Hach SIGMA 900, User Manual, Page: 31 / 94

Section 4
Page 31
8837mnt.fm
Resetting the Circuit Breaker
4.7 Resetting the Circuit Breaker
DANGER
Disconnect ac power from
sample before attempting to reset
the internal circuit breaker.
1. Disconnect ac power from the unit.
2. Remove the six screws holding the louverd panel to the upper rear
surface of the unit.
3. Loosen the four screws holding the cover Power Junction Assembly
Thermal Switch Control box which is located un the upper left corner of
the unit (
Figure 10 ).
4. The circuit breaker is located on the inside left wall of the Power Junction
Assembly Thermal Control box. Reset the circuit breaker by placing the
handle in the up (ON, 1) position.
5. Reinstall the Power Junction Assembly Thermal Control box cover.
6. Install the louvered rear panel.
7. Connect ac power to the unit.
Figure 10 Power Junction Assembly Thermal Control Box
1. Power Junction Assembly Thermal Control Box
1