Eppendorf 3100 Digital Water Bath Shake - Manual (Page 27)

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Innova 3100  M1231-0050 Operating manual
The SET and MAINT indicators will flash and the accumulated running time will be
displayed in hundreds of hours (i.e., “02” equals 200 hours; “102” equals 10,200
hours). This display will continue for 10 seconds and then default to the previous
mode readout.
4.9 MAINT Indicator Light
After 10,000 hours of operation, the MAINT indicator will light. Preventive
maintenance is recommended at this point. The light can be deactivated by NBS
service personnel. Alteration of the internal clock by unauthorized personnel will void
the warranty.
4.10 Water Level Control
The unit is equipped with an automatic water level control that is infinitely variable
from approximately ½ inch to 2½ inches above the platform level. For proper
operation of the water level control system, the drain valve on the rear panel (see
Figure 2 or 6) must be closed and the external water supply must be on. Naturally, the
power must also be on.
Figure 8: Water Level Control
The level control maintains a water level slightly above the platform. To adjust the
water level:
1. Make sure the power is ON.
2. Remove the rear baffle (see Figure 8 above) by lifting it straight up and away.
The level control is exposed.