OHAUS Guardian 2000 Hotplates And Stirrers User Guide

: June 13, 2024
: Ohaus

Table of Contents

OHAUS Guardian 2000 Hotplates And Stirrers
SAFETY INFORMATION
- Safety Precautions
BASIC FUNCTIONS
CONTROL PANEL
MAINTENANCE
- Cleaning
- Troubleshooting
TECHNICAL DATA
- Specification
COMPLIANCE
FCC Supplier Declaration of Conformity
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

OHAUS Guardian 2000 Hotplates And Stirrers

OHAUS-Guardian-2000-Hotplates-And-Stirrers-product

GuardianTM Hotplate-Stirrers

Safety Information:
Definition of Signal Warnings and Symbols: Safety notes are marked with signal words and warning symbols. These show safety issues and warnings. Ignoring the safety notes may lead to personal injury, damage to the instrument, malfunctions, and false results.

WARNING: For a hazardous situation with medium risk, possibly resulting in severe injuries or death if not avoided.
CAUTION: For a hazardous situation with low risk, resulting in damage to the device or the property in loss of data, or minor or medium injuries if not avoided.
ATTENTION: For important information about the product. This may lead to equipment damage if not avoided.
NOTE: For useful information about the product.

Warning Symbols:

General hazard
Explosion hazard
Caution, hot surface
Protective conductor terminal
Alternating current
Electrical shock hazard

Safety Precautions:

WARNING: The unit is not explosion-proof. Use caution when the unit is on or when heating volatile materials.

GuardianTM Hotplate-Stirrers:

WARNING! DO NOT use the unit in explosive atmospheres or with materials that could cause a hazardous environment from processing. Keep in mind the material flash point relative to the target temperature that has been set.
CAUTION! Beware of the following risks when heating:
- Flammable materials
- Low boiling point combustible substances
- Glass breakage as a result of mechanical shaking power
- Incorrect container size
- Too much medium
- Unsafe condition of the container

Earth Ground – Protective Conductor Terminal

Alternating Current

BASIC FUNCTIONS:

Rotate/Turn the unit on Press the switch

Temp Knob Functions:

Change temp settings: Rotate the temp knob
Turn the heater on: Rotate the temp knob until the unit’s green light appears
Change temperature settings, while heating: Rotate the temp knob
Turn heater off: Rotate the temp knob until the unit’s green light fades

Speed Knob Functions:

Change speed settings: Rotate speed knob
Turn the stirrer on Rotate the speed knob until the unit green light appears
Change speed settings, while stirring: Rotate the speed knob
Turn stirrer off: Rotate the speed knob until the unit’s green light fades

CONTROL PANEL:

Left Knob: Controls temperature.
Standby Switch
Heater Indicator: Illuminates when the heater is running.
Hot Top Caution Indicator: Illuminates when the top plate surface is hot. Do not touch.
Speed Indicator: Illuminates when the stirrer is running.
Right Knob: Controls speed.

MAINTENANCE:

Cleaning:

WARNING:
Electric Shock Hazard. Disconnect the equipment from the power supply before cleaning. Make sure that no liquid enters the interior of the instrument. Attention: Do not use solvents, harsh chemicals, ammonia, or abrasive cleaning agents. The housing may be cleaned with a cloth dampened with a mild detergent if necessary.

Replacing Power Fuse:
The fuse is located at the back of the instrument. Choose the correct fuse to replace according to the fuse specification listed in the specification table.

SAFETY INFORMATION

Definition of Signal Warnings and Symbols
Safety notes are marked with signal words and warning symbols. These show safety issues and warnings. Ignoring the safety notes may lead to personal injury, damage to the instrument, malfunctions and false results.

WARNING For a hazardous situation with medium risk, possibly resulting in severe injuries or death if not avoided.
CAUTION For a hazardous situation with low risk, resulting in damage to the device or the property or in loss of data, or minor or medium injuries if not avoided.
ATTENTION For important information about the product. May lead to equipment damage if not avoided.
NOTE For useful information about the product.

