Healthweigh Medical Health Scales Installation & Operation Manual

Contents About This Manual ... 1 1.0 Physician Scale ... 3 1.1 Scale Setup... 3

2.0

Handrail Scale ... 5 2.1 Scale Setup... 5

3.0

Wheelchair Scale ... 7 3.1 Scale Setup... 7

4.0

Platform Scale ... 9 4.1 Scale Setup... 9

5.0

Chair Scale ... 10 5.1 Scale Setup... 10

6.0

Scale Configuration ... 11 6.1 Numeric Data Entry... 11 6.2 Programming Mode... 11

7.0 8.0

Scale Calibration ... 16 Scale Operation ... 17 8.0.1 8.0.2 8.0.3

9.0

Weighing... 17 Using the Body Mass Index (BMI) Function... 17 Using the Tare Function... 18

RS-232 Communication ... 19 9.1 Sample and Explanation of ESC Protocol... 22

10.0

Troubleshooting & Testing... 24 10.1 Test Mode... 25

11.0

Maintenance ... 27 11.1 Basic Maintenance... 27 11.2 Cleaning... 27

12.0 13.0

Healthweigh Specifications ... 28 Healthweigh Limited Warranty ... 29

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About This Manual The Healthweigh™ line of scales is used in hospitals, nursing homes, clinics, doctor’s offices and fitness clubs. This manual covers the various models of the Healthweigh line and is intended to familiarize the user with the model’s specifications, setup, calibration, operation, maintenance and troubleshooting of each unit. The various Healthweigh products covered in this manual include: • Physician Scale • Handrail Scale • Wheelchair Scale (photo not shown) • Platform Scale (photo not shown) • Chair Scale Some sections of this manual, like basic calibration, configuration, troubleshooting, maintenance, warranty, and applicable certifications are identical for each Healthweigh scale since they all use the same indicator. The user will be referred to those sections individually. Authorized distributors and their employees can view or download this manual from the Rice Lake Weighing Systems distributor site at www.ricelake.com/health.

Figure 0-1. The Healthweigh Line of Scales

As with all types and models of the Healthweigh line and to prevent injury to patients and damage to your scale, please follow these instructions carefully: • Do not transport the scale while the platform is loaded. • 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. • Do not use around flammable liquids. • Operation at other voltages and frequencies than specified could damage equipment.

1

AC Power Connections

The Healthweigh line of scales has a 120 VAC adaptor or 230 VAC adaptor to use when power is readily available. The AC power adaptor plugs into the back of the indicator as shown in Figure 0-2.

Connect AC power source here. RS-232 Port Connection

Store the 120 VA C a d a p t o r here when not in use.

Store the 230 VAC adaptor here when not in use.

Figure 0-2. AC Power and RS-232 Connection Site

The AC adaptor, when not in use, plugs into the back housing of the Healthweigh indicator. Figure 0-2 shows that location. The Healthweigh line of scales is capable of running its internal sealed lead-acid rechargeable battery if no additional power source is available. Battery life is approximately 75 hours. If the LO Bat indicator is showing on the display, recharge battery or connect scale to an AC power source as soon as possible for accurate weighing. RS-232 Connections

The Healthweigh line of scales is equipped with an RS-232 interface port which enables the unit to be connected to a PC. By using the RS-232 port, weight retrieval information including units of measurement can be sent to the PC. Figure 0-2 shows the RS-232 port location. An optional RS-232 cable (PN 100719) is available should you choose to use RS-232 capabilities. Further information on RS-232 communications refer to Section 9 on page 21.

2

Healthweigh™ Scales Installation & Operation Manual

1.0

Physician Scale

The Healthweigh physician scale is available in three different styles which include: • Eye Level • Waist Level • Floor Level

Figure 1-1. Physician Scale Model - (Floor Level Shown)

Each scale is designed to provide accurate, reliable and repeatable weight measurements and has features that enable a fast and convenient weighing process. The eye and waist level model scales are also designed with a large hook handle and two heavy-duty rear wheels for easy portability.

