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SR Scales Daily-Weigh SR255 Operating And Service Manual

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Model SR255 Daily-Weigh™ Scale
Operating and Service Manual - S/N 3616+
Part No. MAN255_110921
Page 1 of 22
S
by SInstruments, Inc.
Daily-Weigh™ Scale
Operating and Service
Manual
Serial Numbers: 3616 +
,
SInstruments, Inc.
600 Young Street, Tonawanda, NY 14150
Tel: 716-693-5977
Fax: 716-693-5854 URL:
www.srscales.com
Copyright 2011 SInstruments, Inc.
email:
sri@srinstruments.com

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  • Page 1 Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 1 of 22 by SInstruments, Inc. Daily-Weigh™ Scale Operating and Service Manual Serial Numbers: 3616 + SInstruments, Inc. 600 Young Street, Tonawanda, NY 14150 Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com Copyright 2011 SInstruments, Inc.

  • Page 2: Table Of Contents

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 2 of 22 TABLE OF CONTENTS TABLE OF FIGURES ........................3 PACKING CHECKLIST – SR255– ADULT .................4 PACKING CHECKLIST – SR255 – PEDIATRIC ...............5 ASSEMBLY............................6 REPLACEMENT PARTS AND ACCESSORIES ................8 SYSTEM DESCRIPTION AND INTENDED USE ...............9 MAINTENANCE AND CLEANING ....................9 STORAGE AND TRANSPORTATION ..................10...

  • Page 3: Table Of Figures

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 3 of 22 TABLE OF FIGURES Figure 1: Assembled SR255 Daily-Weigh™ Scale ................. 6 Figure 2: Stretcher Cup Installed ....................6 Figure 3: Mast Placement and Screw .................... 7 Figure 4: Spreader Bar Connected in Receptacle ................

  • Page 4: Packing Checklist - Sr255- Adult

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 4 of 22 PACKING CHECKLIST – SR255– ADULT √ DESCRIPTION QUANTITY Box 1 T-BOOM / MAST with INVACARE LIFTER 1 ea 1/4-20 x 1” SOCKET HEAD CAP SCREW (for Mast Assy.) 1 ea INVACARE LIFTER BASE 1 ea...

  • Page 5: Packing Checklist - Sr255 - Pediatric

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 5 of 22 PACKING CHECKLIST – SR255 – PEDIATRIC √ DESCRIPTION QUANTITY Box 1 T-BOOM/MAST with INVACARE LIFTER 1 ea 1/4-20 x 1” SOCKET HEAD CAP SCREW (for Mast Assy.) 1 ea INVACARE LIFTER BASE 1 ea...

  • Page 6: Assembly

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 6 of 22 ASSEMBLY Figure 1: Assembled SR255 Daily-Weigh™ Scale # PART NAME STEP 1: Unpack the scale system and check parts 1 Invacare Lifter Base against the PACKING CHECKLIST.

  • Page 7: Figure 3: Mast Placement And Screw

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 7 of 22 ASSEMBLY Cont’d STEP 4: (Figure 3) Loosen the 1/4-20 x 1 in Socket Head Cap Screw (14) found on the mast receptacle. Insert Mast (12) into Invacare Lifter Base (1) as shown.

  • Page 8: Replacement Parts And Accessories

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 8 of 22 ASSEMBLY Cont’d STEP 10: (Figure 9) Slide the stretcher bars into the sides of the Stretcher (10) by opening the Velcro® tabs and inserting the stretcher bars.

  • Page 9: System Description And Intended Use

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 9 of 22 SYSTEM DESCRIPTION and INTENDED USE SYSTEM DESCRIPTION The SR255 Daily-Weigh™ Scale employs the latest in microprocessor and load cell technology to provide accurate and repeatable weight data. Two (2) identically matched transducers are strategically placed to ensure an accurate representation of the patient’s weight.

  • Page 10: Storage And Transportation

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 10 of 22 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 transport conditions should not vary outside the following conditions: Relative humidity 0% to 85%, Ambient Temperature 14°F to 122°F (-10°...

  • Page 11: Specifications

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 11 of 22 SPECIFICATIONS MAXIMUM WEIGHT CAPACITY 400 lb or 181 kg Adult: 32 in x 72 in STRETCHER SIZE Pediatric: 32 in x 60 in DISPLAY TYPE 16-Character dot-matrix LCD 0.1 lb or 0.1 kg...

  • Page 12: Button Functions

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 12 of 22 BUTTON FUNCTIONS Press box under each icon to activate command ZERO The “ZERO” button is used to zero the system before placing a patient onto the scale system.

  • Page 13: Figure 12: Lifter Legs Opened/Closed

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 13 of 22 BASIC SYSTEM OPERATION Cont’d 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”...

  • Page 14: Figure 13: Lifter Lock/ Release Lever

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 14 of 22 BASIC SYSTEM OPERATION Cont’d STEP 3: (Figure 13) To RAISE the T-Boom, the Lock/ Release Lever on the lifter must be in the LOCK position (left). Pump the handle.

  • Page 15: Battery Replacement

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 15 of 22 BATTERY REPLACEMENT STEP 1: The display will read “CHANGE BATTERY” when the batteries are low. STEP 2: Unscrew the four (4) screws and open the Battery Compartment Cover on the front of the Display Unit.

  • Page 16: Theory Of Operation

    Page 16 of 22 THEORY OF OPERATION SR Instruments patient weighing systems are digital scales. Strain-gauge force cells convert the force of an applied weight into an analog signal. This signal is amplified by an operational amplifier and converted to a digital signal by an analog to digital converter. The digital signal is transferred to a micro-controller where it is filtered, converted to appropriate units and displayed on a liquid crystal display.

  • Page 17: Calibration

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 17 of 22 CALIBRATION IMPORTANT CALIBRATION CHECK Qualified service personnel only should perform this procedure. Load cells have no user serviceable components and should not be tampered with for any reason.

  • Page 18: Initialization

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 18 of 22 CALIBRATION Cont’d CAUTION The integrated circuits and semiconductors on the printed circuit boards may be damaged by electrostatic discharge (ESD). Be sure to use proper handling precautions at all times.

  • Page 19: Troubleshooting

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 19 of 22 INITIALIZATION Cont’d STEP 1: Remove the four (4) screws on the back of the display housing. (Figure 17) The Initialization Buttons (SW2 and SW5) are located internally on the PC Board as indicated. STEP 2: Simultaneously press buttons indicated to initialize the system.

  • Page 20: Warranty

    SR Instruments, Inc.’s part, and it neither assumes nor authorizes any other person to assume for SR Instruments, Inc. any other liabilities in connection with the sale of said articles. In no event shall SR Instruments, Inc.

  • Page 21: Notes

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 21 of 22 NOTES SInstruments, Inc. 600 Young Street, Tonawanda, NY 14150 Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com Copyright 2011 SInstruments, Inc. email: sri@srinstruments.com...

  • Page 22: Young Street, Tonawanda, Ny

    Model SR255 Daily-Weigh™ Scale Operating and Service Manual - S/N 3616+ Part No. MAN255_110921 Page 22 of 22 By SInstruments, Inc. Precision & Technology in Perfect Balance ® SInstruments, Inc. 600 Young Street, Tonawanda, NY 14150 Tel: 716-693-5977 Fax: 716-693-5854 URL: www.srscales.com Copyright 2011 SInstruments, Inc.

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