Thermo Fisher Circulating Water Bath 2868

Remove nuts and disconnect wires from heater leads

Remove two hex nuts from heater ends using a 13/16" socket

Reconnect wires and secure nuts

Is the heater securely installed?

Clean the bath with mild soapy water.

Rinse the bath with distilled water.

Add formaldehyde or quaternary ammonium germicide if algae or microorganisms are present.

Ensure the following chemicals are never used

Limit the use of necessary chemicals to a maximum of four hours and clean surfaces immediately after use.

Wear heavy gloves and goggles for protection.

Connect the temperature probe connector to J302 on CPU board

Turn Power switch to the OFF position

Press and hold the SETPOINT key while turning Power ON

Press SETPOINT to end LED display test

Enter 0012 on the display and press SETPOINT

Ensure the unit is in Calibration mode and press SETPOINT

Remove connector J302 from CPU board

Remove temperature sensor fitting from inside bath pan

Hold small nut on fitting firmly with a wrench and remove large fitting piece with another wrench

Remove rubber grommet from temperature sensor

Carefully slide sensor through the control housing and remove

Disconnect electrical connections

Loosen the two visible hose clamps with a screwdriver

Disconnect pump from pump bracket by removing two screws