SR Instruments SR Scales SR7020i Service manual

Model SR7020iWall Mount Platform Scale
Operating and Service Manual
Part No.MAN7020I_MICROBAN_200520 Page 1 of 16
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected]m Copyright 2020 SInstruments, Inc.
S
by SInstruments, Inc.
Wall Mount Platform Scale
Operating and Service
Manual
Model SR7020i

Model SR7020iWall Mount Platform Scale
Operating and Service Manual
Part No.MAN7020I_MICROBAN_200520 Page 2 of 16
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected]m Copyright 2020 SInstruments, Inc.
TABLE OF CONTENTS
PACKING CHECKLIST.................................................................................................................3
INSTALLATION..............................................................................................................................3
REPLACEMENT PARTS AND ACCESSORIES ........................................................................6
SYSTEM DESCRIPTION AND INTENDED USE.......................................................................6
MICROBAN ANTIMICROBIAL PROTECTION.......................................................................6
MAINTENANCE AND CLEANING............................ERROR! BOOKMARK NOT DEFINED.
STORAGE.........................................................................................................................................7
SPECIFICATIONS...........................................................................................................................8
BUTTON FUNCTIONS...................................................................................................................9
BASIC SYSTEM OPERATION....................................................................................................10
THEORY OF OPERATION .........................................................................................................11
CALIBRATION..............................................................................................................................12
TROUBLESHOOTING.................................................................................................................14
WARRANTY...................................................................................................................................15
TABLE OF FIGURES
Figure 1: Wall Bracket...................................................................................................................4
Figure 2: Wall Bracket Installation...............................................................................................4
Figure 3: Power Cord Plug In........................................................................................................5
Figure 4: Button Display................................................................................................................9
Figure 5: Calibration Table .........................................................................................................12
Figure 6: Calibration Switch Diagram .......................................................................................12

Model SR7020iWall Mount Platform Scale
Operating and Service Manual
Part No.MAN7020I_MICROBAN_200520 Page 3 of 16
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected]m Copyright 2020 SInstruments, Inc.
PACKING CHECKLIST
SR7020iWall Mount Platform Scale
INSTALLATION
STEP 1: Unpack the scale system and check parts against the PACKING CHECKLIST. If there are any
missing or damaged parts, please call the service hotline at 1-800-654-6360.
STEP 2: Determine the best location for the scale by considering these recommendations:
Have free wall / hallway space to roll equipment onto the scale from either side.
Platform extends 42” into the hallway when folded down. Hallway must be wide enough to allow
suitable access and egress for personnel using the hallway.
A 120v AC power outlet must be within 72” of the power supply on the scale.

DESCRIPTION
QUANTITY
PLATFORM SCALE
1 ea
MOUNTING BRACKET AND HARDWARE PACKET
1 ea
6 FOOT POWER SUPPLY CORD
1 ea
CALIBRATION CERTIFICATE
1 ea
WARRANTY CARD
1 ea
MANUAL
1 ea
Continued next page
IMPORTANT
SCALE MUST BE INSTALLED BY
QUALIFIED PERSONNEL
WARNING
DEVICE MUST BE INSTALLED IN
A LOCATION THAT ALLOWS FOR
MEANS OF EGRESS ACCORDING
TO LOCAL, STATE AND
NATIONAL STANDARDS