Warning Symbols

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Safety Precautions

WARNING! The protection provided by the unit may be impaired if used with accessories not provided or recommended by the manufacturer, or used in a manner not specified by the manufacturer.
Always operate the unit on a level surface for best performance and maximum safety.
DO NOT lift the unit by the top plate.
To avoid electrical shock, completely cut off power to the unit by disconnecting the power cord from the unit or unplugging it from the wall outlet.
Disconnect the unit from the power supply prior to maintenance and servicing.
Spills should be removed promptly after the unit has cooled down.
Alkalis spills, hydrofluoric acid, or phosphoric acid spills may damage the unit and lead to thermal failure.
DO NOT immerse the unit for cleaning.
DO NOT operate the unit at high temperatures without a vessel/sample on the top plate.
DO NOT operate the unit if it shows signs of electrical or mechanical damage.
Protective earthing of the equipment is achieved via the connection of the provided power cord to a compatible grounded power outlet.
WARNING: The unit is not explosion-proof. Use caution when the unit is on or when heating volatile materials.
WARNING! DO NOT use the unit in explosive atmospheres or with materials that could cause a hazardous environment from processing. Keep in mind the material flash point relative to the target temperature that has been set.
CAUTION! The top plate can reach 500°C, DO NOT touch the heated surface. Use caution at all times. Keep the unit away from explosive vapors and clear of papers, drapery and other flammable materials. Keep the power cord away from the heater plate.
CAUTION! Beware of the following risks when heating.
- Flammable materials
- Low boiling point combustible substances
- Glass breakage as a result of mechanical shaking power
- Incorrect container size
- Too much medium
- Unsafe condition of container
Earth Ground – Protective Conductor Terminal
Alternating Current

Intended Use
This instrument is intended for use in laboratories, pharmacies, schools, businesses, and light industry. It must only be used for processing materials as described in these operating instructions. Any other type of use and operation beyond the limits of technical specifications, without written consent from OHAUS, is considered as not intended. This instrument complies with current industry standards and recognized safety regulations; however, it can constitute a hazard in use. If the instrument is not used according to these operating instructions, the intended protection provided by the instrument may be impaired.

BASIC FUNCTIONS

Rotate

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CONTROL PANEL

Left Knob: Controls temperature.
Standby Switch
Heater Indicator: Illuminates when heater is running.
Hot Top Caution Indicator: Illuminates when the top plate surface is hot. Do not touch.
Speed Indicator: Illuminates when the stirrer is running.
Right Knob: Controls speed.

Note: The top plates are of different dimensions and materials. Please refer to the actual product for details.

MAINTENANCE

Cleaning

WARNING: Electric Shock Hazard. Disconnect the equipment from the power supply before cleaning. Make sure that no liquid enters the interior of the instrument.
Attention: Do not use solvents, harsh chemicals, ammonia or abrasive cleaning agents.

The housing may be cleaned with a cloth dampened with a mild detergent if necessary.

Replacing Power Fuse
The fuse is located at the back of the instrument. Choose the correct fuse to replace according to the fuse specification listed in the specification table.

WARNING: Electric Shock Hazard. Disconnect the equipment from the power supply before replacing the fuse.
The use of a fuse of a different type or with a different value, or bridging or shunting the fuse is not allowed and can possibly cause a hazard to your safety and lead to instrument damage!

Troubleshooting

The following table lists common problems and possible causes and remedies. If the problem persists, contact OHAUS or your authorized dealer.

Error	Cause of Error	How to Fix
The unit fails to power on	Missing or blown fuse	Add or replace the fuse as

necessary.
Unit fails to heat| Heater over temperature or Heater damage| Unplug and replug the power cord for reset, if the failure is consistent, please contact OHAUS.
Unit fails to stir| Motor overload or Motor damage| Smaller vessel or reduce the volume in the vessel and wait for auto reset, if the failure is consistent, please contact OHAUS.

Service Information
If the troubleshooting section does not resolve your problem, contact an authorized OHAUS Service Agent. For Service assistance in the United States, call toll-free 1-800-526-0659 between 8:00 AM and 5:00 PM Eastern Standard Time. An OHAUS Product Service Specialist will be available to assist you. Outside the USA, please visit our website www.ohaus.com to locate the OHAUS office nearest you.

