Operating Instructions& Frequently Asked Questions: 5 Inch LED Digital Magnetic Hotplate Stirrer
Frequently Asked Questions: 1
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Contents Safety Instructions 2 4 5 7 7 Inspection Control Trial run Heating Working with the external temperature sensor Residual heat warning (Hot) Stirring Faults Error codes Maintenance Standards and regulations Specifications Warranty 1 8 9 9 9 10 11 11 12 13
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 work 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 280°C and pay attention to the residual heat after switching off.
• 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.
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.
• Contents of package Qty 1 1 1 1 1 1 Items Main unit Power cable Screwdriver Magnetic stirring bar External temperature sensor PT1000 User Manual Control MI0102003 0~280°C 5 0~1500rpm
6 1 Knob for temperature setting Set the temperature by rotating the knob Start/stop heating by pressing the knob 2 Knob for speed setting Set the speed by rotating the knob Start/stop stirring by pressing the knob 3 Knob 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.
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 and the LED display. • Set the temperature and start heating. • Observe the actual temperature on the LED display. • Connect the external temperature sensor.
The single external PT1000 can monitor the temperature of sample. • Set temperature by the temperature setting knob. • When heating, the LED will display alternately the target temperature and the real temperature. • 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.
sensor must be inserted in the sample. For any faults, heating will be automatically stopped. In this case, please proceed as follows: - Turn power off - Ensure the external temperature sensor is inserted into the sample - Turn on and set the temperature to start heating - If the instrument still can’t work properly, please contact manufacturer / supplier for technical support. Residual heat warning (HOT) To prevent the risk of burns from the hotplate, this instrument has residual heat warning function.
- 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 (LED still works and “Hot” flashes) Error codes Error code Error description Solutions Solutions Er1 Short circuit in the
Maintenance Proper maintenance can make the device work well and extend its life.
Specifications Items MI0102003-KFJ Voltage [VAC] 100-120 Frequency [Hz] 50/60 Power [W] 630 Stirring point position quantity 1 Max. stirring quantity (H2O) [L] 3 Max. magnetic bar [L x Φ, mm ] 55 x 10 Motor Type DC motor Max. power input of motor [W] 3 Max. power output of motor [W] 2.
Warranty The instrument is warranted to be free from defects in materials and workmanship under normal use and service for a period of 24 months 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.
