SR Instruments SR755KG Operating And Service Manual Download | Manualshive

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Model SR755KG Series Wheelchair Scale
Operating and Service Manual - S/N 1913+
Part No.: MAN755KG_100929

Page 1 of 16

S

Instruments, Inc.

,

600 Young Street, Tonawanda, NY 14150

Tel: 716-693-5977 Fax: 716-693-5854 URL:

www.srscales.com

email:

sri@srinstruments.com

Copyright 2010

S

Instruments, Inc.

by

S

Instruments, Inc.

Operating and Service

Manual

Serial Numbers: 1913+

Model

SR755KG

Wheelchair Scale

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Summary of Contents for SR755KG

Page 1: ...KG_100929 Page 1 of 16 SInstruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2010 SInstruments Inc by S Instruments Inc Operating and Service Manual Serial Numbers 1913 Model SR755KG Wheelchair Scale ...

Page 2: ...SSORIES 5 SYSTEM DESCRIPTION AND INTENDED USE 5 MAINTENANCE AND CLEANING 6 STORAGE AND TRANSPORTATION 6 SPECIFICATIONS 7 BUTTON FUNCTIONS 8 BASIC SYSTEM OPERATION 8 BATTERY REPLACEMENT 9 THEORY OF OPERATION 10 CALIBRATION 11 INITIALIZATION 12 TROUBLESHOOTING 13 WARRANTY 14 NOTES 15 TABLE OF FIGURES Figure 1 Assembly Diagram 4 Figure 2 Location of Mast Pipe Set Screws and Display Cable Connection 4...

Page 3: ...n x 28 in 1 ea MAST PIPES 2 ea DISPLAY UNIT with CABLE 1 ea PACKAGE OF FOUR 4 LEVELING FEET 1 ea PACKAGE OF SIX 6 D CELL BATTERIES 1 ea LOCTITE 1 ea 1 8 ALLEN WRENCH 1 ea QC INSPECTION SHEET 1 ea CALIBRATION CERTIFICATE 1 ea WARRANTY CARD 1 ea MANUAL 1 ea DESCRIPTION QUANTITY BASE ASSEMBLY SR755LKG 71 cm x 71 cm 28 in x 28 in 1 ea MAST PIPES 2 ea DISPLAY UNIT with CABLE 1 ea PACKAGE OF FOUR 4 LEVE...

Page 4: ... of Loctite STEP 4 Position the Mast Pipes into the Base Assembly as shown while feeding the display cable through the left hole STEP 5 Figure 2 Gently rest the scale on its side and open the Battery Compartment Cover 4 located in the Base Assembly between the wheels Make sure the Mast Pipes are seated against the bottom stops and securely tighten the Mast Pipe Set Screws 5 using a small amount of...

Page 5: ... DESCRIPTION and INTENDED USE SYSTEM DESCRIPTION The SR755KG Wheelchair Scale System employs the latest in microprocessor and load cell technology to provide accurate and repeatable weight data Four 4 identically matched transducers are strategically placed to ensure an accurate representation of the patient s weight The low power microprocessor circuitry allows the SR755KG to derive its power fro...

Page 6: ...teel pipes Exercise caution when cleaning the display window as it is made of clear polyester and can be scratched by abrasive cleaners Mild soap and water is recommended for general cleaning and disinfecting STORAGE and TRANSPORTATION STORAGE If storing this equipment for periods longer than three 3 months remove the batteries To maintain proper operation of this instrumentation storage and trans...

Page 7: ... ZERO One button operation AUTO POWER DOWN After 35 seconds HOLD Stores displayed reading in memory LAST WEIGHT RECALL Hold button recalls last stored displayed reading AVERAGING Automatic digital filter POWER SUPPLY Six 6 D cell batteries Low battery indicator on Display CALIBRATION Calibration is traceable to NIST standards OPERATING CONDITIONS Normal operating conditions for this product Ambien...

Page 8: ...own before the weighing process is done HOLD stores it away in memory Press to store the weight into memory To recall last weight reading press HOLD LB KG BASIC SYSTEM OPERATION SETTING SYSTEM ZERO DETERMINING WHEELCHAIR WEIGHT Make sure the sca and press the ZERO button The displa ASE WAIT HANDS ale system while Z The system WAIT weighing su The WEIGH button wakes up the display and shows the pat...

Page 9: ...nt s weight only CONTINUOUS WEIGH In this default mode the weighing surface remains active Press the HOLD button once to lock the displayed reading and store it in memory as the last weight for recall later if needed AUTO HOLD This mode is for patients unable to remain still for the weighing procedure It locks stores and displays the patient s weight as soon as the WEIGH button is pressed once Not...

Page 10: ...ignal This signal is amplified by an operational amplifier and ed to a digital micro con oller where it is filtered converted to appropriate units and displayed on a liquid display Strain gauge force cells each contain four strain gauges mounted in a full Wheatstone bridge configu ysical moveme trical resistance o in v ss the Wheatstone bridge which is amplified by the opera to current sum the out...

Page 11: ...TEP 1 Figure 1 Remove the two 2 screws on the bottom of the display housing Lift the display panel The calibration buttons are located on the PC Board STEP 2 Figure 6 Press and hold both butto Figure 6 Calibration Button Diagram ns simultaneously SW5 and SW6 STEP 3 The display will read HOLD TO CAL as the right hand digit counts down to enter the CAL mode STEP 4 When in the CAL mode press the ZERO...

Page 12: ... located internally on the PC Board Refer to PC BOARD LAYOUT SW2 and SW5 STEP 2 Simultaneously press buttons indicated to initialize the system The display will read HOLD TO INIT and count down from 9 to 0 When the initializing is complete the display ill read INITIALIZING and then return to the WEIGH mode w STEP 3 Follow the CALIBRATION procedure CAUTION The integrated circuits and semiconductors...

Page 13: ...eelc The characters only appear on half of the display Press the WEIGH button or remove battery Wait five seconds then re install the battery and try the WEIGH button again one The display lights appear to work but do ot respond to button activa Button may not have bounced back up after being and inspect buttons Make sure the rubber boot is not sitting too high Re n tion pressed Remove the facepla...

Page 14: ...ns are to be shipped FREIGHT PREPAID to SR Instruments Inc 600 Young Street Tonawanda NY 14150 RESTOCKING FEE 15 fee for any scale that has been opened and used 10 fee for any scale returned that has been ordered incorrectly or refused delivery with no model change 5 fee if an error in ordering has been made and a different model exchanged No fees will be charged if the scale is returned because o...

Page 15: ...ting and Service Manual S N 1913 Part No MAN755KG_100929 Page 15 of 16 SInstruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2010 SInstruments Inc NOTES ...

Page 16: ... 1913 Part No MAN755KG_100929 Page 16 of 16 SInstruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com Copyright 2010 SInstruments Inc By SInstruments Inc Precision Technology in Perfect Balance ...

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