OHAUS Valor 1000 Bedienungsanleitung

ValorTM 1000 Series

Service Manual

TABLE OF CONTENTS

Ohaus Corporation www.ohaus.com i Valor 1000 Series Service Manual

Page No.

1GETTING STARTED 1

1.1 Introduction 1

1.2 Service Facilities 1

1.3 Technical Data 2

1.4 Tools and Test Equipment Required 2

1.5 Specification 2

1.6 Controls 5

1.6.1 Overview of the Controls 5

1.6.2 Main Application Screen 5

1.6.3 Turning Scale On/Off 6

1.6.4 Weighing 6

1.7 Legal for Trade (LFT) 6

1.7.1 Settings 6

1.7.2 Verification 6

1.7.3 Sealing 6

2DIAGNOSTIC GUIDE 8

2.1 Trouble Shooting 8

2.2 Diagnostic Guide 8

2.2.1 Diagnosis: 8

2.2.2 Checking Load Cells for Trouble 9

3MAINTENANCE / REPAIR PROCEDURES 11

3.1 Preventive Maintenance 11

3.2 Opening the Scale 12

3.3 Removing/Replacing the Main PCB 13

3.4 Removing/Replacing the Rear Display PCB 14

3.5 Removing/Replacing the Load Cell 15

3.6 Setting the Overload Stops 16

3.7 Replacing the Port PCB 17

3.8 Replacing the Function Label 18

4TESTING 19

4.1 Test Masses Required 19

4.2 Performance Tests 19

4.2.1 Precision Test 20

4.2.2 Repeatability Test 20

4.2.3 Linearity Test 22

4.2.4 Off-Center Load Test 23

4.2.5 Adjusting Off Center Load 23

5PARTS LISTS & DIAGRAMS 26

5.1 Non-Approved Models Spare Parts 26

5.2 Approved Models Spare Parts 28

APPENDIX A –SERVICE MENU 30

A.1 Service Menu Structure 30

A.2 Service Calibration 31

CHAPTER 1 - GETTING STARTED

Valor 1000 Series Service Manual 1Ohaus Corporation www.ohaus.com

1 GETTING STARTED

1.1 Introduction

This service manual contains the information needed to perform routine maintenance and

service on the Ohaus Valor 1000 Series scales. Familiarity with the balance’s Instruction

Manual is assumed. The contents of this manual are contained in five chapters:

Chapter 1 Getting Started –Contains information on service facilities, tools and test

equipment, specifications, and the mechanical and electronic functions of the scale.

Chapter 2 Troubleshooting –Contains a diagnostic guide and error code table.

Chapter 3 Maintenance Procedures –Contains preventive maintenance procedures and

disassembly, repair and replacement procedures.

Chapter 4 Testing –Contains a list of required test masses, an operational test, segment

display test, performance tests and adjustments.

Chapter 5 Drawings and Parts Lists –Contains exploded views of Valor 1000 scales

identifying all serviceable components.

Appendix A Standard Calibration –Explains procedures for Standard Calibration,

performed prior to using a scale, and after service.

1.2 Service Facilities

To service a balance, the service area should meet the following requirements:

Should be temperature controlled and meet scale specifications for temperature

environmental requirements.

Must be free of vibrations such as fork lift trucks close by, large motors, air currents or

drafts from air conditioning/heating ducts, open windows, people walking by, fans, etc.

Area must be clean and free of excessive dust.

Work surface must be stable and level.

Scale must not be exposed to direct sunlight or radiating heat sources.

Use an approved Electro-Static Device

CHAPTER 1 - GETTING STARTED

Valor 1000 Series Service Manual 2Ohaus Corporation www.ohaus.com

1.3 Technical Data

Equipment Ratings: Indoor use only

Altitude: 2000m

Operating temperature: 0 to 40°C

Humidity: Maximum relative humidity 80% for temperatures up to 31 °C decreasing linearly

to 50% relative humidity at 40°C.

Electrical supply: 12VDC, 0.5A. For use with certified or approved power supply, which

must have a SELV and limited energy circuit output.

Voltage fluctuations: Mains supply voltage fluctuations up to ±10% of the nominal voltage.

Overvoltage category (Installation category): II

Pollution degree: 2

1.4 Tools and Test Equipment Required

Common hand tools

Standard electronics tool kit

1.5 Specification

Specifications for the Ohaus Valor 1000 Series scales are listed in Table 1-1, Table 1-2 and

Table 1-3. When a scale has been serviced, it must meet the specifications listed in the table.

Before servicing the scale, determine what specifications are not met.