Model SR7020iWall Mount Platform Scale
Operating and Service Manual
Part No.MAN7020I_MICROBAN_200520 Page 4 of 16
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected]m Copyright 2020 SInstruments, Inc.
38-3/4” from
floor
Outer Mounting
Holes are 16”
on Center
Inner Mounting
Holes
INSTALLATION (CON’T)
STEP 3: To mount the SR7020iWall Mount Platform Scale use the Wall Bracket (Figure 1) supplied with
the scale.
STEP 4: When the desired location is determined, use a tape measure and measure up from the floor 38 ¾”
and make a mark. This will be the location of top edge of the wall mounting bracket (Figure 2).
NOTE: The wall mounting bracket does not need to be centered on the crossbar, but must be located
between the bumpers
STEP 5: For stud walls, use a stud finder and locate any studs in the mounting area:
•For two (2) studs located within the mounting area (usually 16” on center) align the outer mounting
holes with the studs, level the wall bracket and mark all four screw locations.
•For one (1) stud located within the mounting area align the inner mounting holes with the stud,
level the wall bracket and mark all four screw locations.
•For no studs located within the mounting area, level the wall bracket and mark all four screw
locations.
For concrete walls, level the wall bracket and mark all four screw locations
Figure 1: Wall Bracket
Figure 2: Wall Bracket Installation
Continued next page
WARNING
THE WALL BRACKET MUST BE
SECURELY ANCHORED TO THE WALL
USING APPROPRIATE HARDWARE

Model SR7020iWall Mount Platform Scale
Operating and Service Manual
Part No.MAN7020I_MICROBAN_200520 Page 5 of 16
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected]m Copyright 2020 SInstruments, Inc.
INSTALLATION (CON’T)
STEP 6: For stud wall mounting locations without a stud, use a screwdriver to drive the provided self-
drilling wall anchors into the wall. It is not recommended to use a power drill to set the wall anchors.
For concrete wall mounting, install appropriate wall anchors at all marked screw locations.
STEP 7: Mount the bracket to the wall by either using the provided #8 x 1” Phillips flat head screws into
the self-drilling wall anchors or using the customer supplied appropriate flat head screws long enough to
anchor into the wall or the concrete anchors.
NOTE: The screws need to be a flat head type screw so there is adequate clearance for the scale frame to
slide into the wall bracket.
STEP 8: After the bracket is securely fastened to the wall, have two people lift the SR7020i Series scale
and place it into the wall mounting bracket.
INSTALLATION (CON’T)
STEP 9: Carefully lower the SR7020i Series platform down into position for use and plug the provided AC
power cord into the power supply located inside the bracket at the right end of the upper support bar and
into a wall outlet (Figure 3).
Figure 3: Power Cord Plug In
IMPORTANT
THE WALL BRACKET IS INTENDED TO KEEP THE SCALE
FROM PULLING OFF OF THE WALL. ENSURE THAT THE
ENTIRE WEIGHT OF THE SCALE IS ON THE FLOOR AND
NOT ON THE WALL BRACKET.
WARNING
THE COUNTER BALANCE
ACTUATORS ASSIST THE END USER
WHEN RAISING OR LOWERING THE
PLATFORM. THE END USER NEEDS
TO CONTROL THE RAISING AND
LOWERING OF THE PLATFORM.

Model SR7020iWall Mount Platform Scale
Operating and Service Manual
Part No.MAN7020I_MICROBAN_200520 Page 6 of 16
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected]m Copyright 2020 SInstruments, Inc.
REPLACEMENT PARTS and ACCESSORIES
SYSTEM DESCRIPTION and INTENDED USE
SYSTEM DESCRIPTION
The SR7020iWall Mount Platform 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 SR7020ilow power microprocessor circuitry is powered by a Medical Grade AC power supply.
The patient’s weight is displayed on a 16-character dot matrix LCD w/LED backlight. The weight data may
be viewed either in pounds or kilograms with a displayed resolution of 0.1 for each.
The SR7020iWall Mount Platform Scale system has a 38” x 58” (96.5 cm x 147.3 cm) platform weighing
surface.
The scale system has a programmable Automatic Power Down (APD) for adjusting scale on-time.
INTENDED USE
The SR7020iWall Mount Platform Scale system is
specifically designed for weighing ambulatory and non-
ambulatory stretcher and wheelchair bound patients and is a
preferred means of gathering patient weight data of up to
1000 pounds or 454 kilograms.
Platform should be stored in the upright position when not in
use to prevent a trip and fall hazard.
MICROBAN ANTIMICROBIAL PROTECTION
Microban® antimicrobial technology has been added to help reduce the growth of bacteria as part of a
medical center's approach to creating a cleaner healthcare environment. For more information, visit
https://www.microban.com/sr-scales
Part #
Description
FRTP211C1
Paper, thermal printer 58mm (15 rolls)
FRME20A0903F01
Medical Grade AC Power Supply
FRPCORD3
3 Foot Ultra Low Profile Angled Power Cord
FRPCORD6
6 Foot Ultra Low Profile Angled Power Cord
WARNING
DO NOT EXCEED
MAXIMUM WEIGHT LIMIT OF
1000 LB / 454 KG
WARNING
DEVICE COULD BE A TRIP AND
FALL HAZARD IF PLATFORM IS
LEFT IN THE DOWN POSITION

