Make sure wires are connected
securely via crimp contacts at the
end of the power cord.
Caution
Never put other voltage than rated
voltage. Otherwise electronic circuit
may be broken.
3) Be sure to connect ground wire.
4) Do not share a plug socket with a
high power equipment which may
generate surge voltage. Otherwise
electronic circuit may be failed.
Pay attention to noise generated
by inverter or so.
- 15 -
Installation
●
Precaution when pump power is turned ON/OFF by relay.
Caution
The control unit is equipped with CPU. It is recommended to
stop the pump through STOP input terminal. Avoid turning ON/
OFF power source because it may cause malfunction of CPU.
If there is no choice but turning ON/OFF power, pay attention
to following points.
In case power is turned ON/OFF by the relay, its contact vol-
ume must be 5A or more. Contact point may be welded if con-
tact volume is 5A or below.
P
Surge absorption
element
P
Noise cut transformer
a. Install a surge absorption element
(Varister or so of 2000A or more
durability) at pump power connec-
tion part.
b. Install noise cut transformer.
5) The control unit can be removed
easily from the pump driving
unit. Do not mount the control
unit to a different pump model.
Electronic circuit or driving unit
may be damaged.
●
Surge voltage
Caution
Electronic circuit of the control unit may be failed by extremely
large surge voltage. Do not place the pump near to the high
power equipment of 200V or more which may generate large
surge voltage. If use of high power equipment is inevitable,
take any of the following measures.
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