TABLE 1-1. SPECIFICATIONS –NON-APPROVED MODELS

Model*

V12P3

V12P6

V12P15

V12P30

Capacity ×Readability

(Max x d non-

approved)

6 lb x 0.001 lb

3 kg x 0.0005 kg

3,000 g x 0.5 g

96 oz x 0.02 oz

6 lb x 0.02 oz

15 lb x 0.002 lb

6 kg x 0.001 kg

6,000 g x 1 g

240 oz x 0.5 oz

15 lb x 0.5 oz

30 lb x 0.005 lb

15 kg x 0.002 kg

15,000 g x 2 g

480 oz x 0.1 oz

30 lb x 0.1 oz

60 lb x 0.01 lb

30 kg x 0.005 kg

30,000 g x 5 g

960 oz x 0.2 oz

60 lb x 0.2 oz

Maximum Displayed

Resolution

1:6,000

1:7,500

1:6,000

Repeatability

0.001 kg

0.002 kg

0.005 kg

0.01 kg

Linearity

±0.001 kg

±0.002 kg

±0.005 kg

±0.01 kg

Weighing Units

g, kg, lb, oz, lb:oz

Application Mode

Weighing

Tare Range

To capacity by subtraction

Stabilization Time

≤2 seconds

Power requirements**

4 x D cell Alkaline battery, AC adapter or rechargeable battery

Calibration

Digital with external weight

Typical Battery Life

1500 hours with backlight turned off

Construction

ABS plastic housing, stainless steel pan

Safe Overload

150% of capacity

Specified Temperature

Range

32 to 104°F / 0 to 40 °C

Display Type

Single display, LCD with white backlight

Display Size

1.0 in / 25.4 mm

CHAPTER 1 - GETTING STARTED

Valor 1000 Series Service Manual 3Ohaus Corporation www.ohaus.com

Pan Size

9.65 x 7.48 in / 245 x 190 mm

Scale Dimensions (W

x D x H)

10.2 x 10.6 x 4.8 in / 260 x 270 x 122 mm

Shipping Dimensions

(W x D x H)

12.6 x 12.6 x 6.9 in / 319 x319 x175 mm

Net Weight

5.5 lb / 2.5 kg

Shipping Weight

6.8 lb / 3.1 kg

TABLE 1-2. SPECIFICATIONS –APPROVED MODELS

Model

V12P2T

V12P5T

V12P10T

V12P20T

Capacity ×Readability

(Max x d non-approved)

5 lb x 0.0005 lb

2 kg x 0.0002 kg

2,000 g x 0.2 g

80 oz x 0.01 oz

10 lb x 0.001 lb

5 kg x 0.0005 kg

5,000 g x 0.5 g

160 oz x 0.02 oz

20 lb x 0.002 lb

10 kg x 0.001 kg

10,000 g x 1 g

320 oz x 0.05 oz

50 lb x 0.005 lb

20 kg x 0.002 kg

20,000 g x 2 g

800 oz x 0.1 oz

Maximum Displayed

Resolution

1:10,000

Certified Capacity ×

Readability

(Max x e approved)

5 lb x 0.002 lb

2 kg x 0.001 kg

2,000 g x 1 g

80 oz x 0.05 oz

10 lb x 0.005 lb

5 kg x 0.002 kg

5,000 g x 2 g

160 oz x 0.1 oz

20 lb x 0.01 lb

10 kg x 0.005 kg

10,000 g x 5 g

320 oz x 0.2 oz

50 lb x 0.02 lb

20 kg x 0.01 kg

20,000 g x 10 g

800 oz x 0.5 oz

Approved Resolution

1:2,000

1:2,500

1:2,000

Repeatability

0.001 kg

0.002 kg

0.005 kg

0.01 kg

Linearity

±0.001 kg

±0.002 kg

±0.005 kg

±0.01 kg

Class

Class III NTEP / Measurement Canada

Weighing Units

g, kg, lb, oz

Application Mode

Weighing

Tare Range

To capacity by subtraction

Stabilization Time

≤2 seconds

Power requirements

4 x Alkaline battery (not included) or AC adapter (included)

Calibration

Digital with external weight

Typical Battery Life

750 hours

Construction

ABS plastic housing, stainless steel pan, in-use cover

Safe Overload

150% of capacity

Communication

Optional RS232

Specified Temperature

Range

32 to 104°F / 0 to 40 °C

Display Type

LCD (front and back of scale) with white backlight

Display Size

1.0 in / 25.4mm

Pan Size

9.65 x 7.48 in / 245 x 190 mm

Scale Dimensions (W x

D x H)

10.2 x 10.6 x 4.8 in / 260 x 270 x 122 mm

Shipping Dimensions

(W x D x H)

12.6 x 12.6 x 6.9 in / 319 x319 x175 mm

Net Weight

5.5 lb / 2.5 kg

Shipping Weight

6.8 lb / 3.1kg

CHAPTER 1 - GETTING STARTED

Valor 1000 Series Service Manual 4Ohaus Corporation www.ohaus.com

TABLE 1-3. SPECIFICATIONS –APPROVED MODELS

Model

V12P3T

V12P6T

V12P15T

V12P30T

Capacity ×Readability

(Max x d non-approved)