1.1

Scale Setup

Scale setup is basically the same for all three models of the Healthweigh physician scale. Tools needed for setup include: • 6 mm hex Allen key (included) • 4 mm hex Allen key (included) - needed for height rod only Use the following steps to set up the scale. 1. Remove the scale out of the packaging material that it came in. 2. Unfold and set upright. 3. Tighten the hex screw head very firmly into the hinge at the base of the scale using the 6 mm Allen key to help stabilize the scale. 4. Assemble the height/measuring rod (for the eye level model only). Insert the rod into the pillar base slot and feed the screw into the hole. Using the 4 mm Allen key, tighten the height rod to the scale from the back. 5. For AC operation, connect the AC adaptor cable to the back of the indicator and the AC adaptor plug to a power source.

Physician Scale

3

All Healthweigh scales with the same indicator automatically use the rechargeable batteries to go into recharge mode when the AC adaptor is connected to a power source. When the battery is completely recharged, the LED changes from red to green color as shown in Figure 1-2.

LED indicator light that the battery is charged.

Figure 1-2. LED Light Location

6. To check for scale alignment, put the scale on a flat surface and look at the round spirit level on the base of the scale. The scale is aligned when the air bubble is immediately in the center of the circle. If the air bubble is not centered, unscrew and adjust the scale legs until the air bubble is centered. Ensure that the scale is not resting on its wheels that are used for portability.

4

Healthweigh™ Scales Installation & Operation Manual

2.0

Handrail Scale

The handrail scale is designed for weighing bariatrics and ensures sound accurate weighing information. A non-skid platform paired with side rails assists persons who need extra support and safety. The scale is set up to use motion sensing weighing technology, to determine the actual weight of a moving patient. The weight is displayed on the indicator and can be displayed in pounds or kilograms.

Figure 2-1. Handrail Scale

2.1

Scale Setup

Tools needed for setup include: • 6 mm hex Allen key (included) Use the following steps to set up the scale. 1. Remove the scale out of the packaging material that it came in. 2. Unfold and set upright.

Figure 2-2. Set up Sides to a Vertical Position

Handrail Scale

5

3. 4. 5. 6.

6

Screw in all four legs. Attach the wrap-around rails. Tighten the hex screw head using the 6 mm Allen key to stabilize the scale. For AC operation, connect the AC adaptor cable to the back of the indicator and the AC adaptor plug to a power source. The rechargeable batteries automatically go into recharge mode when the AC adaptor is connected to a power source. When the cable is inserted into the power source, the LED lights up red. When the battery is completely recharged, the LED changes from red to green color as shown in Figure 1-2 on page 4.

Healthweigh™ Scales Installation & Operation Manual

3.0

Wheelchair Scale

The Healthweigh wheelchair scale is a user-friendly, quality scale, designed for safe weighing of the handicapped and mobility challenged individuals. Movement compensating technology ensures sound, accurate weighments. The scale has roll on ramp access, and a non-skid rigid platform and two rear heavy duty wheels for easy manueverability.

Figure 3-1. Wheelchair Scale (with handrail and without handrail models shown)

The scale is set up to use motion sensing technology, to determine actual weight of a moving patient. The weight can be displayed in either pounds or kilograms and you can enter a tare weight. Section 8.0.3 on page 20 of this manual explains the scale operation and how to obtain a tare weight. The wheelchair scale has a unique folding feature that enables easy transportation and simplifies assembly, avoiding the need for field wiring and recalibration. All that is required is to open the packaging and unfold the scale.

3.1

Scale Setup

Tools needed for setup include: • 6 mm hex Allen key (included) Use the following steps to set up the digital wheelchair scale. 1. Take the scale out of the packaging. 2. Unfold into a horizontal position.

