E r 1, E r 3, E r 2 – LABEC J-NBT User Manual
Page 13: E r 4

Operation Manual
J-NBT-M-E-09-001(REV.01)
P a g e 1 2
5.5 The error message of controller and cause Parameter Configuration Mode
6. Maintenance and service.
6.1 In case of cleaning inside of the bath
!
Ensure that the apparatus has cooled down to a safe temperature to touch.
- Disconnect the power plug from power outlet.
- Clean the inside part of the bath with sponge or soft clothes getting wet by neutral cleaner.
- Clean the inside part of the bath again with sponge or soft clothes getting wet by water.
- Clean with dry clothes.
- Do not use organic solvent.
- Do not use flammable or volatile chemicals such as benzene. alcohol to clean.
6.2 In case of cleaning exterior of the equipment
- Disconnect the power plug from power outlet.
- Ensure that the apparatus has cooled down to a safe temperature to touch.
- Clean the exterior of the equipment with sponge or soft clothes getting wet by neutral cleaner.
- Clean with dry clothes.
- Do not use organic solvent.
- Do not use flammable or volatile chemicals such as benzene. alcohol to clean.
!
Do not use flammable or volatile chemicals such as benzene. alcohol to clean the
equipment.
!
This equipment is not designed nor manufactured Explosion-proof, so never place
Display
Cause
Display
Cause
E r 1
Temperature sensor
short circuit
E r 3
The error for
low temperature
E r 2
Breaking of temperature
sensor wire
E r 4
The error for
high temperature