012-15856A
PS-3401
Instruction Manual
7
1-916-462-8384
800-772-8700
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.
