M4×25mm screws, washers, and a bezel are supplied.

Note: Do not use screws longer than 25mm to avoid electric shock.

Cut out the panel according to the dimensions in Figure 2 and drill the threaded holes as indicated.

• Remove the backing from the gasket and position it on the front of the product.

• The bezel can be used to improve appearance. If required, install it on the outside of the panel.

• Install the product from the rear of the panel and secure it with the screws, washers, and bezel, as applicable.

• Tighten the M4 screws to 1.0 - 1.2Nm.

Note: Do not drill holes in the product or use self-tapping screws.

Figure 2, Baseplate/panel cutout

Cutout Notes:

• Solid lines indicate the cutout required for panel installation.

• Dashed lines indicate the product outline.

• A minimum clearance of 15mm is required between products to allow heat dissipation and cooling.

  • The mounting hole dimensions are the same for panel and wall mounting.

5. Electrical Installation

Note: Before installing this product, read the safety information in Section 1.

Warning: Disconnect the power supply before touching the wiring terminals, as hazardous voltages may be present.

Use only the connectors supplied with the product or approved spare parts. Using any other connectors may compromise product safety and invalidate the authorization.

5.1 General Wiring Instructions

The product has been designed with user safety in mind. The following points must also be observed:

1. Maintenance personnel must be suitably qualified to work with hazardous voltages.
2. Ensure that the product is installed correctly. Failure to follow these instructions may reduce the product’s safety level.
3. Product safety relies on the overcurrent protection and main isolation provided by the building installation.
4. All live conductors must be fitted with 3 A current-limiting protection devices. If current-limiting protection devices are fitted to both power conductors, operation of one device must be capable of triggering the other. Refer to IEC 60364 (low-voltage electrical installations), or comply with local overcurrent protection requirements.
5. The relay circuit must be fitted with a 3 A fast-acting fuse.
6. The relay contacts must be on the same phase as the mains supply.
7. The product is designed for Installation Category II.
8. Wiring must comply with the following standards:

• IEC 60364 - Low-voltage electrical installations

• EN 50156 - Electrical equipment for furnaces and ancillary equipment

• BS 6739 - Instrumentation in process control systems: installation design and practice, or the applicable local standards.

• National and local electrical codes for the United States and Canada, including the National Electrical Code (NEC) or Canadian Electrical Code (CEC). Note: For the United States, use NEC Class 1 wiring with a temperature rating above 75 °C. If the cable is exposed to higher temperatures, select a cable with a higher temperature rating.

9. The shield of the signal cable must be connected to ensure electromagnetic compatibility.

10. All external circuits must meet and maintain the requirements for double protection specified in IEC 60364 or an equivalent standard.

11. Additional measures must be taken to prevent accessible parts, such as signal terminals, from coming into contact with power conductors if a power terminal becomes loose. Additional devices should be installed as close as possible to the circuit board, without applying additional force to the wiring terminals. For example, use a cable clamp to bind the live and neutral conductors together. If one conductor becomes loose, the other will prevent it from coming into contact with other parts.

12. The building installation must include a disconnecting device, such as a switch or circuit breaker. The device must:

• have adequate breaking capacity;
• be located as close as practicable to the equipment and be readily accessible to the operator;
• not be installed in a position where operation is difficult;
• disconnect all live conductor terminals;
• be identified as the disconnecting device for the product;
• not impair protective earthing;
• not be used as the main power supply;
• comply with the requirements for disconnecting devices in IEC 60947-1 and IEC 60947-3;

13. Refer to Section 10, ‘Technical Information’, for terminal and cable specifications.

5.2 Mains Wiring

1. Read Section 5.1 before connecting the mains supply.
2. Wiring markings are provided on the terminal plug.
3. All live terminals must be fitted with fuses.

The disconnecting device must comply with IEC 60947-1 and IEC 60947-3.

Figure 3

The disconnecting device must comply with IEC 60947-1 and IEC 60947-3.

Figure 4

4. Double or reinforced insulation must be provided between the following equipment:

• live terminals (mains supply and relay outputs);
• other low-voltage equipment (other components, terminals, and wires).

5. The relay and switch devices shown in the wiring diagrams are in the OFF position.

5.3 Signal Wiring Instructions

If the signal cable or shield is grounded at both ends, a loop current will be generated because the earth potentials (voltages) at the two ends are different. When the wiring diagram is followed correctly, the sensor should be grounded at one end only.

