SR Instruments SR Scales SRV415 Service manual

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 1 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
S
by S Instruments, Inc.
Operating and Service
Manual
Model SRV415
Multi-Purpose Floor Scale

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 2 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
TABLE OF CONTENTS
PACKING CHECKLIST –MODEL SRV415...............................................................................3
ASSEMBLY.......................................................................................................................................3
SYSTEM DESCRIPTION AND INTENDED USE.......................................................................4
STORAGE AND TRANSPORTATION ........................................................................................4
CLEANING AND DISINFECTING...............................................................................................5
SPECIFICATIONS...........................................................................................................................6
BUTTON FUNCTIONS...................................................................................................................7
BASIC SYSTEM OPERATION......................................................................................................8
BATTERY REPLACEMENT.........................................................................................................8
CALIBRATION................................................................................................................................9
TROUBLESHOOTING.................................................................................................................12
WARRANTY...................................................................................................................................13
TABLE OF FIGURES
Figure 1: SRV415 Battery Installation ..........................................................................................3
Figure 2: SRV415 Button Label .....................................................................................................7
Figure 3: Calibration Button ..........................................................................................................9
Figure 4: Select and Toggle Calibration Buttons..........................................................................9

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 3 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
PACKING CHECKLIST –Model SRV415
Multi-Purpose Floor Scale
ASSEMBLY
STEP 1: Unpack the scale system and check parts against the PACKING CHECKLIST. If
there are any missing or damaged parts, call the Service Hotline at: 1-800-654-6360.
STEP 2: Unlatch tab on the battery compartment cover on bottom of scale (Figure 1). Insert
batteries according to instructions on the battery compartment holder. Replace battery
compartment cover.
STEP 3: Place the SRV415 scale system on a flat, hard table top or floor surface. Ensure all four
corners of scale are in contact with the table top or floor and scale does not rock.
NOTE: Scale should not be placed on carpet or uneven floor surfaces as this may interfere with
scale accuracy.

DESCRIPTION
QUANTITY
PLATFORM SCALE
1 ea.
“AA” BATTERY
6 ea.
CERTIFICATE OF CALIBRATION
1 ea.
WARRANTY CARD
1 ea.
MANUAL
1 ea.
Figure 1: SRV415 Battery Installation

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 4 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
SYSTEM DESCRIPTION and INTENDED USE
SYSTEM DESCRIPTION:
The SRV415 Multi-Purpose Floor Scale has a low profile design, which allows for easy step
access and can be used in a fixed location or as a portable scale.
The SRV415 Multi-Purpose Floor Scale 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 weight.
Weight is displayed on a LCD screen. With a push of a button, weight data may be viewed in
either pounds or kilograms.
INTENDED USE:
The SRV415 Multi-Purpose Floor Scale is designed for table-top use or for stand-on floor use in
weighingupto a maximumof 500 pounds (227 kilograms).
STORAGE and TRANSPORTATION
To maintain proper operation of this instrument, 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).
WARNING
DO NOT EXCEED
MAXIMUM WEIGHT LIMIT OF
500 LB / 227 KG
DO NOT USE FOR ANIMAL TRANSPORT

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 5 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] 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.

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 6 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
SPECIFICATIONS
MAXIMUM WEIGHT
CAPACITY
500 lb (227 kg)
DIMENSIONS
26.4 in x 18.3 in x 1.6 in (67 cm x 47 cm x 4 cm)
DISPLAY TYPE
1.0” LCD Display
DISPLAY RESOLUTION
+/- 0.1 lb (0.1 kg)
ACCURACY
0.2% +/- 1 digit of displayed resolution for calibrated range
AUTO ZERO
One button operation
AUTO POWER DOWN
Approximately 60 seconds (1 minute)
AVERAGING
Automatic digital filter
POWER SUPPLY
Six (6) “AA” 1.5 volt alkaline batteries
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% to 85%
Avoid exposure to high-pressure water or steam
TRANSPORATION AND
STORAGE
Storage conditions should not vary outside the following
conditions:
Ambient Temperature: 14F to 122F (-10C to +50C)
Relative Humidity 0% to 85%
Remove batteries if storing longer than three (3) months

