PASCO PS-3401 User manual

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1-916-462-8384 800-772-8700
Model PS-3401
Operating Instructions
Safety instructions ....................................................................... 2
Inspection....................................................................................3
Control.........................................................................................4
Trial run.......................................................................................6
Heating........................................................................................6
Residual heat warning (Hot).........................................................7
Stirring.........................................................................................7
Faults...........................................................................................7
Maintenance................................................................................8
Standards and regulations........................................................... 8
Specifications ..............................................................................8
Warranty......................................................................................9
PS-3401 Heater / Stirrer

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Safety instructions
For your protection
•Read the operating instructions in full before starting up
and follow the safety instructions when in use.
•Ensure that only trained staff works with the device.
•Socket must be earthed (protective ground contact).
•Caution-Magnetism! Effects of the magnetic field have to be
taken in to account (e.g. data storage media, cardiac
pacemakers…).
•The heating plate can reach temperatures of 310°C and pay
attention to the residual heat after switching off.
•The main power supply cable should not touch the heating
plate.
•Wear your personal protective equipment in accordance with
the hazard category of the media to be processed.
Otherwise there is a risk from:
-Splashing and evaporation of liquids
-Ejection of parts
-Release of toxic or combustible gases
•Set up the device in a spacious area on an even, stable, clean,
nonslip, dry and fireproof surface.
•Don’t use damaged components.
•Gradually increase the speed and reduce the speed if
-the medium splashes out of the container because the
speed is too high
-the machine is not running smoothly
-the container moves on the heating plate
•Caution! Only process and heat up any media that has a flash
point higher than the adjusted safe temperature limit that has
been set.
•The safe temperature limit must always be set to at least 50°C
lower than the fire point of the media used.
•Beware of hazards due to:
-flammable materials
-combustible media with a low boiling temperature
-glass breakage
-incorrect container use
-overfilling of media
-unsafe condition of container
•The machine may heat up when in use. Don’t use the machine
in explosive atmospheres with hazardous substances.
•Process pathogenic materials only in closed containers under
a suitable extractor hood.
•Only process media that will not react dangerously to the extra
energy produced in other ways, e.g. through light irradiation.
•Accessories must be securely attached to the machine and
can’t come off by themselves.
•Always disconnect the plug before fitting accessories.
•The machine can only be disconnected from the mains supply
by pulling out the mains plug or the connector plug.

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•When using PTFE-coated magnetic bars, the following has to
be noted:
Chemical reactions of PTFE occur in contact with molten or
solute alkali metals and alkaline earth metals, as well as with
fine powders of metals in groups 2 and 3 of the periodic system
at temperatures above 300°C-400°C. Only elementary fluorine,
chlorotrifluoride and alkali metals attack it; halogenated
hydrocarbons have a reversible swelling effect.
•The voltage stated on the type plate must correspond to the
mains voltage.
•Don’t cover the machine, even partially e.g. with metallic plates
or film, which will result in overheating.
•Ensure the heating plate is kept clean.
•Protect the machine and accessories from bumps and impacts.
•The minimum distance between the machines: the minimum
distance between the machine and the wall is 100 mm.
Inspection
•Unpack the device carefully and check for any damages that
may have arisen during transit. Please contact the
manufacturer /supplier for technical support.
Note:
If there is any apparent damage to the device,
please do not connect the power line.
•Contents of package
Items
Qty
Main unit
1
Power cable
1
Screwdriver
1
Magnetic stirring bar
1
User Manual
1
Stainless Steel Rod (about 25 cm)
1
Table 1
Control (Next page)

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Item
Description
○
1Knob for temperature setting Set the temperature by rotating the knob
○
2Knob for speed setting Set the speed by rotating the knob
○
3Knob for safety temperature setting
Set the safety temperature by rotating the knob. When the heating
temperature is higher than the safety temperature, the machine stops
heating. It’s the max. temperature of 320°C by rotating the knob to the
limit in the clockwise direction; it'll be the min. temperature of 50°C by
rotating the knob to the limit in the anti-clockwise direction.
○
4Temperature setting scale Reading the temperature setting value.
○
5Speed setting scale Read the speed setting value.
○
6Heating indicator It’s lit when heating.
○
7Not applicable Not applicable
○
8Setting indicator The light will flash when setting the temperature or speed.
○
9Power switch Switch on/off
Table 2

