No Controller Operation
The G1 Pump can be controlled using an external, user
supplied, power source and controller.
Refer to the Typical Installation diagrams provided on
page 7 for correct location of the required pump ground
wire and fuses.
NOTE:
•
When using an external power source and control-
ler, Pump ON (Run) Time should be set for no lon-
ger than 30 minutes.
•
In most cases, Pump OFF (Rest) Time should be
twice as long as Pump ON (Run) time. If alternative
ON / OFF times are required, contact Graco Cus-
tomer Service for assistance.
Typical Low Level Output Response with Low Level Fluid in Grease Models
Closed
Contact
Position
Open
F
. 17
IG
332316E
Low Level Output Option
Some G1 pumps without controllers include a Low Level
Output Option. The low level signal is monitored across
PINS 3 and 4. For PIN 3 and 4 locations and wiring
information the Low Level Outputs diagram.
NOTE: A low level warning is triggered when the con-
troller detects PINS 3 and 4 have momentarily closed.
Grease Pumps
When the grease level has reached a low warning level,
PINS 3 and 4 momentarily close (1 time per paddle rev-
olution) sending the signal that the fluid has reached a
low level to the controller.
To ensure that a low level condition has been met, 3 or
more low level triggers must be detected within 1 minute
or less.
See F
. 17 for an illustration of a typical Low Level Out-
IG
put response to low grease level.
200 ms
3 s
No Controller Operation
21