Figure 3-2. Unfold Scale Base

Wheelchair Scale

7

3. Screw in all four legs. 4. Tighten the four screws using the 6 mm Allen key to stabilize the scale. 5. For AC operation, connect the AC adaptor cable into the back of the indicator and the AC adaptor plug to a power source. The rechargeable batteries automatically go into recharge mode when the AC adaptor is connected to a power source. When the cable is inserted into the power source, the LED lights up red. When the battery is completely recharged, the LED changes from red to green color as shown in Figure 1-2 on page 4.

8

Healthweigh™ Scales Installation & Operation Manual

4.0

Platform Scale

The Healthweigh platform scale is designed for weighing animals or people and has a non-skid rigid platform for safe weighing. Movement compensating technology ensures sound, accurate weighments.

Figure 4-1. Platform Scale

The Healthweigh platform scale comes with a large stand-alone LCD display that can be set on a table, floor, or mounted on a wall using a built in bracket for mounting.

4.1

Scale Setup

No tools are needed to set up the Healthweigh digital platform scale. It comes complete out of the box. For AC operation, connect the AC adaptor cable into the back of the indicator and the AC adaptor plug to a power source. The rechargeable batteries automatically go into recharge mode when the AC adaptor is connected to a power source. When the cable is inserted into the power source, the LED lights up red. When the battery is completely recharged, the LED changes from red to green color as shown in Figure 1-2 on page 4.

Platform Scale

9

5.0

Chair Scale

The Healthweigh chair scale is an easy to handle, quality scale designed for safe and convenient weighing of patients. Advanced motion-sensing technology compensates for any movement during the weighing process, ensuring sound, accurate weighing information. The scale includes a durable rigid plastic (basic model) or a padded seat (premium model). Both models come with arm supports that fold up for easy entry or exit. Also included are two large wheels and a handrail for easy mobility.

Figure 5-1. Chair Scales (basic model and premium models shown)

5.1

Scale Setup

Use the following steps to set up the Healthweigh chair scale. 1. Remove the ready assembled chair scale out of its packaging. 2. For AC operation, connect the AC adaptor cable to the back of the indicator and the AC adaptor plug to a power source. The rechargeable batteries automatically go into recharge mode when the AC adaptor is connected to a power source. When the cable is inserted into the power source, the LED lights up red. When the battery is completely recharged, the LED changes from red to green color as shown in Figure 1-2 on page 4. 3. To check scale alignment, put the scale on a flat surface and look at the round spirit level on the bean at the back of the scale. The scale is aligned when the air bubble is immediately in the center of the circle. If the air bubble is not centered, unscrew and adjust the scale legs until the air bubble is centered.

10

Healthweigh™ Scales Installation & Operation Manual

6.0

Scale Configuration

Options and parameter setup are done through the scale configuration section and is used for setting values and various parameters and options that are essential for the functioning of the system. Entry into this mode is possible only when the scale is turned off.

6.1

Numeric Data Entry

Use the Kg-Lb key to change the numeric data entry while setting up the various configuration parameters and while in calibration mode. Use the following steps: 1. Press and hold the Kg-Lb key, the rightmost digit on the display will begin to increment. 2. Release the Kg-Lb key to stop the increments. 3. A double click on the Kg-Lb key will cause the right hand digit to move one place to the left. 4. Repeat steps 1-3 until the desired number is reached.

6.2

Programming Mode

To get into the programming modes, hold the Kg-Lb key and the On-Off/Zero key simultaneously until IDENT appears on the display. To change from one parameter to the next, you must press once on the REWEIGH key. To change the value of the parameter, use the Kg-Lb key. From the SAVE phase: press the REWEIGH key to exit and save the modified date. DONE appears for one or two seconds followed by Start and the display enter into weighing mode and is ready to start the weighing process. Various parameters can be set up while in programming mode. 1PXFS
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Table 6-1. Programming Mode Menu Structure

Scale Configuration

11

The following table lists the various display messages and sequence when setting up the scale. NOTE: <-> means that you can toggle between two keys. Step 1

Function With the scale turned off, simultaneously press the On-Off/Zero and Kg-Lb key.

