Troubleshooting; Fix Spraying Problems - WAGNER 770 Owner's Manual

Troubleshooting

Fix Spraying Problems

Problem A: The sprayer does not start
Cause
1. Sprayer is not plugged in
2. ON/OFF switch is set to OFF
3. The sprayer shuts off while under pressure
4. No voltage is coming from wall plug
5. The extension cord is damaged or has too low a capacity
6. There is a problem with sprayer motor
Problem B: The sprayer starts but does not draw material when the PRIME/SPRAY knob is set to PRIME
Cause
1. The sprayer will not prime properly or has lost prime
2. The hopper is empty
3. The sprayer is not on level ground
4. The inlet filter is clogged
5. The inlet valve is stuck
6. The outlet valve is stuck
7. The inlet valve is worn or damaged
8. The PRIME/SPRAY valve is plugged
Problem C: The sprayer draws up material but the pressure drops when the gun is triggered
Cause
1. The spray tip is worn
2. The inlet filter is clogged
3. The spray tip is plugged
4. The spray gun filter is clogged
5. The material is too heavy or coarse
6. The outlet valve assembly is dirty or worn
7. The inlet valve assembly is damaged or worn
22
Before servicing, always release system
pressure by following Pressure Relief
Procedure (page 7).
Solution
Plug sprayer in
Turn ON/OFF switch to ON
Motor will cycle ON and OFF while spraying to regulate pressure. This is normal
Test the power supply voltage
Replace extension cord
Take sprayer to Wagner Authorized Service Center
Solution
Refer to Getting Material to Flow section see page 9
Refer to Load Material and Getting Material to Flow sections see pages 8-9
Relocate sprayer to level ground
Refer to Clean the Inlet Filter see page 14
Inlet may be stuck from old material. Push filter tab to release. If still stuck refer to Clean
the Inlet Filter see page 14 or Replace the Inlet Valve see page 24 *
Refer to Replacing Outlet Valve see page 24
Refer to Cleaning or Replacing Inlet Valve see page 24 *
Take sprayer to Wagner Authorized Service Center
Solution
Replace spray tip with a new one**
Refer to Clean the Inlet Filter see page 14
Refer to Clear the Spray Tip see page 13
Refer Clean the Spray Gun Filter see page 15. Keep extra filters on hand
Thin or strain the material
Refer to Replacing Outlet Valve see page 24 *
Refer to Clean or Replace Inlet Valve see page 24 *
Troubleshooting • Fixing Spraying Problems
English