Model SR7020iWall Mount Platform Scale
Operating and Service Manual
Part No.MAN7020I_MICROBAN_200520 Page 7 of 16
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected]m Copyright 2020 SInstruments, Inc.
CLEANING and DISINFECTING
CLEANING
To clean the display / user interface and other scale contact areas:
Use a soft cloth dampened with water and mild detergent to clean scale surfaces.
Wipe surface with clean soft cloth dampened with water and then dry with clean soft cloth.
Do not use abrasive materials to clean scale surface to prevent damage to the surface
finish.
Do not spray liquid directly onto scale surfaces. Use only a damp cloth.
DISINFECTION
To disinfect the display / user interface and other scale contact areas:
Use a soft cloth dampened with disinfectant or a damp disposable disinfectant cloth. Cloth
cannot be dripping wet. Follow manufacturer’s instruction on the proper use of
commercially available disinfectants.
Disinfectant solutions with 1% sodium hypochlorite or 70% isopropyl alcohol are suitable
for display / user interface and other scale contact surfaces.
After disinfecting, use a soft cloth dampened with clean water and dry with a soft clean
cloth to prevent buildup of material on scale finish.
Do not use abrasive material to disinfect / clean scale surfaces to prevent damage to the
surface finish.
Do not spray liquid directly onto scale surfaces. Use only a damp cloth.
WARNING: DO NOT SPRAY CLEANING SOLUTION OR LIQUIDS DIRECTLY
ON SURFACES TO BE CLEANED
WARNING: EXPOSURE TO EXCESSIVE LIQUID WILL DAMAGE USER
INTERFACE KEYPAD
WARNING: DO NOT USE PRESSURIZED WATER OR STEAM. THE SCALE
SYSTEM CONTAINS ELECTRONIC COMPONENTS THAT MAY BE
ADVERSELY AFFECTED BY EXPOSURE TO SUCH AN
ENVIRONMENT.
STORAGE
Platform should be stored in the upright position when not in use to prevent a trip and fall hazard.
If storing this equipment for periods longer than three (3) months store in the upright position to prevent
damage to the hydraulic cylinders. 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C to +50C).

Model SR7020iWall Mount Platform Scale
Operating and Service Manual
Part No.MAN7020I_MICROBAN_200520 Page 8 of 16
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected]m Copyright 2020 SInstruments, Inc.
SPECIFICATIONS
MAXIMUM WEIGHT CAPACITY
1000 lb or 454 kg
PLATFORM SIZE
38 in x 58 in (96.5 cm x 147.3 cm)
DISPLAY TYPE
16-Character Dot-Matrix LCD
DISPLAY RESOLUTION
0.1 lb / 0.1 kg
ACCURACY
0.1% +/- 1 digit of displayed resolution for calibrated range
AUTO ZERO
Auto Zero when platform is first put down. One button
operation after platform is left down.
AUTO POWER DOWN
Adjustable between 30 to 300 seconds
AVERAGING
Automatic digital filter
POWER SUPPLY
Medical Grade AC Power Supply,
CALIBRATION
Calibration is traceable to NIST standards.
OPERATING CONDITIONS
Normal operating conditions for this product:
Ambient Temperature Range: 68F to 85F (20C to 30C)
Relative Humidity Range: 0%-85%
Avoid exposure to high-pressure water or steam.
TRANSPORTATION and
STORAGE
Platform should be stored in the upright position when not in
use to prevent a trip and fall hazard.
Storage and transportation conditions should not vary outside
the following conditions: Relative Humidity 0% to 85%,
Ambient Temperature 14F to 122F (-10C to +50C).
Store in the upright position if storing longer than three (3)
months.