3 kg x 0.0002 kg

3000 g x 0.2 g

6 kg x 0.0005 kg

6000 g x 0.5 g

15 kg x 0.001 kg

15000 g x 1 g

30 kg x 0.002 kg

30000 g x 2 g

Maximum Displayed

Resolution (d)

1:15,000

1:12,000

1:15,000

Model

V12P3T-M

V12P6T-M

V12P15T-M

V12P30T-M

Capacity ×Readability

(Max x e approved)

3 kg x 0.001kg

3000 g x 1 g

6 kg x 0.002 kg

6000 g x 2 g

15 kg x 0.005 kg

15000 g x 5 g

30 kg x 0.01 kg

30000 g x 10 g

Approved Resolution

1:3,000

Repeatability

0.001 kg

0.002 kg

0.005 kg

0.01 kg

Linearity

±0.001 kg

±0.002 kg

±0.005 kg

±0.01 kg

Weighing Units

g, kg

Application Mode

Weighing

Tare Range

To capacity by subtraction

Stabilization Time

≤2 seconds

Power requirements

4 x Alkaline battery (included), AC adapter (optional) or rechargeable battery

(optional)

Calibration

Digital with external weight

Typical Battery Life

750 hours

Construction

ABS plastic housing, stainless steel pan

Safe Overload

150% of capacity

Communication

Optional RS232

Specified Temperature

Range

0 to 40 °C

Display Type

LCD (front and back of scale) with white backlight

Display Size

25.4mm

Pan Size

245 x 190 mm

Scale Dimensions (W x

D x H)

260 x 270 x 122 mm

Shipping Dimensions

(W x D x H)

319 x319 x175 mm

Net Weight

2.5 kg

Shipping Weight

3.1 kg

Special Note regarding Approved models:

The specifications for the approved scales below are only for initial testing. These scales must be

tested according to the requirements of the local Weights and Measures authority. Before returning

the scale to service an approved representative of the local Weights and Measures authority must

certify the scale.

CHAPTER 1 - GETTING STARTED

Valor 1000 Series Service Manual 5Ohaus Corporation www.ohaus.com

1.6 Controls

1.6.1 Overview of the Controls

TABLE 1-4 CONTROL FUNCTIONS

Button

Functions

Press (when off): Turns the scale on

Short Press (when on): Sets display to zero

Long Press (when on): Turns the scale off

Press (in Menu): Confirm（Enter）

Short Press: Enters / clears a Tare value

Long Press: Enters User Menu

Press (in Menu): Changes menu selections (Forward)

1.6.2 Main Application Screen

Item

Description

Battery charge symbol

Center of Zero symbol

Negative symbol

Stable weight symbol

NET symbol

CHAPTER 1 - GETTING STARTED

Valor 1000 Series Service Manual 6Ohaus Corporation www.ohaus.com

1.6.3 Turning Scale On/Off

Press On/Off to turn the scale on. The scale will find and set the zero weight point

automatically after it displays the software version.

In weighing mode, short press On/Off for more than 3 seconds to turn the scale off.

1.6.4 Weighing

Once the scale has a stable zero weight and the tare weight of any packaging or

container has been captured, place the product being weighed on the platform -- the

display will show the weight of the product in the selected unit of measure.

1.7 Legal for Trade (LFT)

When the scale is used in trade or a legally controlled application, it must be set up, verified

and sealed in accordance with local weights and measures regulations. It is the responsibility

of the purchaser to ensure that all pertinent legal requirements are met. As the requirements

vary by jurisdiction, the purchaser is advised to contact their local weights and measures office

for instructions about putting the scale into service.

1.7.1 Settings Before verification and sealing, perform the following steps:

1. Confirm that the selected unit of measure is permitted by the local weights and

measures regulations.

2. Perform a calibration refer to user manual in Section 4.1.

3. Set the position of the security switch as shown in Section 1.7.3.

1.7.2 Verification

A weights and measures official must perform the verification procedure. Contact the

local weights and measures office for more information.

1.7.3 Sealing A LFT switch under the sealing cover is used to secure the menu settings. When the

switch is pressed, the menu settings may be viewed but not changed. This sealing

cover is located at the bottom of the scale. Remove the sealing cover with a

screwdriver and then press the switch when the scale is powered on. After that you

will see "LFt .ON" is displayed on the screen.

LFT switch cover

LFT switch

CHAPTER 1 - GETTING STARTED

Valor 1000 Series Service Manual 7Ohaus Corporation www.ohaus.com

After the scale has been verified, it must be sealed by the weights and measures

official to prevent undetected access to the legally controlled settings. Refer to the

illustrations below for the sealing.

Wire Sealing

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