Graco 309004C Manual De Usuario

 

 

The CycleFlo II is a pneumatic pump controller that allows precise control over the cycle rate of the pump and 
therefor the flow rate.  
 
The pump cycle is initiated by a 120 volt signal. The pump cycle may be initiated by some other piece of equipment 
such as a timer or a pH controller. An isolation relay may be required in some installations. Always follow local and 
applicable electrical codes. The CycleFlo II will halt the pump cycle whenever the 120 volt signal is removed. 
 

 
Electrical Connections 

An access hole with a strain relief installed has been provided for the external power connection. Due to the unique 
requirements of each installation, access holes have not been provided for the other optional external wiring 

connections such as the external air supply 
valve signal. Have a qualified electrician 
determine the proper strain relief, wire type, and 
wire size for your particular application. When 
positioning or adding access holes, be careful 
not to damage any internal components. Failure 
to use the proper strain relief, wire type and wire 
size can cause damage to internal components 
or personal injury. 

 

 

 

 

 

 

 

To reduce the risk of fire, explosion, or electric 
shock: 

•  The power source conduit is not an 

adequate grounding for the system. The 
unit must be grounded to a true earth 
ground. 

•  A qualified electrician must complete all 

grounding and wiring connections and 
check the resistance. 

•  Refer to your local code for the 

requirements for a “true earth ground” in 
your area. 

 

 
There are three connections on the 120V input 
signal terminal block (see Fig. 1). The two right-
hand connections are for line and neutral wires 
respectively. The left-hand connection is for a 
true earth ground. 
 
 
 
 
 

 
 
 

5      309004