Heidolph Hei-VAP Precision - Manual (Page 45)

Errors and Troubleshooting Errors and Troubleshooting
88 89
Error / message Cause Remedy
Motor lift is not
functioning
Master switch is deactivated Activate main switch
Master switch is defective Contact service
Fuses defective or blown fuse Replace fuses (see
chapter “Maintenance,
cleaning, service” –
“Maintenance”)
Lift is at end stop Activate other arrow key
Mechanical system / motor is
defective
Contact service
Height stop is not set
accurately
Perform height adjust-
ment (see chapter
“Set-up and start-up“ –
“Glassware sets)
No evacuation Power switch Rotavac vario
control or Rotavac vario tec is
not activated.
Vacuum valve is defective.
Activate the power switch
Fuses defective or blown fuse Replace fuses
Insufficient vacuum System leaks Check seals, tubing and
connections
Check stopcock, grease if
necessary
Vacuum pump is defective Observe manufacturer‘s
instructions of the vacu-
um pump
Unit suddenly
switches off (Hei-VAP
Precision and Hei-VAP
Advantage)
Timer is programmed Check and switch off the
timer, if necessary (see
chapter “Operation” –
“Timing functions”)
Fuses defective or blown fuse Replace fuses (see
chapter “Maintenance,
cleaning, service” –
“Maintenance”)
Additional conditions
Tabelle 7-1: Error codes
Additional conditions Reaction
Auto
accurate
sensor is not
connected
‒ Change to the SET
pressure
mode
‒ The current pressure value is accepted as target value,
similar to Hold/Accept in the SET
pressure
mode
‒ Auto
accurate
mode cannot be selected
Vapor sensor is
defective
‒ The actual value curve “- - -“ is displayed instead of the
vapor temperature.
The vapor sensor is not
connected
‒ The vapor temperature is not displayed in the actual
value display
Heater can only be
activated at > 0 °C
Table 7-2: Additional conditions
Error / message Cause Remedy
Unit suddenly switches
off (Hei-VAP Precision)
When pressure is detected,
the Hei-VAP Precision is
emergency stopped.
Check the settings in the
setup menu.
The Hei-VAP Precision is
reset to the starting
condition when pressing
any key.
Calibrate the vacuum
sensor (see chapter
“Operation” – “More
Functions”)