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 7 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
BUTTON FUNCTIONS
HOLD/RECALL
The “Hold/Recall” button freezes the displayed weight and stores it away in memory. Press
“Hold/Recall” to store the weight into memory.
To recall last weight reading, press “Hold/Recall” button once scale has shut down.
LB/KG
Weight data may be viewed in either pounds or kilograms. Pressing the “lb/kg” button allows the
operator to toggle between the two readings.
ZERO/WEIGH
The “Zero/Weigh” button is used to zero the system before using the scale system. Ensure that
nothing is in contact with the weighing surface during this procedure. The display will read “0.0
Lb” (or 0.0 kg).
The “Zero/Weigh”button also wakes up the display and shows the weight if it should Auto
Power Down before the weighing process is done.
Figure 2: SRV415 Button Label

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 8 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
BASIC SYSTEM OPERATION
SETTING SYSTEM ZERO:
Make sure the scale is free and clear of any obstructions. Press and hold the
“Zero/Weigh” button to zero the system. In a few seconds, the display will read
“0.0 Lb” (or 0.0 kg). It is recommended that the system be zeroed prior to each
use.
The display will indicate weight in either pounds or kilograms. If scale shuts down, press the
“Zero/Weigh” button once to wake display and take reading.
HOLD/RECALL:
The scale display is designed to automatically lock the reading on the display and
store the reading in memory, once the weight is stable. If scale cannot lock in
reading due to movement, press the “Hold/Recall” button to automatically lock
the display and store the reading.
To return to WEIGH mode when finished, press the “Zero/Weigh” button once. The display will
become active.
Once the scale has shut down, the last stored weight can be recalled by pressing the “Hold/Recall”
button. The last stored weight will be displayed until the scale shuts down or the “Zero/Weigh”
button is pressed.
DISPLAY INDICATORS
Scale is zeroed and stabilized
Applied weight load has stabilized
BATTERY REPLACEMENT
The display will read “LobAt” when batteries are low and need to be changed.
STEP 1: Turn the scale over and locate the battery cover (Figure 1). Press the latch in and remove
the battery cover.
STEP 2: Remove and replace all six (6) 1.5 volt “AA” batteries.
STEP 3: Press the “Zero/Weigh” button to confirm display is working.
STEP 4: Place battery cover back on and secure latch in place.
STEP 5: Zero the system.
o

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 9 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
CALIBRATION
INITIAL SYSTEM SETUP
When initially set up, calibration is factory set and re-calibration is not needed. The Local
Gravitational Acceleration may have to be re-set for the current geographical location for
improved accuracy. Automatic Shut Off is shipped with a factory default of 60 seconds. If a longer
period of time (up to 900 seconds) is desired, then it will need to be re-set. Both procedures are
found next.
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. Re-calibration is generally not required, but should be verified
periodically to ensure accuracy. The recommendation for calibration check is at least
once every 12 months, or as individual maintenance policy requires.
SELECT
BUTTON
TOGGLE
BUTTON
Figure 4: Select and Toggle Calibration Buttons
REMOVE BOTTOM
COVER AND PRESS
CALIBRATION BUTTON
Figure 3: Calibration Button
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.

