Troubleshooting
333233D
9
Troubleshooting
Power Saving Mode
When fast blinking is displayed, the sprayer has entered
Power Saving Mode mode. When the sprayer is on and
pressurized but the pump has not moved any material in
30 minutes, the sprayer will enter Power Saving Mode
and will only control up to 75% of the maximum pressure.
Power Saving Mode will be exited when:
•
Material starts to dispense and causes the pump to
move, OR
•
The pressure knob is adjusted, OR
•
Power is cycled OFF and ON
Error Codes
Error codes can take two forms:
Alarm:
alerts you to the alarm cause and shuts down
the pump.
Deviation:
alerts you to the problem, but pump may
continue to run past the set limits until the system’s
absolute limits are reached.
NOTE:
The blink code is displayed using the power indi-
cator (L) on the driver. The blink code given below indi-
cates the sequence. For example, blink code 2 indicates
two blinks, a pause, and then the sequence repeats.
NOTE:
To clear an error code, first try turning the pres-
sure adjustment knob (H) counterclockwise until it stops.
If the status indicator (L) does not stop blinking shortly
after turning the knob to zero, cycle the power by turning
the power switch (E) to the off position for at least 30
seconds before turning it back on.
WLD
/
(
Blink Code
Error Type
Troubleshooting Steps
1
Alarm
Voltage Too Low
•
Verify that line voltage is within the range specified in
Technical Data
, page 24.
•
Use the recommended cord (see page 5).
•
Cycle power and check status indicator to see if error is still active.
2
Alarm
Voltage Too High
•
Verify that line voltage is within the range specified in
Technical Data
, page 24.
•
Cycle power and check status indicator to see if error is still active.
•
Verify that the outlet check valve is installed on pump and functions properly. A
faulty outlet check valve can result in excessive pump speed, causing high volt-
age internally to the electric driver.
3
Deviation
Low Temperature
•
Warm equipment.
•
Contact your Graco distributor or Tech Service for more information.