Model SR7020iWall Mount Platform Scale
Operating and Service Manual
Part No.MAN7020I_MICROBAN_200520 Page 9 of 16
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected]m Copyright 2020 SInstruments, Inc.
BUTTON FUNCTIONS
WEIGH Press and hold to zero scale. Button is used to zero the system before placing the patient on the
scale. Ensure that nothing is in contact with the weighing surface during this procedure.
SEND (PRINTER)
Press to send stored values to printer. Output values include time, date, and weight. If BMI was
calculated, BMI and height will be included in the output values. Also, low paper is an output
value.
RECALLPress to recall the last stored weight. The stored weight will be erased when the scale is zero or
another stable weight is stored.
BMI
Press to calculate BMI. When the “BMI” is pressed, the default value “HT = 65 in” or “HT =
165 cm” is displayed. If there is no stored stable weight, the display will indicate “NO
WEIGHT DATA” and then go back to the weigh screen “WT = 0.0 Lb”.
MENU Press Menu to toggle through the menu options.
Setting the UNITS: Use UP or DOWN arrow buttons to select “Lb/ in” or “Kg/ cm”. Press
ENTER to save changes.
Setting ON TIME: Use UP or DOWN arrow buttons to adjust the “ON TIME”. The “ON
TIME” may be set from 30 to 300 seconds in 30 second increments. Press ENTER to save
changes.
Setting TIME and DATE: Use the UP arrow button to select digit. To change digit use the
DOWN arrow button. Press ENTER to save changes.
NOTE: When selected, the year position defaults to “00”
Figure 4: Button Display
Continued next page

Model SR7020iWall Mount Platform Scale
Operating and Service Manual
Part No.MAN7020I_MICROBAN_200520 Page 10 of 16
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected]m Copyright 2020 SInstruments, Inc.
BUTTON FUNCTIONS (CON’T)
ENTER Press to save change in digits for calibration, for unit’s set-up, for time and date set-up and
saving completed calibration data.
UP / SELECT
Press UP to adjust height up from the default for BMI calculation, to increase the scale’s “on
time”, or to select a digit when setting time and date.
DOWN / CHANGE
Press DOWN to adjust the height down from the default for BMI calculation, to decrease the
scale’s “on time”, or to change the value of a selected digit when setting time and date.
BASIC SYSTEM OPERATION
SETTING SYSTEM ZERO
Scale will auto-zero when the platform is first lowered. Make sure the scale is free and clear of any
obstructions. When platform is left down, press and hold the ZERO / WEIGH button. The displayed
message will indicate “HOLD TO ZERO”and count down to zero. Release the button when
display message indicates “HANDS OFF”. Make sure that nothing is in contact with the scale while
zeroing the system. In a few seconds, the display will read “WT = 0.0 Lb”(or Kg).
WEIGHING
Position the patient on the scale. The weight stable indicator “” flashes on the display. When the
weight is stable, the weight stable indicator remains solid. The display will indicate the patient’s
weight in either pounds or kilograms; example: “WT = 123.5 Lb”. The stable weight is auto
stored in memory.
RECALLING LAST STORED WEIGHT
Press to recall last stored weight. The stored weight will be erased when the scale is zeroed or
another stable weight is stored.