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Model SR255 Daily-Weigh

 Scale 

Operating and Service Manual - S/N 3616+ 
Part No. MAN255_110921 

 

Page 13 of 22 

 
 

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 2011

 

S

Instruments, Inc. 

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” 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. 

Note

: No weight 

will be displayed until the button is pressed.   

To enable this mode, BEFORE zeroing the system, press and hold the “

HOLD

” button for 

approximately five (5) seconds until the display reads “

AUTO-HOLD ENABLED

”. 

To return to CONTINUOUS WEIGH mode when finished, press and hold the “

HOLD

” button for 

approximately five (5) seconds until the display reads “

CONTINUOUS WEIGH

”. 

 
 
STEP 1

:  Remove the Stretcher and position it under the patient. Include any additional items 

used when zeroing the system.  Note:  The bulk of the patient’s mass must be centered on the 
Stretcher for proper balance.  

STEP 2: 

(Figure 12)

   

SPREAD LEGS ON PATIENT-

LIFTER BEFORE ATTEMPTING TO LIFT THE 
PATIENT! 

 

 

 

 

 

 

 

 

 

 

Figure 12:  Lifter Legs Opened/Closed 

CLOSED     OPEN

Continued next page 

Summary of Contents for Daily-Weigh SR255

Page 1: ...921 Page 1 of 22 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 2011 SInstruments Inc Operating and S...

Page 2: ...011 SInstruments Inc 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 INTE...

Page 3: ...in Receptacle 7 Figure 5 T Boom Lifter Pump Connection 7 Figure 6 Transducer Connected to T Boom 7 Figure 7 Transducer Cable Connection 7 Figure 8 Transducer A Frame Connected 7 Figure 9 Velcro End o...

Page 4: ...SHOULDER BOLT for T Boom Pump Assy 1 ea WASHER for T Boom Pump Assy 1 ea 3 8 16 LOCK NUT for T Boom Pump Assy 1 ea SPREADER BAR 1 ea TRANSDUCER TUBE 1 ea 6 32 x SOCKET HEAD CAP SCREW Safety Screw Tra...

Page 5: ...1 SHOULDER BOLT for T Boom Pump Assy 1 ea WASHER for T Boom Pump Assy 1 ea 3 8 16 LOCK NUT for T Boom Pump Assy 1 ea SPREADER BAR 1 ea TRANSDUCER TUBE 1 ea 6 32 x SOCKET HEAD CAP SCREW Safety Screw T...

Page 6: ...play Unit 3 matches that on the Transducer Bar 6 STEP 3 Figure 2 Attach the Stretcher Cup 15 to the Invacare Lifter Base 1 snapping it into place and twisting the lower tab back under the Mast 12 past...

Page 7: ...t in place on Invacare Lifter Base STEP 6 Figure 5 Attach and securely tighten the rod end of the Lifter Pump 7 to the T Boom 5 using 3 8 16 x 1 in shoulder bolt washer and 3 8 16 lock nut All are shi...

Page 8: ...the Display to hold it upright STEP 11 Figure 10 The Stretcher attaches to the A Frames by inserting their hooked ends through the four holes in the Stretcher REPLACEMENT PARTS and ACCESSORIES Figure...

Page 9: ...be viewed in either pounds or kilograms with a displayed resolution of 0 1 lb or 0 1 kg INTENDED USE The SR255 Daily Weigh Scale is designed for use as a patient weighing system for non ambulatory pat...

Page 10: ...ove 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 1...

Page 11: ...AUTO ZERO One button operation AUTO POWER DOWN After 35 seconds HOLD While active freezes display data and stores it in memory LAST WEIGHT RECALL Hold button recalls last stored weight AVERAGING Auto...

Page 12: ...displayed weight and temporarily stores it away in memory Press HOLD to store the weight into memory To recall last weight reading press HOLD LB KG MODE Weight data may be viewed in either pounds or...

Page 13: ...nd displays the patient s weight as soon as the WEIGH button is pressed once Note No weight will be displayed until the button is pressed To enable this mode BEFORE zeroing the system press and hold t...

Page 14: ...KG STEP 5 When the Stretcher is securely attached pump handle until the patient is raised just enough to clear the bed and any linens etc Weigh patient and when finished lower back on to the bed by mo...

Page 15: ...EMENT 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 STEP 3 Remove and...

Page 16: ...nalog to digital converter The converter integrates the analog signal onto the integrating capacitor over a short interval The integrating capacitor is then discharged at a rate proportional to the re...

Page 17: ...STEP 3 The display will read HOLD TO CAL as the digit in the right hand corner counts down from 9 to 0 The display will then read CALIBRATION and periodically flash this on the display In the far lef...

Page 18: ...T on the stretcher and compare to display reading STEP 7 Adjust the reading using the or buttons to match the weight Display should be within 0 1 of the calibrated weight See Calibration Tolerance Tab...

Page 19: ...e seconds then re install the battery and try the WEIGH button again The display lights appear to work but does not respond to button activation Button may not have bounced back up after being pressed...

Page 20: ...c 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: ...and Service Manual S N 3616 Part No MAN255_110921 Page 21 of 22 SInstruments Inc 600 Young Street Tonawanda NY 14150 Tel 716 693 5977 Fax 716 693 5854 URL www srscales com email sri srinstruments com...

Page 22: ...6 Part No MAN255_110921 Page 22 of 22 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 2011 SInstrument...

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