Agilent Technologies DS40M, User Manual

Page: 78 / 112

5 Technical Information
Thermal protector
78/112 DS40M Pump User Manual / 87-900-147-01(B)
Thermal protector
An overload protector (Auto reset thermal protector) is incorporated.
Thermal protector activates when the pump motor is overloaded (e.g.
locked rotor, out range of voltage, close ventilation).
Tab. 3 Characteristics of the thermal protector
Operation temperature Reset temperature
120° C
±
5° C 76° C
± 1
5° C
When the thermal protector has been actuated, turn off the power
and contact your local AGILENT Service.
WARNING! The motor is very hot when the thermal protector has actuated. Never touch it
with your hand.
When the cause of the malfunction has been eliminated, check that
the motor has cooled down, and restart the pump.
The use of another protective device (such as an earth leakage
breaker) in addition to the overload protector is recommended.