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 10 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
CALIBRATION: (Cont’d)
ACCESS SYSTEM SETUP
To access all settings below, remove the feet, spacers and the seven screws holding on the bottom cover.
Press the calibration button (Figure 3) and CAL mode is now active.
The Right Button allows you to toggle through the menus without saving any parameters. The Left
Button permits amenu item to be selected or a parameter saved (Figure 4).
NOTE: Ensure that nothing is in contact with the scale system during this procedure. Remove
hands from the system when noting the displayed calibration results.
CAL MENU
“data” Displays saved calibration and model information.
“unit” Set the available units; lb only, kg only, or selection of lb or kg with mode button.
“sec” Set Auto Power Down Timer between 15 and 900 seconds.
“grav” Set Gravitational Acceleration in m/s2.
“Full” Applied calibrated mass at full scale.
“Half” Used only with three point calibration curve. Applies calibrated mass at a second
point between zero and full scale, usually at half.
“zero” No calibrated weight applied.
“2 pt” Two-point calibration curve, zero and full scale.
“3 pt” Three-point calibration curve; zero, half and full scale.
“save” Saves the calibration data.
“quit” Quits without saving the calibration data.
Enter CAL Mode
To enter the CAL mode, press the calibration button (Figure 3). Toggle through the menu
with Right Button (Figure 4). Select or Save data with the Left Button (Figure 4).
Auto Power Down Timer (Optional)
a) Select the Auto Power Down Timer from the CAL menu by pressing the Left Button
when the display shows “sec”.
b) The display will show four digits <0123>.
c) Set the desired time in seconds by selecting the first digit and toggle through the digits
using the Right Button until desired value is shown. Press the Left Button and continue
the same with the remaining digits. The value cannot be less than 15 or greater than
900.
d) Press the Left Button to save or Right Button to toggle to "quit". Select "quit" by
pressing the Left Button to quit without saving changes.
e) Press the Left Button again to save and the display will show “SAV’d”.

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 11 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
CALIBRATION: (Cont’d)
Gravitational Acceleration (Optional)
NOTE: Setting the local gravitational acceleration, “gLOC”, will not affect the
calibration. The local gravitational acceleration, “gLOC”, will become the
calibrated gravitational acceleration, “gCAL”only when it is recalibrated.
a) Select the Gravitational Acceleration from the CAL menu by pressing the Left Button
when the display shows “grav”.
b) The display will show only the four digits to the right of the decimal point <9.XXXX>.
c) Set the local gravitational acceleration in m/s2by selecting the first digit and toggle
through the digits using the Right Button until desired value is shown. Press the Left
Button and continue the same with the remaining digits.
d) Press the Left Button to save or Right Button to toggle to "quit". Select "quit" by
pressing the Left Button to quit without saving changes.
e) Press the Left Button again to save and the display will show “SAV’d”.
Full-Scale value
a) Select the Full-Scale from the CAL menu by pressing the Left Button when the display
shows “FULL”.
b) The display will show only the five digits <XXXX.X> with the thousand-place
flashing <1>. Select past to the next digit by pressing the Left Button.
c) Once in the hundreds-place, set the full scale value (maximum weight capacity) by
toggling using the Right Button through the digits until desired value is shown. Select
the desired value by pressing the Left Button and continue the same with the remaining
digits.
d) Press the Left Button to save or Right Button to toggle to "quit". Select "quit" by
pressing the Left Button to quit without saving changes.
e) Press the Left Button again to save and the display will show “SAV’d”.
Half-Scale value
NOTE: The Half-Scale value is used only with the three-point calibration. It is a value
between zero and the Full Scale values. It is usually close to half of the Full Scale
value.
a) Select the Half-Scale from the CAL menu by pressing the Left Button when the display
shows “HALF”.
b) The display will show only the five digits <XXXX.X> with the thousand-place
flashing <1>. Select past to the next digit by pressing the Left Button.
c) Once in the hundreds-place, set the half scale value by toggling using the Right Button
through the digits until desired value is shown. Select the desired value by pressing the
Left Button and continue the same with the remaining digits.
d) Press the Left Button to save or Right Button to toggle to "quit". Select "quit" by
pressing the Left Button to quit without saving changes.
e) Press the Left Button again to save and the display will show “SAV’d”.