Display

Available Parameters

Enters into programming mode

StArt

Scale automatically advances to Step 2.

2

Indentifies the software ID

IdEnt<->11135

Press the REWEIGH key to advance to the next function.

3

Allows selection of decimal point setting

dOt<->000.0 Default = 0.0

To change the position of the decimal point, press the Kg-Lb key to toggle through the various options. To advance to the next function, press the REWEIGH key.

4

This indicates the maximum allowed weight. Any weight above this value will cause StOP to appear on the display while in the weighing mode.

FULL<->XX.XXX Default= 600 Lb

Use the numeric data entry (explained in Section 6.1 on page 11) to change the value. To advance to the next function, press the REWEIGH key.

5

Display divisions

rOUnd<->XXXX Default = 0.2 Lb

To change the display divisions, press the Kg-Lb key to toggle through the various options. 0.2, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0. To advance to the next function, press the REWEIGH key.

6

Double ranges limit

drAnGe <-> 0

This parameter is preset from the factory. To advance to the next function, press the REWEIGH key.

7

Weight algorithm initial tolerance

A tOL <-> 0

This parameter is preset from the factory. To advance to the next function, press the REWEIGH key.

8

Weight algorithm initial exponent

A LEn <-> 8

This parameter is preset from the factory. To advance to the next function, press the REWEIGH key.

9

Weight algorithm maximal exponent

A t INE <-> 10

This parameter is preset from the factory. To advance to the next function, press the REWEIGH key.

Table 6-2. Programming Mode Menu

12

Healthweigh™ Scales Installation & Operation Manual

Step

Function

Display

Available Parameters

10

Message style on weight algorithm

MESS <-> WEIGH

This displays the message that will show on the indicator display. To change the message, press the Kg-Lb key. WEIGH, LIVE, ----------To advance to the next function, press the REWEIGH key.

11

This allows for setting the baud rate of the RS-232 connection

BAUd <-> Default - 9600

To change the baud rate, use the numeric data entry as shown in Section 6.1 on page 11. To advance to the next function, press the REWEIGH key.

Table 6-2. Programming Mode Menu

Scale Configuration

13

Step

Function

12

Optional features Option 1 allows the selection of unit of measure (UOM) in calibration and programming.

OP1 = 1

Hold the Kg-Lb key for browsing through the options. Double click on the Kg-Lb key to change the options value or to advance to the next function, press the REWEIGH key. OP1 = Unit of measure (UOM) in calibration and programming. 0=Kg 1=Lb

Option 2 allows the scale to work only in Kg.

OP2 = 0

Hold the Kg-Lb key for browsing through the options. Double click on the Kg-Lb key to change the options value or to advance to the next function, press the REWEIGH key. 0=Disable 1= Enable This option works only if Option 3 is disabled

Option 3 allows the scale to work only in Lb.

OP3 = 0

Hold the Kg-Lb key for browsing through the options. Double click on the Kg-Lb key to change the options value or to advance to the next function, press the REWEIGH key. 0=Disable 1=Enable

Option 4, the scale must be stable to show a Kg or Lb weight reading. You can enable or disable this.

OP4 = 0

Hold the Kg-Lb key for browsing through the options. Double click on the Kg-Lb key to change the options value or to advance to the next function, press the REWEIGH key. 0=Disable 1=Enable Note: won’t show lb or kg until the scale is at a standstill.

Option 5 allows for live or dynamic weighing

OP5 = 0

Hold the Kg-Lb key for browsing through the options. Double click on the Kg-Lb key to change the options value or to advance to the next function, press the REWEIGH key. 0=Disable 1=Enable

Option 6 allows you to either enable or disable the hold function on the scale

OP6 = 1

Hold the Kg-Lb key for browsing through the options. Double click on the Kg-Lb key to change the options value or to advance to the next function, press the REWEIGH key. 0=Disable 1=Enable

14

Display

Healthweigh™ Scales Installation & Operation Manual

Available Parameters

Step

13

14

Function

Display

Available Parameters

Option 7 allows you to either enable or disable the baby scale function.