The product ground is functional earthing, not protective earthing.

Protective earthing prevents electric shock in the event of a single fault. Functional earthing ensures normal product operation. In this application, functional earthing acts as a source or sink for electrical interference. The earth terminal must be connected in accordance with the EMC directive.

5.4 Sensor Wiring

The maximum cable length for all transmitters is 100 m.

Warning:

It is important to set the sensitivity of the PA20 preamplifier correctly. See the PA20 Installation and Maintenance Guide for details.

Note:

Do not connect terminal 54 to any other ground.

Ensure that the resistance between the sensor and the pipe or boiler casing is less than 1 ohm.

E = functional earth.

Figure 6 Signal loop

5.5 Level Sensors

The output signal from PA20 and LP20 capacitance level sensors can be connected to multiple controllers.

Figure 7 Multiple controllers connected to one PA20

Each instrument must be capable of accepting a 1 - 6 Vdc signal. Only one instrument needs to provide the 24 V supply. In Figure 7, the LC2250 supplies power to the capacitance sensor.

Loop-powered 4 - 20 mA

Externally powered 4 - 20 mA Level transmitter
Figure 8 4 - 20 mA level transmitter

Wiring Diagram for UL-Rated PA20

PA20 preamplifier and LP20 capacitance sensor. See the PA20 and LP20 Installation and Maintenance Guides for details.

Figure 9

Capacitance level sensor

6. Commissioning

6.1 Overview

All commissioning is carried out using the product’s front panel.

Warning: When entering commissioning mode, the product will suspend certain control functions. The control relay disconnects power to the valve. For safety reasons, the alarm relay remains active. To restore normal control functions, press ‘end’ to return to the operating menu.

Warning: If no button is pressed for more than 5 minutes, the product will return to operating mode and display an error. The product cannot perform control functions if commissioning is incomplete.

Figure 10 Panel display and keypad

6.2 Entering commissioning mode

In operating mode, press and hold the OK button for 5 seconds to enter commissioning mode.

The bar graph disappears. ‘PASS CODE’ is displayed, and ‘888’ appears in the lower-right corner of the screen. Enter the password ‘745’. The password cannot be changed.

If an incorrect password is entered, the display automatically returns to the current pump status in operating mode.

If the correct password is entered, the main menu structure is displayed. Select END to exit the menu.

In commissioning mode, press the ⚠ button to:

• Scroll upward through the main menu.

• Increase a value.

Press the OK button to confirm a selection, parameter or value, and move to the next digit.

6.2.1 Quick setup - introduction

This section allows the user to perform the minimum setup required to operate the system.

The system can operate with the factory default settings if the original defaults have not been changed. Refer to the default settings in Section 10 for confirmation.

If required, the settings can be adjusted to meet specific customer or application requirements.

Warning: It is essential to comply with national and local regulations and guidance, as well as the boiler manufacturer’s recommendations. The configured parameters ensure safe boiler operation.

Quick setup

Commissioning examples for two typical boiler applications

- On/off control, pump feed, using LP20/PA20

High-level alarm

- On/off control, pump feed, using LP20/PA20 and a VMD actuator

High-level alarm

Test whether the system is operating correctly.

6.3 Complete commissioning

Enter commissioning mode as described in Section 6.2, then change the settings as required according to Section 6.3.1, “Main menu structure”.

6.3.1 Main menu structure

Input selection - select the level transmitter input type: 1-6 V or 4-20 mA.

Input filtering - three levels of damping for the level signal, suitable for fluctuating conditions.

Note: Excessive delay can make the system unstable. Select 2 seconds, 8 seconds or 16 seconds.

Input alarm - the alarm input signal is outside the 1-6 V or 4-20 mA range. Select off or on.

Alarm selection - set the alarm to low or high. Select Hi or Lo.

Alarm level percentage - set the alarm level as a percentage of the gauge glass level. The hysteresis is fixed at 5%.

Alarm filter - select “on” to introduce an 8-second delay and prevent excessive alarms caused by fluctuations.

Alarm latching -

Latching off - the alarm clears when the water level returns to normal.

Latching on - the alarm remains active until it is reset by entering the password.

Select off or on.

Retransmission - select a 4-20 mA or 0-20 mA retransmitted output signal.

Drive type - valve motor drive or 4-20 mA retransmission. Select rel or rEt. Available only with proportional control.

