Koshin PBX Serie Manual De Uso página 5

6. Thermal protector
A thermal protector is installed inside the pump to protect the motor.
If the pump is operated at excessive load for some reason, the thermal protector
automatically stops the pump to protect the motor. (Once the motor temperature has cooled,
it restarts automatically.)
If this situation continues, carry out the following inspections.
* Always remove the power plug from the power supply whenever you conduct an
inspection.
● Has any foreign matter (such as lint, solids or filth) gotten stuck and locked the
impeller ?
● Has the power supply voltage become lower? (If using an extension cord or
generator)
● Is the pump being used for liquid with a high specific gravity or high viscosity?
7. Operation of the air valve
This pump is fitted with an air valve. The air valve prevents air lock from occurring on
DANGER
operation start up, and a continuous airflow through the air valve will cool the motor,
preventing overheating with the pump is running dry (without water).
WARNING
CAUTION
If debris, etc., becomes stuck in the air valve, it may not operate correctly.
Check that there is no foreign matter in the air valve before installing and operating
the pump.
Fig. 4
a. At operation start up
8. When using a generator, it must have a capacity 3–5 times of the electric power consumption
of the pump.(Read the operating manual of the generator carefully and use it correctly).
b. During normal operation
OPEN
c. During dry operation
CLOSED
5
OPEN