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Related Manuals for ParTech ASLD2200
Summary of Contents for ParTech ASLD2200
- Page 1 INSTRUCTION MANUAL ASLD2200 Monitor Sludge Blanket Level Monitor...
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Page 3: Table Of Contents
ASLD2200 - Instruction Manual Table of Contents 1 Introduction.................................. 5 1.1 General................................5 1.2 Output Signal..............................5 1.3 Limit Relay................................ 5 1.4 Manual Conventions............................5 1.5 Mechanical Overview............................6 2 Principle of Operation..............................7 3 ASLD2200 Selection..............................8 3.1 Sensor Selection............................... 8 3.2 Encoder Disc Selection............................. - Page 4 ASLD2200 - Instruction Manual 11.3 Symptom: Motor does not respond to changes in the sludge blanket level; sensor working correctly...24 11.4 Symptom: Excessive play on cable drum...................... 24 11.5 Sensor operation check..........................24 12 Spare Parts................................25 12.1 Sensor................................25 12.2 General.................................
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Page 5: Introduction
Output Signal The ASLD2200 provides a 4-20 mA output signal that is proportional to the location of the top of the sludge blanket. With a normal setup the 4mA value relates to the bottom of the tank and 20 mA to the water surface. -
Page 6: Mechanical Overview
CONNECTIONS AC MAINS FUSE DISC CONNECTIONS The ASLD2200 is composed of three component assemblies: The external cable drum and sensor, the motor drive and encoder assembly, and the control electronics enclosure. Page 6 of 30 103370IM Issue 10 Date 19/03/2018... -
Page 7: Principle Of Operation
2 Principle of Operation The ASLD2200 uses a Suspended Solids sensor to detect the density of the sludge & hence the position at which the density makes a step change (the interface): The instrument moves the sensor to a point that is just above the interface, (low SS), then lowers the sensor below the interface, (high SS), to confirm the position of said interface. -
Page 8: Asld2200 Selection
3 ASLD2200 Selection 3.1 Sensor Selection The ASLD2200 is supplied with a IR sensor; the correct sensor should have been selected before purchase. If you are in any doubt about the sensor that has been supplied please contact Partech. Sensor replacement in the field is easy to carry out; the table below indicates the normal application of the each of the four sensor ranges. -
Page 9: Encoder Disc Selection
ASLD2200 - Instruction Manual Encoder Disc Selection The ASLD2200 is supplied with a selection of encoder discs. The disk choice is dependant on the depth of the measurement tank. 3.2.1 Encoder Disc Ranges ENCODER DISC SELECTION Number of Blades Tank Depth (m) 11-20 5.5-11... -
Page 10: Control Settings
ASLD2200 - Instruction Manual 4 Control Settings The principle control during operation is the rotary switch; this allows the user to select the following operations PANEL – WITH DISPLAY & CONTROL In ‘AUTOMATIC’ mode the instrument will continually monitor the suspended solids density and will move the sensor up and down to track the sludge blanket interface. -
Page 11: Up And Down Buttons
ASLD2200 - Instruction Manual Up and Down Buttons The ASLD 2200 has 2 sets of Up and Down buttons; one set is on the outside of the enclosure the other set is on the main printed circuit board (protruding above the front panel). Both sets have the same function. These buttons are normally used to aid cleaning of the sensor by bringing the sensor to the surface. -
Page 12: Installation
5 Installation 5.1 Location The ASLD2200 is housed in an IP55 GRP outer enclosure and is suitable for mounting on the bridge of settlement tanks. The electronics for the monitor are housed within an inner IP65 enclosure. It is recommended that the monitor be mounted approximately half way between the centre and the outside wall of the tank, on the leading edge. -
Page 13: Electrical Connections
No connection Neutral Live The ASLD2200 requires a mains power supply to operate this can be either 115 or 230v AC. Unless specifically advised to do so, do not make changes to the internal wiring. 103370IM Issue 10 Date 19/03/2018... -
Page 14: Configuration
ASLD2200 - Instruction Manual 6 Configuration The ASLD2200 requires very little configuration, the user must check the following details before use. If you find that the incorrect sensor or encoder disc has been purchased contact Partech to arrange a replacement. -
Page 15: Links
ASLD2200 - Instruction Manual Links The circuit board has two sets of links (LINK_A & LINK_B), and a ‘Reset Mode’ switch that need to be set in the correct position for the application. RESET LINK A MODE SWITCH LINK B POSITION OF PCBA MOUNTED LINKS &... -
Page 16: Calibration
ASLD2200 - Instruction Manual 7 Calibration Calibration is carried out in 2 stages; firstly set the zero point, then the 100% value. As the sensor is going to be lowered to the bottom of the tank it is important that attention is paid to any hazards such as moving scrapers below the surface of the tank. -
Page 17: Scraper Clearance
The ASLD2200 allows the user to instruct the sensor to rise to 100% to allow the scraper to pass and then return to the tank to continue measurement. -
Page 18: Outputs
9.2 Limit Relay The ASLD2200 is equipped with a relay that is normally open; when either the top or bottom limit is reached this contact will close. Either or both top and bottom limits can cause this relay to activate, links A and B are used to configure this feature. -
Page 19: Maintenance
ASLD2200 - Instruction Manual 10 Maintenance 10.1 General Precautions Do not lift the unit by the drum Check that the unit is bolted firmly to the support bracket Warning: Isolate the mains supply before commencing any maintenance to the electronics enclosure; the external switch does not isolate the electronics 10.2... - Page 20 ASLD2200 - Instruction Manual 3. Remove 3x Orange connectors 4. Remove 2X Nylon pillars 5. Unscrew earth nut and remove earth wires 6. Remove 2x Posi head screws and remove printed circuit board assembly PCBA SCREWS Page 20 of 30...
