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13.04.99
YACE0059
19
6.5.2 Low-level protection and testing
"
""
"
−
Double signal tone sounds, if the bath liquid falls so
much that the heater is no longer covered with liquid
completely
1. The display shows LLL (low-level) and the fault triangle
is flashing
!
heating is switched off on both poles,
!
pump and refrigeration system are switched off by
the electronics.
2. Top up the bath
➾
Section 5.2 and reset with the key.
☞
−
If necessary repeat several times in case that the pump does not purge
immediately.
−
Testing at regular intervals by lowering the bath level. Place a hose on the pump
connector and pump some of the bath liquid into a suitable container.
−
− −
−
Step 1 - 2 must follow.
−
Bath temperature during this test not below 0°C or higher than 50°C, otherwise
danger of burn injuries !
−
If there is any irregularity when testing the safety devices, switch off the unit
immediately and pull out the mains plug !
−
Have the unit checked by the LAUDA service or the local service organisation!
6.5.3 Pump motor monitoring
☞
−
In case of pump motor overload or a blockage the heating and the pump are
switched off.
"
""
"
−
Double signal tone sounds.
−
The display shows PPP for pump and the fault triangle
is flashing
−
Rectify the cause of the fault, e.g. clean the pump or
check the viscosity, then
−
reset with the key.
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