Low-Level Protection And Testing; Pump Motor Monitoring - Lauda RE 104 Operating Instructions Manual

Starting up
6.5.2

Low-level protection and testing

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6.5.3

Pump motor monitoring

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13.04.99
YACE0059
− 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!
− In case of pump motor overload or a blockage the heating and the pump are
switched off.
− 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.
− 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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