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Trial run
•Make sure the required voltage corresponds to the mains voltage.
•Ensure the socket must be properly grounded.
•Switch on and start initializing.
•Add sample into the container with an appropriate stirring bar.
•Place the container on the heating plate.
•Set the target speed and start stirring.
•Observe the stirring bar operation.
•Set the temperature and start heating.
•Connect the external temperature sensor.
If the above operations are normal, the device is good to run. If these
operations are abnormal, the device may probably be damaged during
transit, please contact manufacturer/supplier for technical support.
Warning!
DO NOT move the container when the device is working.
Heating
With the digital temperature control, the machine has two separate safe
circuits. The hotplate is kept at a constant temperature by adigital control
circuit. The hotplate temperature can also be monitored by another
adjustable safe circuit. The two temperature sensors (PT1000) internal
for temperature control are built into the hotplate.
•Set temperature by the temperature setting knob.
•Heating is switched on/off by pressing the temperature setting.
•The set temperature of last operation will be displayed when the
machine is switched on. Normally, the set temperature and the
actual temperature may probably have some differences:
-Hotplate center and outer edge
-The sample inside the container and the container

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Residual heat warning (HOT)
To prevent the risk of burns from the hotplate, this instrument has
residual heat warning function. When heating is stopped, and the heating
plate temperature is still above 50°C, the setting indicator will light up to
warn that there’s potential risk of burns. When the hotplate temperature
drops to below 50°C, the instrument will be automatically powered off.
To turn off the instrument immediately, pull out the plug. In case of main
power failure or disconnection, the residual heat warning will not work.
Stirring
Stirring is switched on / off by pressing the speed setting knob. The
speed is set by rotating the knob in the range of 50-1500rpm.
Faults
•The device can’t work when powered on
-Check if the power line is connected properly
-Check if the fuse is broken or loose
•Fault in power on self test
-Power off the device and then restart
•Actual speed can’t reach the set value
-Media in high viscosity may probably cause abnormal speed
reduction of the motor
•The device can’t be powered off when switched off
-Check if the residual heat warning function is still on and the
hotplate temperature is above 50°C (the setting indicator is lit)
Fault Fault description Solutions
D2 light,
D3 flash Internal temperature sensor PT1000 failure Re-start the device
D1, D2
light,
D3 flash
Motor failure Reduce the sample
Table 3
D1 for “Heating” indicator light, D2 for “External temperature sensor”
indicator light; D3 for “Power on” indicator light
If the instrument still can’t work properly, please contact manufacturer/
supplier for technical support.
Maintenance
Proper maintenance can make the device work well and extend its life.
•Do not allow moisture to get into the device when cleaning.
•Disconnect the main plug when cleaning.
•Wear protective gloves when cleaning.
•Only use the recommended cleansing agents.

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Dyes
Isopropyl alcohol
Construction
materials
Water containing surfactant /
Isopropyl alcohol
Cosmetics
Water containing surfactant /
Isopropyl alcohol
Foodstuffs
Water containing surfactant
Fuels
Water containing surfactant
Table 4
Standards and Regulations
USA/Canada: cTUVus (NRTL: Nationally Recognized Testing Laboratory)
NRTL Symbol:
International
Product End of Life Disposal Instructions:
This electronic product is subject to disposal and recycling regulations that
vary by country and region. It is your responsibility to recycle your electronic
equipment per your local environmental laws and regulations to ensure that
it will be recycled in a manner that protects human health and the
environment. To find out where you can drop off your waste equipment for
recycling, please contact your local waste recycle/disposal service or the
product representative.
The European Union WEEE (Waste Electrical and Electronic Equipment)
symbol (above) and on the product or on its packaging indicates that this
product must not be disposed of in a standard waste container.

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Specifications
Items
MI0102010
Voltage [VAC]
200-240/100-120
Frequency [Hz]
50/60
Power [W]
650
Stirring point position quantity
1
Max. stirring quantity (H2O) [L]
5
Max. magnetic bar [L x Φ, mm ]
55 x 10
Motor Type
Brushless DC motor
Max. power input of motor [W]
30
Max. power output of motor [W]
20
Speed range [rpm]
50-1500
Speed display
Scale reading
Temperature display
Scale reading
Working plate material Aluminum alloy with
ceramic coated
Dimension of working plate (mm)
Φ135
Heating power [W]
600
Temperature range [°C]
50-310
Safety temperature [°C]
50-320
Residual heat warning
50°C
Dimensions [W x D x H, mm]
250x148x85
Weight [kg]
1.9
Permissible ambient temperature
[°C]
5-40
Permissible relative humidity
80%
Protection class
acc. to DIN EN60529
IP42
Table 5
Warranty
The instrument is warranted to be free from defects in materials and
workmanship under normal use and service for a period of five years
from the date of invoice. The warranty is extended only to the original
purchaser. It doesn’t cover any worn out parts, nor apply to any damage
by improper use, insufficient care or maintenance not carried out in
accordance with the instructions in this operating manual.
For claims under the warranty please contact your local supplier. You
may also send the instrument directly to manufacturer, enclosing the
invoice copy and giving reasons for the claim.

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Technical Support
Address PASCO scientific
10101 Foothills Blvd.
Roseville, CA 95747-7100
Phone
916-462-8384 (worldwide)
800-772-8700 (US)
Email
[email protected]
Web
www.pasco.com/support