Spirax Sarco PA420 Installation And Maintenance Instructions Manual Download Page 1 | Manualshive

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IM-P402-139

AB Issue 1

1

PA420

4 - 20 mA Loop Powered Level Preamplifier

Installation and Maintenance Instructions

1. Safety information

2. General

product information

3. Installation

4. Wiring

5. Commissioning

6. Maintenance

7. Fault finding

8. Technical data

IM-P402-139

AB Issue 1

4026150/1

© Copyright 2013

Printed in the UK

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Summary of Contents for PA420

Page 1: ...Preamplifier Installation and Maintenance Instructions 1 Safety information 2 General product information 3 Installation 4 Wiring 5 Commissioning 6 Maintenance 7 Fault finding 8 Technical data IM P402...

Page 2: ...IM P402 139 AB Issue 1 2...

Page 3: ...l or National standards and regulations Guidance Notes Health and Safety Executive BG01 and INDG436 in the UK The requirements of Approvals Authorities Boiler inspection bodies Boiler manufacturer s s...

Page 4: ...aximum and minimum values If the maximum operating limits of the product are lower than those of the system in which it is being fitted or if malfunction of the product could result in a dangerous ove...

Page 5: ...uble block and bleed and the locking or labelling of closed valves Do not assume that the system has depressurised even when the pressure gauge indicates zero 1 8 Temperature Allow time for temperatur...

Page 6: ...ion must be made to protect products which are not self draining against frost damage in environments where they may be exposed to temperatures below freezing point 1 15 Disposal Unless otherwise stat...

Page 7: ...irax Sarco and standard industrial controls which are used to control or monitor level It has two buttons and a dual coloured light red and green for use at commissioning It consists of a tubular aust...

Page 8: ...the preamplifier to the probe and hand tighten only 3 Installation Fig 2 4 Wiring 4 1 General information Cabling should be installed in accordance with BS 6739 Instumentation in Process Control Syste...

Page 9: ...Screen Loop Internally connected to PA420 body earthed DO NOT connect to any other earth Follow the installation instructions of the instrument the PA420 is connected to 4 3 Cable socket To unplug the...

Page 10: ...ion span To configure the water levels Step 1 Set the water level to the desired 4 mA or 20 mA level Step 2 Press the 4 mA or 20 mA button for three seconds Step 6 Repeat the above to configure the se...

Page 11: ...on For specific testing instructions for Spirax Sarco systems please see separate literature 100 20 mA Absolute maximum safe water level Set point 50 0 4 mA Absolute minimum water level water must alw...

Page 12: ...age across terminals 1 and 2 and ensure it is within specification See Section 8 3 Check the polarity of the supply Plug the connector back in Check the loop current is within specification See Figure...

Page 13: ...eplacement product follow the actions in Section 7 1 Generic faults 3 Light flashes red 3 times repeatedly and alarm output Level input was too high The measured level signal from the LP20 was too hig...

Page 14: ...ogether The level input was not saved in memory 1 2 3 Check the button has not been damaged Check around the product to ensure that nothing is pressing on the buttons Follow the actions in Section 7 1...

Page 15: ...5 6 Light flashes red 6 times repeatedly Watchdog timeout The internal microcontroller has briefly stopped and recovered automatically 1 2 Follow the actions in Section 7 1 Generic faults Monitor data...

Page 16: ...ipment being returned 3 Full description of the fault or repair required 4 If the equipment is being returned under warranty please indicate a Date of purchase b Original order number 8 2 Limiting con...

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