Rice Lake RL-DBS Operating instructions

118764 - Rev A
RL-DBS
Digital Baby Scale
Technical & Operating
Instructions
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Contents
1.0 Introduction.................................................................................................................................. 1
2.0 Assembly Instructions ................................................................................................................. 2
3.0 Scale Setup.................................................................................................................................. 3
4.0 Scale Operation ........................................................................................................................... 4
5.0 Calibration ................................................................................................................................... 5
6.0 Troubleshooting & Testing........................................................................................................... 6
7.0 Maintenance ................................................................................................................................ 7
7.1 Basic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
8.0 Specifications.............................................................................................................................. 7
RL-DBS Digital Baby Scale Limited Warranty ..........................................................................................8
Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com or obtained
by calling 715-234-9171 and asking for the training department
©2011 Rice Lake Weighing Systems. All rights reserved. Specifications subject to change without notice.
May, 2013

ii Technical and Operating Instructions
Rice Lake continually offers web-based video training on a growing selection
of product-related topics at no cost. Visit www.ricelake.com/webinars.

1
1.0 Introduction
The RL-DBS Digital Baby Scale provides precise weighing of babies. Highly sophisticated microprocessor
technology allows accurate, reliable, and repeatable weighments every time. Movement compensation
technology eliminates errors caused by spontaneous movement of the baby and the weight display can be
displayed in pounds/ounces or in kilograms.
This manual can be viewed and downloaded from the Rice Lake Weighing Systems web site at
www.ricelake.com/health. Rice Lake Weighing Systems is an ISO 9001 registered company.
Figure 1-1. RL-DBS Digital Baby Scale
With the RL-DBS Digital Baby Scale, there are certain precautions that should be taken to prevent injury to the
baby and damage to your scale. Please follow these instructions carefully;
• Do not transport the scale while the infant is on the weighing tray.
• Do not drop the scale or subject it to violent shocks.
• For accurate weighing, the scale must be placed on a flat, stable surface.
• For accurate weighing, verify proper operation according to the procedure described in this manual
before each use.
• Do not use around flammable liquids.
• Operation at other voltages and frequencies than specified could damage your equipment.
Standard Features
• Convenient LB/KG toggle key
• Large, easy-to-read 1 inch LCD (Liquid Crystal Display)
• Built in measuring tape
• Recall key to view the last weight measurement
• Power: four AA batteries (included), 120V or 230V AC adaptor (included)
• Automatic shut off ensures long battery life.
Internet

2Technical and Operating Instructions
2.0 Assembly Instructions
The RL-DBS Digital Baby Scale comes fully assembled and includes the scale and a 120V or 230V AC adaptor.
To set up the scale:
1. Select a sturdy, flat surface on which to place the scale on.
2. Plug in the 120V or 230V AC adaptor. The AC power adaptor plugs into the back of the indicator as
shown below in Figure 2-1.
Figure 2-1. AC Power Connection Site
The RL-DBS Digital Baby Scale is also capable of running on four (4) AA batteries if no additional power
source is available. If the Lo prompt is showing on the display, replace the battery or connect the scale to an AC
power source as soon as possible for accurate weighing.
Figure 2-2. Low Battery Indicator
AC Power Plug in
Location

Technical and Operating Instructions - Scale Setup 3
3.0 Scale Setup
Figure 3-1. RL-DBS Display
Use the following table to identify what each part of the display does.
Item Description Function
ON/TARE key
On Function:
One short push for On
One push for Off (approx. five seconds)
Tare Function:
One short push to Tare out the scale
This key turns the scale on and off
With weight on the scale, press this key to
tare out the scale and return it to zero.
LB/KG key
One short push
This key selects either pounds/ounces or
kilograms.
RECALL key
When the scale is turned on, use one short
push
This allows the user to recall the last
weighment, ie: you can remove the baby,
press the recall key and see the baby’s
weight again.
Negative or Minus indicator When the scale is on, this display shows a
negative weight reading.
zero ZERO indicator When the scale is on, this display indicates
that the scale is stable and ready for use.
mem Memory indicator
Motion indicator This is displayed when a weight reading is
complete.
It is not displayed while the weight reading is
being calculated.
6-Digit LCD digital display The LCD displays the infant weight in
pounds/ounces or kilograms and shown by
the LB or KG indicator on the right side of
the display.
LB/OZ indicator When the scale is on, this display indicates
that the scale is weighing in pounds/ounces
KG When the scale is on, this display indicates
that the scale is weighing in kilograms
Table 3-1. Front Panel, Showing Annunciators
ON/TARE
LB/KG
RECALL
zero mem
ON/TARE
LB/KG
RECALL
o

