4
light is off
Poor power connection
Check the circuit for short
circuit
The power switch is damaged
Replace the power switch
Turn on the
water bath
stirring switch,
the motor does
not rotate
There is a problem with the
stirring switch
Replace the stirring switch
There is a problem with the
stirring motor
Replace the mixing motor
Open circuit
Check and exclude
The bath
temperature is
not constant
Solid state relay is broken
Replace solid state relay
Damaged heating tube
Replace heating tube
Sensor damaged
Replace the sensor
Temperature control table is
damaged
Replace the temperature
control table
The timer does
not show
Timer open
Check the line
The timer does
not count or
clear
Bad timer contact
Check the connection
Timer malfunction or button
switch is broken
Replace timer or button
switch
VI. Precautions
1. Keep the instrument clean, do not get water or damp into the electronic control part,
and prevent dirt such as oil samples from being spilled on the instrument.
2. The instrument should be well grounded before use to ensure the safety of operators.
3. When the instrument fails, please professional and technical personnel to deal with it,
and do not disassemble it at will.
4. This instrument is guaranteed for one year.