OP7=0

Hold the Kg-Lb key for browsing through the options. Double click on the Kg-Lb key to change the options value or to advance to the next function, press the REWEIGH key. 0=Disable 1=Enable

Option 8 allows you to choose between 9 volts and 6 volts

OP8 = 1

Hold the Kg-Lb key for browsing through the options. Double click on the Kg-Lb key to change the options value or to advance to the next function, press the REWEIGH key. 0=9 volts 1=6 volts

Determines the automatic shut off time when the scale is not in use. Options are between one and 20 minutes. This is used when the unit is battery operated.

t-OFF <-> 5

Press and hold the Kg-Lb key to scroll through the furthest right hand digit on the display (0-9). If you want a value from 10 to 19, with the display sitting at 1, double press the Kg-Lb key and 10 appears. Press and hold the Kg-Lb key to begin scrolling 10-19. If you want a value of 20, with the display sitting at 2, double press the Kg-Lb key and 20 will appear. To advance to the next function, press the REWEIGH key.

StArt or SAvE

If no changes were made in the parameters the display will automatically show StArt and then returns to normal weighing mode. If a parameter was changed, the display will show SAvE then press REWEIGH to save the new parameters.

Table 6-2. Programming Mode Menu

Scale Configuration

15

7.0

Scale Calibration

Before you can calibrate the scale, verify and set all scale parameters which are noted in Section 6.0, Scale Configuration. To do a calibration on the Healthweigh line of scales, the scale must be turned off. Once the scale is turned off, press the Kg-Lb + REWEIGH + On-Off/Zero keys simultaneously. Hold those keys until LOAD appears on the display alternating with the suggested weight for calibration. NOTE: The calibration weight must be no less than 60 lb (28 kg) and no more than 300 lb (135 kg).

The following chart illustrates the calibration procedure. Step 1

Function

Available Parameters

Enters into calibration mode

StArt

The scale automatically advances to Step 2.

Sets the value of the calibration weight you are going to use for calibrating the span value of the scale.

LOAd <-> XXX.X

Use the numeric data entry (explained in Section 6.1 on page 11) to set a calibration weight. To advance to the next function, press the REWEIGH key.

3

CLEAr

Clear the platform and be sure of the scale’s stability. To advance to the next function, press the REWEIGH key.

4

----PUT<->XXXX

Place the requested weight on the scale. This will display for a few seconds. To advance to the next function, press the REWEIGH key.

5

CAL FAC tOr <-> X.XXX

This will be displayed for a few seconds and shows the current calibration factor. To advance to the next function, press the REWEIGH key.

6

SAvE

The scale displays that it has saved that calibration value. Remove the calibration load from the tray. To advance to the next function, press the REWEIGH key.

7

dONE

To save the new calibration, press the REWEIGH key.

8

StArt

Press the ZERO key to exit without saving the calibration.

2

With the scale turned off, simultaneously press and hold the Kg-Lb, On-Off/Zero, and REWEIGH keys.

Display

Table 7-1. Calibration Menu

16

Healthweigh™ Scales Installation & Operation Manual

8.0

Scale Operation

The scales have the capability of performing different operations beyond just calculating weight. The various operating instructions are described below. 8.0.1

Weighing

Use the following steps to weigh a person. 1. Press the On-Off/Zero key to turn on the scale and 0.0 will appear on the display. 2. Ask the patient or person to step onto the scale. The display shows WEIGH, then the person’s weight, and beeps to indicate the end of the weighing process. 3. To reweigh, press the REWEIGH key. 4. To change the display from Kg to Lb and vice-versa, press the Kg-Lb key. 5. To turn off the scale, press and hold the On-Off/Zero key for at least three seconds. 8.0.2

