SK00-4802-DI-002-04
No.16.10.20
27
5. How to Handle Thermostat (Option)
Thermostat
(1) Set temperature:
：
250
℃
(ULK-04A,ULK-06A)
180
℃
(ULK-10A,ULK-14A)
(2) Contact arrangement: Open at set temperature (NORMAL CLOSE)
(3) Switching capacity: 1,000W AC115/220V
A thermostat attached to the ULK series as an option is a device in which a contact is opened/closed
by the thermal expansion of a metal cylinder.
Do not supply power equal to or higher than the switching capacity when in use.
When the contact of the thermostat is opened, arrange a circuit that shuts off the power to the heater.
If the thermostat is activated to shut off the power to the heater during the pump operation, remove the
cause of the abnormal increase in temperature (shortage of cooling water or oil, suspension of water
supply, etc.) and then turn on the power to the heater. Note that turning on the power to the heater
without removing the cause may cause defects.
Please refer to Clause 3.6 for the connection method.
The thermostat does not ensure detection of cooling water shortage.
An interlock for cooling water needs to be installed separately.
Figure 8: Example of thermostat connection circuit
Thermostat contact
Heater
Fuse
WARNING
