Bosch GRL 250 HV - User Manual

GRL 240 HV
GRL 245 HV
GRL 250 HV
GRL 300 HV
GRL 300 HVG
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Operating/Safety Instructions
Consignes de fonctionnement/sécurité
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Summary

General Safety and Laser Warnings

Laser Safety and Warning Labels

Details laser safety, warning labels, and precautions against eye exposure.

FCC Compliance Statement

EU Declaration of Conformity

Work Area Safety Guidelines

Electrical Safety Precautions

Personal Safety and Alertness

Tool Use and Care Instructions

Tool Service and Repair

Intended Use of the Laser Level

Preparation and Battery Handling

Inserting;Replacing the Battery

Instructions for safely inserting and replacing batteries in the tool.

Low Battery Indicator

Explanation of the low battery indicator and its function.

Technical Data: GRL 240-250 HV

Technical Data: GRL 300 HV;HVG

Product Features Overview

Rotational Laser Level Components

Lists and describes the numbered components and functions of the rotational laser.

Laser Level Operation

Initial Operation and Setup

Instructions for initial setup, protecting the tool, and setting it up for use.

Turning the Tool On and Off

Procedure for switching the laser tool on, off, and its auto-off function.

Laser Level Operating Modes

Rotational Operation

Details on rotational speed selection and its use with/without a receiver.

Line and Point Operation

Explanation of line and point operation modes, aperture angles, and adjustments.

Vertical Plane Rotation

How to rotate the laser line or plane in vertical position using remote control.

Leveling and Accuracy

Automatic Leveling and Shock-Warning

Covers automatic leveling process, shock-warning function, and indicators.

Influences on Accuracy

Factors affecting accuracy, especially ambient temperature and distance.

Accuracy Check Procedure

Laser Level Applications

Indicating Plumb Line;Vertical Plane

Using the tool to create plumb lines and vertical planes.

Working with Laser Receiver

Guidance on using the laser receiver for better visibility and longer distances.

Working Outdoors

Tips for using the tool outdoors, including tripod use and shock-warning.

Using Laser Level Accessories

Laser Viewing Glasses

Proper use and limitations of laser viewing glasses.

Working with Laser Receiver

Instructions for connecting and using the laser receiver with the tool.

Working with Tripod

How to mount the laser tool securely on a tripod.

Wall Mount;Alignment Unit

Guidance on using wall mounts for versatile tool positioning.

Tool Maintenance and Service

Tool Cleaning and Storage

Procedures for cleaning, storing, and maintaining the tool's condition.

Environment Protection

Guidelines for recycling materials and batteries.

RC1 Remote Control Safety and Use

RC1 General Safety Rules

Safety precautions for operating and handling the remote control.

RC1 Intended Use

Defines the purpose of the RC1 remote control for laser levels.

RC1 Preparation and Technical Data

Instructions for battery replacement and technical specifications of the remote control.

RC1 Operation and Modes

RC1 Features Overview

Description of the buttons and indicators on the RC1 remote control.

RC1 Operation and Signal Transmission

How to operate the remote control and factors affecting signal transmission.

RC1 Operating Modes

Details on using the remote to control rotational, line, and point operations.

RC1 Advanced Functions and Maintenance

Rotating Laser Line;Dot with RC1

Using the remote control to rotate the laser line or dot.

Resetting Shock-Warning Function

Procedure to reset the shock-warning function using the remote control.

RC1 Maintenance and Cleaning

Guidelines for cleaning and maintaining the RC1 remote control.

Limited Warranty Information

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

This document describes the Bosch GRL 240 HV, GRL 245 HV, GRL 250 HV, GRL 300 HV, and GRL 300 HVG rotational laser levels, along with their accessories and the RC1 remote control.

Function Description

The Bosch GRL series rotational laser levels are designed for determining and checking precise horizontal partitions, vertical lines, building lines, and plumb points. They are suitable for both indoor and outdoor use. The tools project a variable laser beam and a vertical plumb beam, which can be used in various operating modes: rotational operation, line operation, and point operation. These modes allow for flexibility in different measurement tasks, from general leveling to precise alignment. The rotational laser automatically levels itself and features a shock-warning function to prevent errors caused by movement or vibrations.

The RC1 remote control (an optional accessory for the GRL 240 HV) allows for remote adjustment of the laser's operating modes and rotational plane, enhancing user convenience and precision, especially when the laser tool is positioned at a distance or in hard-to-reach areas.

Important Technical Specifications

The technical specifications vary slightly across the different models:

GRL 240 HV / GRL 245 HV / GRL 250 HV:

