Basic Motor Operation - Graco E-Flo DC Series Instructions - Parts Manual

Operation

Basic Motor Operation

The basic motor has three operating modes:
• Pressure Mode
• Pressure Mode with Integrated Runaway
Protection
• Flow Mode
NOTE: Before changing from one mode to another,
turn the Control Knob (N) fully counterclockwise to 0.
Pressure Mode
When in pressure mode, the motor will adjust the
speed to maintain a constant fluid pressure.
1. See Fig. 11. Turn the Control Knob (N) fully
counterclockwise to 0.
2. Pull the Mode Select switch (M) out to set. Turn
the switch to Pressure
to lock.
3. Pull the Control Knob (N) out to set. Turn the
knob clockwise to increase the pressure, or
counterclockwise to decrease the pressure.
Push the knob in to lock.
Figure 11 Pressure Mode
14
. Push the switch in
Pressure Mode with Integrated Runaway
Protection
In pressure mode with integrated runaway protection,
the motor will adjust the speed to maintain a constant
fluid pressure, but will shut down if it exceeds a
user-set speed.
1. See Fig. 12. Turn the Control Knob (N) fully
counterclockwise to 0.
2. Pull the Mode Select switch (M) out to set. In
the Runaway range, turn the switch to the
desired shutdown speed in cycles per minute (5,
10, 15, 20, or 25). Push the switch in to lock.
3. Pull the Control Knob (N) out to set. Turn the
knob clockwise to increase the pressure, or
counterclockwise to decrease the pressure.
Push the knob in to lock.
NOTE: The motor will shut down if the selected
speed is exceeded for 5 cycles. To reset, turn the
Control Knob (N) fully counterclockwise to 0, then
turn to the desired pressure.
Figure 12 Pressure Mode with Integrated Runaway
Protection
3A2526D