TECHNICAL DATA

Equipment Ratings: Indoor use only
Altitude: 0 to 2000m
Operating temperature: 5°C to 40°C
Storage temperature: -20°C to 65°C
Operating humidity: 20 to 80% relative humidity, non-condensing
Storage humidity: 20 to 80% relative humidity, non-condensing
Voltage fluctuations: Mains supply voltage fluctuations up to ±10% of the nominal voltage.
Overvoltage category (Installation category): II
Pollution degree: 2

Specification

Model

– Hotplate Stirrer

– Hotplate

– Stirrer

|

e-G21HSRDS e-G21HPRDS e-G21STRDS

|

e-G21HS04C e-G21HP04C e-G21ST04C

|

e-G21HS07C e-G21HP07C e-G21ST07C

---|---|---|---
Overall Dimensions (L x W x H)| 264 x 163 x 101 mm

(10.4 x 6.4 x 4.0”)

| 264 x 163 x 110 mm

(10.4 x 6.4 x 4.3”)

| 318 x 223 x 112 mm

(12.5 x 8.8 x 4.4”)

– Hotplate Stirrer

– Hotplate

|

100-120V~ 5A / 220-240V~ 4A

| 100-120V~ 10A /

220-240V~ 7A

Electrical (50 / 60 Hz)

– Stirrer

| 100-120V~ 2A / 220-240V~ 1A
Fuses

– Hotplate Stirrer

– Hotplate

| 10 A, 5×20 mm, 250 VAC /

6.3 A, 5×20 mm, 250 VAC

| 15 A, 5×20 mm, 250 VAC /

10 A, 5×20 mm, 250 VAC

Fuses

– Stirrer

(15.4 x 11.4 x 6.3”)

Shipping Weight

– Hotplate Stirrer

– Hotplate

– Stirrer

|

3.1 kg

2.4 kg

2.9 kg

|

3.1 kg

2.4 kg

3.0 kg

|

4.6 kg

3.9 kg

4.5 kg

Note:

The parameters in the specification table are applicable to the 2” (5cm) diameter center of the top plate.
Minimal speed varies depending on the stir bar, vessel, and fluid conditions.

COMPLIANCE

Compliance to the following standards is indicated by the corresponding mark on the product.

Mark

|

Standard

---|---
| This product complies with the applicable harmonized standards of EU Directives 2011/65/EU (RoHS), 2014/30/EU (EMC) and 2014/35/EU (LVD). The EU Declaration of Conformity is available online at www.ohaus.com/ce.
| This product complies with the applicable statutory standards of the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012, UK Electromagnetic Compatibility Regulations 2016 and Electrical
Equipment (Safety) Regulations 2016. The UK Declaration of Conformity is available online at www.ohaus.com/uk-declarations.
| This product complies with the EU Directive 2012/19/EU (WEEE). Please dispose of this product in accordance with local regulations at the collecting point specified for electrical and electronic equipment. For disposal instructions in Europe, refer to www.ohaus.com/weee.
| EN 61326-1
| CAN/CSA-C22.2 No. 61010-1, CAN/CSA-C22.2 No. 61010-2-010,
CAN/CSA-C22.2 No. 61010-2-051
UL 61010-1, UL 61010-2-010, UL 61010-2-051

ISED Canada Compliance Statement:
CAN ICES-003(A) / NMB-003(A)

ISO 9001 Registration
The management system governing the production of this product is ISO 9001 certified.

Scan the QR code to download the full instruction manual or visit http://www.ohaus.com/support to view the full user manual.

GuardianTM 2000 Instruction Manual

FCC Supplier Declaration of Conformity

Unintentional Radiator per 47CFR Part B
Trade Name: OHAUS CORPORATION
Model or Family identification: e-G21

Party issuing Supplier’s Declaration of Conformity:

Ohaus Instruments (Changzhou) Co., Ltd.
2F, 22 Block, 538 West Hehai Road, Xinbei District, Changzhou Jiangsu 213022 China
Phone: +86 519 85287270

Responsible Party – U.S. Contact Information:

Ohaus Corporation 7 Campus Drive, Suite 310 Parsippany, NJ 07054 United States.
Phone: +1 973 377 9000
Web: www.ohaus.com.

FCC Compliance Statement:

Note:
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Ohaus Corporation