• Working Range (Diameter):
  • Without laser receiver: approx. 200 ft (60 m)
  • With laser receiver: approx. 800 ft (240 m) for GRL 240 HV/245 HV, approx. 1000 ft (300 m) for GRL 250 HV
• Leveling Accuracy (at 68° F (20 °C), alongside the axes):
  • GRL 240 HV: ± 1/4" @ 100 ft (± 2.0 mm @ 10 m)
  • GRL 245 HV / GRL 250 HV: ± 1/8" @ 100 ft (± 1.0 mm @ 10 m)
• Self-leveling Range (typ.): ± 8% (±5°)
• Leveling Duration (typically): 15 s
• Rotational Speed: 150/300/600 min⁻¹
• Scan Angle for Line Operation: 10°/25°/50°
• Operating Temperature: 0...+50°C
• Storage Temperature: -20...+70°C
• Relative Air Humidity (max.): 90%
• Laser Class:
  • GRL 240 HV / GRL 245 HV: 2 (<1 mW @ 635 nm)
  • GRL 250 HV: 3R (<5 mW @ 635 nm)
• Laser Beam Ø at Exit Opening (approx.): 5mm
• Tripod Mount (horizontal): 5/8"-11
• Batteries: 2 x 1.5 VD (LR20) alkali-manganese
• Operating Life Time (approx. with alkali-manganese batteries): 50 h
• Weight (according to EPTA-Procedure 01/2003): 3.9 lbs
• Dimensions: 190 x 180 x 170 mm
• Degree of Protection: IP54 (dust and splash water protected)

GRL 300 HV / GRL 300 HVG:

• Working Range (Diameter):
  • Without laser receiver: approx. 200 ft (60 m) for GRL 300 HV, approx. 330 ft (100 m) for GRL 300 HVG
  • With laser receiver: approx. 1000 ft (300 m)
• Leveling Accuracy (at 68° F (20 °C), alongside the axes): ± 1/8" @ 100 ft (± 1.0 mm @ 10 m)
• Self-leveling Range (typ.): ± 8% (±5°)
• Leveling Duration (typically): 15 s
• Rotational Speed: 150/300/600 min⁻¹
• Scan Angle for Line Operation: 10°/25°/50°
• Operating Temperature: 0...+50°C for GRL 300 HV, 0...+40°C for GRL 300 HVG
• Storage Temperature: -20...+70°C
• Relative Air Humidity (max.): 90%
• Laser Class: 3R
• Laser Type: 635nm, <5mW for GRL 300 HV; 532nm, <5mW for GRL 300 HVG (green laser)
• Laser Beam Ø at Exit Opening (approx.): 5mm
• Tripod Mount (horizontal): 5/8"-11
• Batteries: 2 x 1.5 VD (LR20) alkali-manganese
• Operating Life Time (approx. with alkali-manganese batteries): 50 h for GRL 300 HV, 30 h for GRL 300 HVG
• Weight (according to EPTA-Procedure 01/2003): 3.9 lbs
• Dimensions: 190 x 180 x 170 mm
• Degree of Protection: IP54 (dust and splash water protected)

RC1 Remote Control:

• Working Range: 100 ft (30 m)
• Operating Temperature: -10 °C ~ +50 °C
• Storage Temperature: -20 °C ~ +70 °C
• Battery: 1 x 1.5 V LR06 (AA)
• Weight (according to EPTA-Procedure 01/2003): 2.4 oz. (69 g)

Usage Features

• Automatic Leveling: The laser tool automatically detects horizontal or vertical position and levels out unevenness within its self-leveling range. It continuously checks its position and re-levels if necessary.
• Shock-Warning Function: This feature prevents vertical errors by stopping rotation and flashing the laser if the tool is moved, impacted, or subjected to heavy ground vibrations. It can be activated and reset via a dedicated button.
• Operating Modes:
  • Rotational Operation: Ideal for use with a laser receiver, offering selectable speeds (150/300/600 min⁻¹).
  • Line Operation: The laser beam moves within a limited aperture angle (10°/25°/50°), increasing visibility without a receiver.
  • Point Operation: Provides the best visibility of the variable laser beam, useful for projecting heights or checking building lines.
• Vertical Position Functionality: When placed vertically, the tool can project a plumb line or vertical plane. The laser point, line, or rotational plane can be rotated around the vertical axis using the remote control.
• Accessories: The tool is compatible with various accessories, including tripods (21), laser receivers (LR 24, LR 30, LR 1/LR 1G), laser viewing glasses (24), wall mounts/alignment units (25), measuring rods (22), and ceiling measurement plates (29).
• Remote Control (RC1): Enables remote selection of rotational speed, line operation aperture angle, and rotation of the laser line/dot or rotational plane in both horizontal and vertical positions. This prevents accidental misalignment of the main unit during adjustments.
• Low Battery Indicator: A flashing red indicator (12) signals approximately 2 hours of remaining operation, after which continuous red light indicates that measurements are no longer possible, and the tool automatically switches off.

Maintenance Features

• Cleaning: Keep the tool and remote control clean and dry. Wipe off debris with a moist, soft cloth. Do not immerse in water or other fluids, and avoid cleaning agents or solvents. Regularly clean the surfaces at the laser exit opening.
• Battery Care: Remove batteries when not using the tool for extended periods to prevent corrosion and discharge. Always replace all batteries at the same time with new ones of the same brand and type. Do not mix battery chemistries or charge alkaline batteries.
• Storage: Store and transport the tool in its supplied protective case (30).
• Accuracy Check: Periodically check the accuracy of the measuring tool, especially after drops, impacts, or exposure to extreme temperatures. A detailed procedure for checking accuracy across X and Y axes is provided.
• Service: In case of visible damage or malfunction, repairs should be carried out by an authorized Bosch after-sales service center using identical replacement parts. Do not disassemble or modify the tool yourself.
• Environmental Protection: Recycle raw materials and batteries according to local regulations. Do not dispose of batteries in fire.

Bosch GRL 250 HV Specifications

General

Brand	Bosch
Model	GRL 250 HV
Category	Measuring Instruments
Language	English