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ASLD2200 - Instruction Manual

1.5 Mechanical Overview

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

DISPLAY

LED

INDICATORS

MOTOR SUB

ASSEMBLY

CABLE

DRUM

DRIVE

BELT

BELT

TENSIONER

SENSOR

ENCODER

BRACKET

ENCODER

ENCODER

DISC

AC MAINS

MOTOR ENCODER

& SENSOR

CONNECTIONS

EXTERNAL SWITCHES,

4-20mA O/P & RELAY

CONNECTIONS

SERIAL

NUMBER

FUSE

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Summary of Contents for ASLD2200

Page 1: ...INSTRUCTION MANUAL ASLD2200 Monitor Sludge Blanket Level Monitor...

Page 2: ...This page is intentionally left blank...

Page 3: ...n 14 6 2 Depth Range Selection 14 6 3 Links 15 7 Calibration 16 7 1 Set Zero 16 7 2 Set Span 16 8 Scraper Clearance 17 8 1 Bridge Clearance Control 17 9 Outputs 18 9 1 Analogue Output 18 9 2 Limit Rel...

Page 4: ...m 24 11 5 Sensor operation check 24 12 Spare Parts 25 12 1 Sensor 25 12 2 General 25 12 3 Repair 25 13 Technical Specifications 26 13 1 General 26 13 2 Alarm Output 26 13 3 Analogue Output 26 13 4 EMC...

Page 5: ...l 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 1 3 Limit Relay The ASLD2200...

Page 6: ...otor drive and encoder assembly and the control electronics enclosure Page 6 of 30 103370IM Issue 10 Date 19 03 2018 DISPLAY LED INDICATORS MOTOR SUB ASSEMBLY CABLE DRUM DRIVE BELT BELT TENSIONER SENS...

Page 7: ...he tank 0 represents the bottom and 100 is the surface the liquid The user is provided with information about the sensor reading by the panel of LED s on the printed circuit board assembly PCBA The ou...

Page 8: ...nts and is not normally applied to Sludge Blanket measurement The sensor should only be used if the sludge is very light with very clear supernatant IR40 range 0 to 1 500mg l This is the most commonly...

Page 9: ...upplied with a selection of encoder discs The disk choice is dependant on the depth of the measurement tank 3 2 1 Encoder Disc Ranges Number of Blades Tank Depth m 1 11 20 2 5 5 11 4 3 6 6 2 4 8 1 5 2...

Page 10: ...controls the function of these controls is explained in later sections Circuit Board Identity Type of Control Use Zero Push Button Calibration Top Limit Potentiometer Calibration Bridge Clearance Pote...

Page 11: ...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 Up and Stop This button will cause the sensor to ri...

Page 12: ...inimising the effect of disturbance caused by incoming sludge and by the tank scraper It is normal for the 4 20 mA output signal to be transmitted via slip rings to the site control system where this...

Page 13: ...5v DC to Encoder Red 14 Input 1 from Encoder Blue 15 Input 2 from Encoder Yellow 16 0v DC to Encoder Black 17 Nominal 18v DC to Motor ve Green 18 Nominal 18v DC to Motor ve Red Brown 19 Not Used 20 No...

Page 14: ...Treatment Thickeners 148121 IR8 Range 0 30 000 mg l Sewage Treatment Thickeners 6 2 Depth Range Selection The depth range depends on the encoder disc that has been fitted to the instrument this can be...

Page 15: ...or after a power failure the sensor will immediately start to search for the sludge blanket Switch to LEFT with white ident towards TOP Label On power up either during commissioning or after a power...

Page 16: ...tank Press the Red Zero push button to set the zero point it is sometimes necessary to press this button a few times to ensure a correct zero setting It is important that the zero point is set above t...

Page 17: ...mand These external sensors can be wired in parallel to the up and down button on the outside of the enclosure using terminals 1 to 3 8 1 Bridge Clearance Control Associated with the scraper clearance...

Page 18: ...he analogue output connect a multimeter on the mA setting Remove J13 and connect multimeter across Pins 4 5 The motor up and motor down controls can then be used to force the output to 4 mA and 20 mA...

Page 19: ...ed by observation of the sensor during the first few weeks of operation Typically the sensor should be cleaned once per fortnight although on many sites once per month is sufficient The sensor can be...

Page 20: ...ove 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 Page 20 of 30 103370IM Issue 10 Dat...

Page 21: ...Instruction Manual 10 4 Sensor replacement 103370IM Issue 10 Date 19 03 2018 Page 21 of 30 UNSCREW 4 X BOLTS TO REMOVE SIDE PLATE SIDE PLATE REMOVAL DISCONNECT SENSOR SPADE CONNECTIONS SENSOR WIRING...

Page 22: ...n any doubt please contact your local distributor or Partech 11 1 Symptom Digital display changes but does not relate correctly to the sensor position Fault Encoder incorrectly positioned Remove motor...

Page 23: ...k that disc blade is not touching any part of the encoder when the motor is moving 11 2 Symptom The sensor drives to the top limit 11 2 1 Fault Sensor is fouled Clean the sensor If the problem persist...

Page 24: ...elector switch manually drive the sensor up or down till the display reads 80 Remove the sensor from the water and check the sensor operation as follows Block the light path between the sensor gap and...

Page 25: ...200 12 2 General Part No Description 101170 Mounting Bracket for ASLD2200 103370 Instruction Manual for ASLD2200 12 3 Repair Part No Description 117150 Encoder Disc 1 Bladed for ASLD2200 117160 Encode...

Page 26: ...epth of tank typically 5 Resolution 100 mm Terminals Max conductor cross section 2 5 mm2 13 2 Alarm Output Number of Output 1 Contact Closure Alarm Types Zero and or 100 fixed Relay Rating 0 5 A 100 V...

Page 27: ...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 BUSINE...

Page 28: ...elow EN 50081 1 1992 EMC Generic Emission Standard Residential commercial light industry EN 50082 1 1994 EMC Generic Immunity Standard Residential commercial light industry following the provisions of...

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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