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Page 21: Sensor Replacement
ASLD2200 - Instruction Manual 10.4 Sensor replacement UNSCREW 4 X BOLTS REMOVE SIDE PLATE SIDE PLATE REMOVAL DISCONNECT SENSOR SPADE CONNECTIONS SENSOR WIRING REMOVAL 103370IM Issue 10 Date 19/03/2018 Page 21 of 30... -
Page 22: Fault Finding
ASLD2200 - Instruction Manual 11 Fault Finding Listed below are some of the common problems found on the ASLD2200, the list is not comprehensive and if you are in any doubt please contact your local distributor or Partech. 11.1 Symptom: Digital display changes but does not relate correctly to the sensor position... -
Page 23: Symptom: The Sensor Drives To The Top Limit
Symptom: The sensor drives to the top limit. 11.2.1 Fault: Sensor is fouled Clean the sensor. If the problem persists after sensor cleaning then the sensor is likely to have failed. Contact Partech. 11.2.2 Fault: Faulty External UP Switch Replace switch... -
Page 24: Symptom: Motor Does Not Respond To Changes In The Sludge Blanket Level; Sensor Working Correctly
11.3 Symptom: Motor does not respond to changes in the sludge blanket level; sensor working correctly. Fault: Printed circuit board assembly fault. Remove the printed circuit board assembly as described in section10.3 above, and return to Partech for investigation. Pack the board carefully protecting the selector switch 11.4 Symptom: Excessive play on cable drum Fault: Loose grub screws securing cable drum shaft Tighten grub screws. -
Page 25: Spare Parts
ASLD2200 - Instruction Manual 12 Spare Parts The parts listed below are available for the ASLD2200; it is advisable to contact your local distributor or Partech’s technical support team before purchasing these parts to ensure that the correct items are purchased. -
Page 26: Technical Specifications
ASLD2200 - Instruction Manual 13 Technical Specifications 13.1 General Supply Voltage 115/230 VAC, 50/60 Hz, +10/-15% Power Consumption 25 VA Supply Fuse Fuse 2.5A T 250V Antisurge 5mm x 20mm Glass (Fitted to PCBA) Operating Temperature 0 to 50°C Storage Temperature -20 to 70°C... -
Page 27: Technical Support
Application details • Description of fault • 14.1 Returning Equipment for Repair If equipment needs to be returned to Partech for repair or service the following address should be used: SERVICE DEPARTMENT PARTECH INSTRUMENTS ROCKHILL BUSINESS PARK HIGHER BUGLE ST AUSTELL... -
Page 28: Declaration Of Conformity
ASLD2200 - Instruction Manual 15 Declaration of Conformity DECLARATION OF CONFORMITY According to EN 45014 We, Partech Instruments, Rockhill Business Park, Higher Bugle, St Austell, Cornwall, United Kingdom, declare under our sole responsibility that the product: Product Name: ASLD2200 Monitor... - Page 29 ASLD2200 - Instruction Manual 103370IM Issue 10 Date 19/03/2018 Page 29 of 30...
- Page 30 Partech Instruments Rockhill Business Park, Higher Bugle, St Austell, Cornwall, PL26 8RA, UK Tel: +44(0)1726 879800 Email: info@partech.co.uk Web: www.partech.co.uk...
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