Vertiv | Liebert® DM | User Manual 96
System Operation and Maintenance
• The bottom of the humidifier is equipped with a manual reset over-temperature switch. When the
infrared humidifier has a dry burning phenomenon, the over-temperature switch is disconnected, and the
infrared humidification lamp power supply is cut o.
• After the abnormality of the unit is completed, if it requires to be reset, press the reset switch as shown in
Figure 7-6 by the dotted box.
Figure 7-6 Over-temperature Switch
7.2.6. Power SPD (Optional)
Figure 7-7 and Figure 7-8 shows the location of the power SPD.
DM 07 kW/12 kW Upflow Unit DM 17 kW Upflow Unit
No. Description No. Description
1 Power SPD 2 Power SPD
Figure 7-7 Power SPD Location (07 kW, 12 kW, and 17 kW)
1
2