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 12 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
CALIBRATION: (Cont’d)
Calibrate using the Three-Point Calibration Curve; zero, half scale, and full scale.
NOTE: The scale can also be calibrated with a Two-point slope “2Pt”, although it will
not be as accurate.
NOTE: Select known calibrated weights, traceable to NIST. DO NOT USE barbells or
uncalibrated weights. The displayed calibrated weight should be within the Accuracy
tolerance as listed in the “SPECIFICATIONS” table on page 6.
a) Select Three-point calibration curve from the CAL menu by pressing the Left Button
when the display shows “3Pt”.
b) Apply no load and ensure stability. Zero the scale by pressing the Left Button when the
display shows “zero”.
c) Display will show “HALF”, apply the predetermined half scale value on the scale and
press the Left Button.
d) Display will show “FULL”, apply the predetermined full scale value on the scale and
press the Left Button.
e) Display will show “SAVE”, press the Left Button to save, display will show “SAV’d”
or Right Button to toggle to "quit". Select "quit" by pressing the Left Button to quit
without saving changes.
f) Save the parameter changes while in the CAL mode by pressing the Left Button when
the display shows “SAVE”. To exit the CAL mode without saving the changes press
the Left Button when the display shows “quit”.
g) Press thecalibration button (Figure 3) and re-attach thebottom cover, spacers and feet.
NOTE: The displayed calibrated weight should be within the Accuracy tolerance as listed in
the “SPECIFICATIONS” table on page 6.
TROUBLESHOOTING
SYMPTOM
REASON/CORRECTIVE ACTION
Weight reading is much lower than
expected.
Check that the platform is clear underneath, stand on
each of the four corners to see if one corner is not
weighing correctly.
System fails to perform correctly or
turn on.
Check to ensure batteries are installed correctly.
Ensure the scale is clear of any obstacles and that
nothing is touching the scale.
Set scale on smooth, hard floor surface.
For additional information or assistance, telephone our Service Hotline: [phone]
or e-mail: [e-mail]

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 13 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
WARRANTY
TWO (2) YEAR LIMITED WARRANTY
Each Ssystem is manufactured with high quality components. SR Instruments, Inc.
warrants that all new equipment will be free from defects in material or workmanship, under
normal use and service, for a period of two (2) years from the date of purchase by the original
purchaser. Normal wear and tear, injury by natural forces, user neglect, and purposeful destruction
are not covered by this warranty. Warranty service must be performed by the factory or an
authorized repair station. Service provided on equipment returned to the factory or authorized
repair station includes labor to replace defective parts. Goods returned must be shipped with
transportation and/or broker charges prepaid. SR Instruments, Inc.’s obligation is limited to
replacement of parts that have been so returned and are disclosed to SR Instruments, Inc.’s
satisfaction to be defective. The provisions of this warranty clause are in lieu of all other
warranties, expressed or implied, and of all other obligations or liabilities on 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. be liable for any subsequent or special damages. Any misuse, improper
installation, or tampering, shall void this warranty.
DAMAGED SHIPMENTS
Title passes to purchaser upon delivery to Transportation Company. Purchaser should file any
claims for shortage or damage with the delivery carrier and should refuse any shipment that has
obvious external damage.
RETURN POLICY
All products being returned to SR Instruments, Inc. require a Return Goods Authorization number
(RGA). To receive an RGA, call our Customer Service at 716-693-5977 ext 103 or toll-free in the
USA and Canada at 800-654-6360 ext 103.
When inquiry is made, please supply model and serial numbers, purchase order and reason for
return.
Generally, deleted, damaged, and outdated merchandise will not be accepted for credit. A
minimum restocking charge of 15% will be assessed on return of current merchandise unless scale
is returned because of SR error.
No returns will be accepted after 30 days.
All returns are to be shipped FREIGHT PREPAID to: SR Instruments, Inc., 600 Young Street,
Tonawanda, NY 14150.
RESTOCKING FEE
15% fee will be assessed on return of current merchandise
No fees will be charged if the scale is returned because of an error on the part of SR
Instruments, Inc.
No returns accepted after 30 days.

Model SRV415 Multi-Purpose Floor Scale
Service Manual
Part No. MAN415_200714 Page 14 of 14
SInstruments, Inc., 600 Young Street, Tonawanda, NY 14150
Tel: [phone] Fax: [phone] URL: www.srscales.com
email: [email protected] Copyright 2020 SInstruments, Inc.
S
By SInstruments, Inc.
Precision & Technology in
Perfect Balance