*Note: Available only with proportional control, where the valve potentiometer provides valve position feedback to the controller.
The Phl and PLo settings match the potentiometer’s minimum and maximum positions to the valve flow. The potentiometer reading can be displayed in the submenu.

Note: In operating mode, the End menu is not displayed. An alarm menu is displayed instead. See Operating mode - Section 2.5.

Figure 11 Typical gauge glass level percentage settings
Refer to the boiler manufacturer’s recommendations.

6.4 Main menu commissioning instructions

6.4.1 Lhi - high level

Calibrate 100% of the gauge glass level.

Set the boiler or tank level to the top of the gauge glass.

Press the ⚠ button to select Lhi.

Press the OK button to select the submenu.

Press the OK button for 3 seconds to confirm the entered value.

6.4.2 Llo - low level

Calibrate 0% of the gauge glass level.

Set the boiler or tank level to the bottom of the gauge glass.

Warning: The water level must be visible in the gauge glass.

Press the ⚠ button to select Llo.

Press the OK button to select the submenu.

Press the OK button for 3 seconds to confirm the entered value.

7. Communications

Infrared (IR)

Adjacent products within the specified range can communicate via the infrared bus.

This allows the parameters of this product, an OEM product, to be transmitted to equipment fitted with RS485 for user products.

User products are equipped with a graphic display, while OEM products have LEDs or a 3-digit display.

This product is always an infrared slave and requires no setup or adjustment.

For further information about infrared and RS485 communications, refer to the user installation and maintenance instructions.

Important: Do not cover or obstruct the infrared beam of the product.

See the appendix for details of the data registers.

8. Maintenance

Note: Before carrying out any maintenance, read the safety information in Section 1.

The product requires no special servicing, preventive maintenance or inspection.

Level control

However, boiler water-level control and level alarms must be tested and checked. The general guidance provided in the Health and Safety Executive publication PM5 should be followed.

For specific guidance on Spirax Sarco systems, refer to the separate documentation.

Cleaning instructions

Use a cloth moistened with water or isopropyl alcohol. Using other cleaning materials may damage the product and invalidate the warranty.

9. Troubleshooting

Warning:

Before starting troubleshooting, read Section 1, Safety information, and Section 5.1, Wiring instructions.

Be aware of hazardous voltages. Troubleshooting must be carried out only by qualified personnel.

The product must be disconnected from the power supply before opening the enclosure cover, and the cover must be securely installed before power is applied.

Failure to follow the troubleshooting procedures in this manual will reduce the level of safety protection.

9.1 Introduction

If the product develops a fault, this section provides guidance for isolating and correcting the fault. Faults are most likely to occur during installation and commissioning. Incorrect wiring is the most common fault.

9.2 System faults

9.3 Operating error messages

In operating mode, any operating error is displayed on the alarm and error screen.

10. Technical information

10.1 Technical assistance

Contact your local Spirax Sarco representative.

10.2 Returning faulty equipment

Return all parts of the product to your local Spirax Sarco representative. Ensure that all parts are properly packaged for transport, preferably in the original carton.

When returning the equipment, provide the following information:

1. Your name, company name, address, telephone number, order number, invoice number, and return delivery address.
2. A description of the equipment and its serial number.
3. A detailed description of the fault or the required repair.
4. If the equipment is being returned under warranty, provide:

• Date of purchase.

• Original order number.

10.3 Power supply

10.4 Environment

10.5 Cables, data cables and connectors

Power and signal connectors

Note: Use only connectors supplied by Spirax Sarco. Failure to do so will reduce the level of safety protection.

Sensor and feedback loop cables/wires

4 - 20 mA output cable/wire

10.6 Input technical data

Level probe voltage

4 - 20 mA inputs

Level overrange alarm - voltage

Level overrange alarm - current

10.7 Technical Data

24 Vdc power supply

4 - 20 mA

Relay(s)

Infrared communications

10.8 Parameter and Default Settings

The default settings in the following tables are used in the ‘Quick Setup’ guide - see Section 6.2.1.

InS - Input selection

InF - Input filter

inA - Input alarm (out of range)

ALS - Alarm selection

ALP - Alarm percentage (level gauge)

ALF - Alarm filter

ALL - Alarm latching

rEt - Retransmission

dr - Drive

Act - Action

11. Appendix

Parameters and Register Data

The register format is a 16-bit integer, with the high 8 bits transmitted first.

12. Menu Diagram