7-2
MaxQ 5000 Shaker
Thermo Scientific
Section 7
Troubleshooting
Hi-Limit Thermostat
Failure
In the unlikely event that the programmed hi-limit and the user adjustable
hi-limit thermostats fail, there is a third overtemperature thermostat. The
thermostat is located underneath the shaker’s back panel. If the shaker fails
to heat with the “HEAT ON” lamp lit and the user-set table hi-limit
thermostat set to the fully clockwise position, it will be necessary to reset
the secondary over temperature thermostat. To do so, proceed as follows:
1. Disconnect power cord from outlet.
2. Remove rear panel.
3. Locate the thermostat (see Figure 7-1). The thermostat has a small
button that needs to be pressed in to reset the thermostat.
4. Once the thermostat is reset, reinstall the rear panel, plug the power
cord back into the outlet and verify the unit is heating again.
5. If the shaker still fails to heat, contact Technical Services for further
assistance.
Figure 7-1.
Overtemperature Thermostat