With the enhanced weather protection hood LTEH211, the operation check differs from the
standard procedure described in LT31 User Guide
(M210667EN).
Freezing spray
LTEH211 his equipped with an ambient
temperature switch in the power cable. The ambient temperature switch switches on hood heaters
automatically when the ambient temperature drops below +5 … 10 °C (+41 … 50 °F).
To enable operation check for the hood
heaters, you must make the ambient temperature switch on the heater power if the environment
temperature is above +5 °C (+41 °F) . Before you check if the heaters are operational, use
freezing spray to cool down the ambient temperature switch.
The following figure shows the position of
the ambient temperature switch in LT31 before final assembly. The measurement unit and
junction box cover are not installed.
