Driver Troubleshooting. Graco 3A5379B, Electric Supply System for Sealants and Adhesives

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Driver Troubleshooting. Graco 3A5379B, Electric Supply System for Sealants and Adhesives | Manualzz

Driver Troubleshooting

Driver Troubleshooting

Power Saving Mode

When fast blinking is displayed, the driver has entered

Power Saving Mode. When the driver is on and pressur ized, but the pump has not moved any material in 30 min utes, the driver will enter Power Saving Mode and will decrease pressure to 75% of the maximum pressure while stalling.

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 the 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 listed below indi cates the sequence. For example, blink code 2 indicates two blinks, a pause, and then the sequence repeats.

/

.

WLD

NOTE: To clear an error code, first try turning the driver pressure adjustment knob (AK) 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 disconnect switch (K) to the OFF position for at least 30 seconds before turning it back ON.

20 3A5379B

Driver Troubleshooting

1

Blink Code

2

3

4

5

6

7

Error Type

Alarm

Alarm

Deviation

Deviation

Alarm

Alarm

Alarm

Troubleshooting Steps

Voltage Too Low

• Verify that the line voltage is within the range specified in Techni cal Specifications , page 51.

• Use the recommended cord (see page 10).

• Cycle the power and check the status indicator to see if the error is still active.

Voltage Too High

• Verify that the line voltage is within the range specified in Techni cal Specifications , page 51.

• Cycle the power and check the status indicator to see if the error is still active.

• Verify that the outlet check valve is installed on the pump and func tions properly. A faulty outlet check valve can result in excessive pump speed, causing high voltage internally to the electric driver.

Low Temperature

• Warm equipment.

• Contact your Graco distributor or Tech Service for more informa

tion.

High Temperature

The temperature of the system is near the maximum operation tem perature. The performance has been reduced to prevent the driver from completely shutting down.

• Check fan operation. Clean the fan and driver housing. Verify the fuses are intact in the junction box.

• Reduce the pressure, duty cycle, or gun tip size.

• Move the unit to a cooler location.

Driver Motor Temperature Fault

The motor is running too hot. Allow the unit to cool.

• Check fan operation. Clean the fan and driver housing. Verify the fuses are intact in the junction box.

• Reduce the pressure, duty cycle, or gun tip size.

• Move the unit to a cooler location.

Board Temperature Fault

The control board is running too hot. Allow the unit to cool.

• Check fan operation. Clean the fan and driver housing. Verify the fuses are intact in the junction box.

• Reduce the pressure, duty cycle, or gun tip size.

• Move the unit to a cooler location.

Driver Motor Encoder Calibration Error

• Cycle the power and check the status indicator to see if the error is still active.

• Calibrate the encoder (see page 29).

• Contact your Graco distributor or Tech Service for more informa tion.

3A5379B 21

Driver Troubleshooting

8

Blink Code

9

10

11

12, 13

Fast Flash

Error Type

Alarm

Alarm

Alarm

Alarm

Alarm

Deviation

Troubleshooting Steps

Encoder Error

• Cycle the power and check the status indicator to see if the error is still active.

• Verify that the encoder cable is connected securely.

• The encoder may need to be replaced.

• Contact your Graco distributor or Tech Service for more informa

tion.

Software Versions Do Not Match

• Obtain the software update token and follow Software Update

Procedure on page 30

(contact your Graco distributor or Tech Service for more informa tion).

Circuit Board Communication Failure

• Cycle the power and check the status indicator to see if the error is still active.

• Contact your Graco distributor or Tech Service for more informa

tion.

Internal Circuit Board Hardware Failure

• Cycle the power and check the status indicator to see if the error is still active.

• Contact your Graco distributor or Tech Service for more informa tion.

Internal Software Error

• Cycle the power and check the status indicator to see if the error is still active.

• Contact your Graco distributor or Tech Service for more informa tion.

See Power Saving Mode , page 20.

Problem

Driver does not turn over and LED is off

Driver does not turn over and LED is on

Oil is leaking

Over voltage (greater than 300 V)

No power to control board

Encoder fault

Cause

Oil was over-filled

Drain plug not tightened properly

Seal cartridge o-ring missing or dam

aged.

Solution

• Check the power supply

• Contact your Graco distributor or

Tech Service for more informa tion.

• Cycle the power.

• Contact your Graco distributor or

Tech Service for more informa

tion.

• Drain and refill as stated in

Check Oil Level , page 16.

• Torque to 18-23 ft-lb (25-30

N•m).

• Replace the shaft bearing assembly.

22 3A5379B

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