Precisa 320 XR Series Service Manual PDF DOWNLOAD

Description

Precisa 320 XR Series Service Manual PDF DOWNLOAD

Description

This is the complete Precisa Gravimetrics 320 XR Series Service Manual, the official factory-issued guide for professional servicing and calibration of the 320 XR precision balances. It provides exhaustive technical documentation including teardown instructions, electronic diagrams, weighing cell service steps, calibration procedures, schematics, adjustment sequences, and complete spare parts listings.

Designed for laboratory equipment technicians and authorized service engineers, this manual covers every subsystem of the 320 XR balance: mechanics, electronics, weighing cell, display unit, calibration assemblies, power supply, and diagnostic routines.

Table of Contents 

Section A — Accessories

• Accessories list for 320 XR models

Section B — Mechanics

1. Weighing Cell

• Flexure straps and sheets

• Sensor mechanism

• Support pieces

• Magnetic pot and cover

• Balance arm

• Complete parts list

2. Bottom of Balance

• Housing base

• Levelling system

• Main board

• Display board

• Connection board

3. Top of Balance

• Membrane keypad

• Identification label

• Upper housing

• Display glass and gaskets

4. Weighing Pan

• Group SM

• Group A

5. Windshield Assembly (350-8549)

• Slides, panels, guides

• Tension springs

• Lips, panels & screws

6. Calibration Units (320-7140 / 320-8043)

• Servo-motor assemblies

• Levers, holders, spacers

• Calibration weight mechanisms

7. Calibration Weights

• Model-specific weights for each calibration version

8. Power Supply Options

• CH, Schuko, USA, UK, AUS

• Standard and IP65 variants

Section C — Electronics

1. Main Board (320-7227-020)

• Removal & replacement procedures

• Schematics

• Parts list

• Component layouts

2. Weighing Cell Board (320-7219-010)

• Schematics

• Board assembly

• Parts list

3. Connector Board (320-7218-010)

4. LCD Display Board (320-7207-010)

• Full schematics and components

Section D — Service Twin Calibration

• Required tools

• Opening the balance

• Preparing for service

• Dismantling & cleaning the weighing cell

• Installing new flexure systems

• Reassembling the weighing cell

Section E — Service Single Calibration

• Tools and preparation

• Cell removal

• Replacing flexure systems

• Cleaning procedures

• Full reassembly

Section F — Adjustments

• Activating service mode

• Symmetry adjustment

• Corner load adjustment

• Linearization procedure

• Calibration weight checks

• Final verification and S-correction

• Error messages (operating, fatal, hardware)

Section G — Two-Weight Calibration Procedure (German)

• Complete multi-step disassembly and reassembly

• Flexure replacement

• Cleaning and calibration

Section H — One-Weight Calibration Procedure (German)

• Identical detailed layout for single-weight calibration

Section I — Adjustment Instructions (German)

• Internal calibration weight alignment

• Final accuracy checks

• Adjustment correction tables

File Details

Manual Name: Precisa Gravimetrics 320 XR Series Service Manual
Models Covered: 320 XR Series Precision Balances
Edition/Year: 2006
PDF Quality: High-resolution, fully bookmarked, clear schematics, searchable text
Total Pages: 128