No Controller Operation
22 332291C
No Controller Operation
The G3 Pump can be controlled using an external, user
supplied, power source and controller.
Refer to the Typical Installation diagrams provided on
page 8 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.
Low Level Output Option
Some G3 pumps without controllers include a Low Level
Output Option. It can be configured with an M12 con-
nector in code location “G” or with a DIN connector in
code location “K”. (See Understanding the Model Num-
ber, page 4.)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, page 15.
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
IG. 20 for an illustration of a typical Low Level Out-
put response to low grease level.
Typical Low Level Output Response with Low Level Fluid in Grease Models
FIG. 20