Using the Body Mass Index (BMI) Function

Body mass index (BMI) is the relationship between weight and height associated with body fat and health risk. It is a reliable indicator of body fatness for people and even though BMI does not measure body fat directly, research has shown the BMI correlates to direct measures of body fat. BMI is an inexpensive and easy-to-perform method of screening for weight categories that may lead to health problems for adults. Calculating BMI is one of the best methods for population assessment of overweight and obesity. Because calculation requires only height and weight, it is inexpensive and easy to use for clinicians and for the general public.The calculation is based on the following formulas: Calculate BMI by dividing weight in pounds (lbs) by height in inches (in) squared and multiplying by a conversion factor of 703. Example: weight = 150 lbs, height = 5’5 (65") Calculation: [150 ÷ (65)2] x 703 = 24.96 The standard weight status categories associated with BMI ranges for adults are shown in the following table. BMI

Weight Status

Below 18.5

Underweight

18.5 - 24.9

Normal

25.0 - 29.9

Overweight

30.0 and Above

Obese

Table 8-1. Standard Weight Status

The following examples show weight ranges, the corresponding BMI ranges and the weight status categories for a sample height. Height 5’9”

Weight Range

BMI

Weight Status

124 lbs or less

Below 18.5

Underweight

125 lbs to 168 lbs

18.5 to 24.9

Normal

169 lbs to 202 lbs

25.0 to 29.9

Overweight

203 lbs or more

30 or higher

Obese

Table 8-2. BMI Ranges and Weight Status Example

Use the following steps in determining the BMI. 1. To use the BMI function, weigh the patient as described in Section 8.0.1 and then press the BMI key if weighing in Lbs. The default height of (5 feet) appears on the display. Use the up or down arrows to increase the feet height by one foot increments). Press the BMI key again to display inches (default is 7.0 inches) Again, use the up or down arrows to increase or decrease the inches height by 0.5" increments. The final height value will be displayed as ie: 5-07.5 = 5’ 7.5".

Scale Operation

17

2. If you are weighing in Kgs, the default will be 170.0 cm. Use the up or down arrows to increase or decrease by 0.5 cm increments. 3. To see the patient’s calculated BMI, press the BMI key again. The BMI appears. 4. To cancel the BMI display, press the BMI key. 8.0.3

Using the Tare Function

You can use the tare function for deducting an extra weight (such as a wheelchair, or medical equipment attached to the patient) in a weighing operation. Use the following steps to use the tare function. 1. With the scale set to 0.0, place the extra load on the scale. The display shows WEIGH and then the weight of the load. 2. Press and hold the TARE key for three seconds. The display returns to 0.0 and TARE appears on the left side of the display. 3. Remove the load from the scale. The weight of the load appears with a negative symbol to the left of it. 4. Ask the patient to step onto the scale with the load. The display then shows the patient’s weight without the weight of the load. 5. The weight of the load remains stored in memory, so you can continue to weigh patients who are carrying the same tare weight. For example, when using the same wheelchair for weighing more than one patient. 6. To cancel the tare weight, remove all weight from the scale, and press the TARE key again. TARE then disappears from the display and the display returns back to 0.0. The tare weight is also cancelled when the scale is turned off. Use the following steps to enter a tare without placing that item on the scale. An example of this would be if you’ve got a patient in a wheelchair and the wheelchair has a known weight (has been tagged) you can enter that weight manually. 1. With the scale set to 0.0, press and hold the TARE key so that the tare display comes up and then defaults to 33.0 Lb (15.0 Kg). 2. Use the up or down arrows to scroll through to get the known weight of the wheelchair for example. Once the known weight is reached, press the TARE key one more time and it will remember that weight. 3. Then you can accurately weigh the patient.

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Healthweigh™ Scales Installation & Operation Manual