4Technical and Operating Instructions
The RL-DBS Digital Baby Scale is pre-calibrated from the factory.
Use the following steps to set up your RL-DBS Digital Baby Scale when you initially power it up.
1. To operate the unit using the AC adaptor, plug the AC adaptor cable into the back of the scale as shown
in Figure 2-1, and the AC adaptor plug into a power source.
2. Press the ON/TARE key to turn on the scale.
3. When the self test function is complete, the digital display should read: 0:00.00 if set up in Lb/Oz or 0.00
if set up to read in Kg.
4. Place a weight (not exceeding 40 lb) on the scale. The weight calculation is complete once the motion
indicator turns on.
5. Press the LB/KG key to select the weight mode, either in pounds/ounces or kilograms.
6. Remove the weight from the scale. If you want to view the weight that was just on the scale, press the
RECALL key.
If the setup procedure failed, refer to the troubleshooting section of this manual. If the problem is not
resolved, refer to a qualified service provider.
4.0 Scale Operation with Tare
The RL-DBS Digital Baby Scale can accurately weigh babies up to 44 Lb (20 Kg). Use the following steps to
weigh a baby.
1. Press the ON/TARE key to turn the scale on.
2. Wait until the 0:0.0 (if set up in Lb/Oz) appears on the digital display or 0.00 if set up in Kg.
3. Place a pad on the weighing tray. Make sure that the edges of the pad are on the tray and are not touching
the surface on which the scale is positioned. The weight calculation is complete once the motion
indicator turns on ( ).
4. Press the ON/TARE key to tare the weight of the pad or other accessory that is on the weighing tray. The
display should return to zero.
5. Place the infant on the scale. The weight calculation is complete once the motion indicator turns 
on ( ).
If the scale is being used with batteries and is not used for two minutes, it switches off to save battery life
and power. To restart the scale, press the ON/TARE key.
Note
Note
o
o
Note

Technical and Operating Instructions - Calibration 5
5.0 Calibration
To perform a calibration, connect the AC adaptor or install four (4) AA batteries and ensure that the scale is
sitting on a level surface.
The scale can be calibrated with either Lb or Kg weights. The unit is defaulted to calibrate with Lb weights so if
you are using LB weighs, proceed to Steps 1-7 (below). If you want to calibrate using Kg weights, perform Steps
A through D first and then proceed on to Steps 1-7.
A. Press and hold the LB/KG and the ON/TARE keys until the scale displays CAL. Release the keys and the
scale now displays the raw A/D counts.
B. Press the RECALL key and the display shows CAL with the LB indicator on. Press the LB/KG key to switch
between LB and KG and the display will now show CAL with the KG indicator on.
C. Press the ON/TARE key until the scale turns off.
D. Proceed to steps 1-7 shown in Table 5-1.
The following chart illustrates the calibration procedure.
Step Display
1To enter the Calibration Mode, press and hold the LB/KG
key and then press the ON/TARE key to turn on the scale.
- CAL -
then the raw A/D counts
2Press the ON/TARE key again. LB: Shows C20 w/ LB indicator symbol on
KG: Shows C10 w/ KG indicator symbol on
3When the scale returns back to zero, load the scale with a
20 LB (10 KG if calibration is set to KG), test weight and
press the ON/TARE key.
LB: Shows C40 w/ LB indicator symbol on
KG: Shows C20 w/ KG indicator symbol on
4When the scale returns back to zero, load the scale with a
40 LB (20 KG if calibration is set for KG), test weight and
press the ON/TARE key to finish the calibration.
- End -
5Unit turns off automatically
6Remove the 40 Lb (20 KG) weight from the scale.
7Press the ON/TARE key to turn on the scale and place a
known weight onto the baby tray to confirm the correct
weight. If not, perform calibration again.
Table 5-1. Calibration Menu

6Technical and Operating Instructions
6.0 Troubleshooting & Testing
Refer to the following instructions to check and correct any failure before consulting service personnel.
Symptom Possible Cause Corrective Action
Scale does not turn on when using just
batteries
Dead batteries Connect the scale to a power source or
change batteries
Scale does not turn on Dead battery Connect the scale to a power source
Faulty electrical outlet Use a different electrical outlet
Bad power supply Replace adaptor
Questionable weight or the scale does
not zero
External object is interfering with the scale Remove the infant/interfering object from
the weighing tray from the scale
Display did not show 0.0 before weighing Remove the infant, zero the scale and
begin the weighing process again
Scale is not placed on a level surface Place the scale on a stable surface and
begin the weighing process again
The weighing tray is not placed properly Place the weighing tray in its proper place
Scale is out of calibration Check the scale with a known weight
value
The display shows o_Ld message The load on the scale exceeds the
capacity
Remove the excess weight and use the
scale according to its stated limit
The display show Err The RECALL key was pressed with
insufficient weight on the scale.
Place more than 2 Lb, 30 Oz on the scale
Table 6-1. Troubleshooting Table