American Weigh Scales PS-25 postal scale User manual

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American Weigh Scales PS-25 postal scale User manual | Manualzz

PS-25

American Weigh Scales

User Manual

PS-25 (55lb x 0.02lb)

Copyright © 2010 American Weigh Scales, Inc.

All rights reserved. Rev. 2.3

PS-25

Introduction

Thank you for purchasing the American Weigh PS-25 digital postal scale. Please read all operating instructions carefully before use. Scales are precision measuring devices and should always be handled with proper care. To ensure years of reliable service, keep these simple tips in mind:

• Do not exceed the scale’s maximum capacity. Overloading your scale can permanently damage it!

• Avoid exposure to extreme heat or cold. Scales perform best at normal room temperature. If temperatures have changed dramatically, calibration and adjustment may be necessary.

• Allow your scale to warm up for 30-60 seconds before performing calibration and adjustment(if available).

• Store your scale in a clean, dry location. Dust, dirt, and moisture can accumulate on the weighing sensors and electronics causing inaccuracy or malfunction.

• Avoid using your scale in close proximity to strong radio wave emitting devices such as computers, cash registers, and cordless phones.

• Always weigh on a flat and level surface, free from vibrations and drafts. The corner of a room is usually the most stable.

• Gently apply all items to be weighed. Do not drop items onto the weighing platform.

• Avoid dropping your scale. The warranty does not cover damage due to rough treatment or overload.

• Check the batteries first if you are having any trouble with your scale. This simple step can remedy most scale issues.

• Do not disassemble your scale. This product contains no user serviceable parts.

I. Part List

1. Scale

2. Platform

3. AC-Adapter

4. AA Batteries (x2)

II. Key Description

55lb x 0.01lb

25kg x 2g

TARE MODE ON/OFF

AWS-POSTAL

55lb x 0.01lb

25kg x 2g

HOLD

TARE

Key

MODE

Key

ON/OFF

Key

HOLD Key

III. Battery Installation

1. Before using the scale for the first time, check the battery compartment and remove any plastic insulation strips or packaging that may be in place to prevent battery drainage during shipping/storage.

2. If you are replacing the batteries, make sure the positive and negative contacts are properly aligned.

TARE MODE ON/OFF

AWS-POSTAL

PS-25

IV. Operation

1. Place the scale on a flat, level surface and press the ON/OFF key to turn the scale on.

2. Once the start-up process completes and the scale goes to zero you are ready to weigh.

3. Place the quantity to be weighed onto the weighing platform.

4. Wait a couple seconds for the display to stabilize before taking a weight reading.

V. Hold Feature

1. To use the hold feature, first place an item on the scale platform.

2. Press the HOLD button located on the side of the scale.

3. The display will show HOLD and the weight will be held on the display, even after the item is removed. This allows you to record the weight of oversized boxes that cover the display.

4. To return to normal weighing, press the HOLD key again. The

HOLD indicator will turn off.

VI. Changing the Unit of Measure

1. Press the MODE key to change the scales displayed unit of measure.

2. If the scale is turned off then back on, it will default to the last unit used.

• PS-25 Units: lb (pound), kg (kilogram), kg:g (kilogram:gram), lb:oz (pound:ounce)

VII. Using the Tare Feature

You can use this scale’s tare feature to subtract the weight of an empty container or vessel for net weight determination. NOTE: The weight of the container will subtract from the available capacity.

1. Place the empty container or vessel on the weighing platform.

2. Press the TARE key once. The display will then reset to zero.

If the container is removed, it’s weight will be displayed as a

negative number.

3. You may now fill the container with the quantity to be weighed.

The display will show the net weight of the contents.

4. To return to normal weight display (gross weight), remove any items from the weighing platform and press the TARE key again to re-zero the scale.

VIII. Calibration (Advanced Users Only)

Calibration and adjustment are performed at the factory. Only trained technicians should perform calibration and adjustment if the scale is not weighing properly. Do not proceed with calibration without the proper 10kg weight with class M2 or better or you could cause your scale to be inaccurate.

Calibration is not covered under warranty.

1. Place the required calibration weight on the scale and note the displayed value.

2. If the displayed value is not within acceptable tolerance (see chart below), adjustment is required.

Model

PS-25

Acceptable

Tolerance (±)

4g

Calibration

Weight

10kg

Recommended

Accuracy Class

OIML M2

IX. Adjustment (Advanced Users Only)

1. Press and hold the MODE key until the display shows “CAL”.

2. Press the MODE key again. The display will flash “CAL” followed by the calibration weight value (see chart).

3. Place the required calibration weight on the center of the platform.

4. The display will show “PASS” then return to normal weighing

PS-25 mode. Calibration is complete!

X. Troubleshooting

Problem: Scale will not turn on

Solution: Check the batteries or AC adapter

Problem: Displayed weight fluctuates randomly

Solution: Make sure your workspace is stable and free of any air currents, vibration, or magnetic fields

Problem: Displayed weight is inaccurate

Solution: Perform a calibration adjustment

XI. Error Codes

1. OUTZ - Zero range has shifted. Perform calibration adjustment.

If the problem persists, the load cell may be permanently damaged due to overloading.

2. O-LD - Maximum capacity exceeded. Remove the extra weight to avoid damaging the load cell.

3. L - Batteries are low. Replace the batteries.

Max. Capacity

Readability

Min. Capacity

Power

Platform Dimensions

Warranty

PS-25

25kg / 55lb / 55lb:0.0oz

2g / 0.02lb / 0.2oz

6g / 0.2oz

2 x AA Batteries or AC Adapter

8.0 x 8.0 x 2.8 in.

10 Year Limited Warranty

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