Graco Fire-Ball 992-706 A, Instructions-Parts List Manual

Page: 10 / 24

10 307-759
Troubleshooting
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
1. Relieve the Pressure before you check or service
any system equipment.
2. Check all possible causes and solutions in the
Troubleshooting Chart before disassembling the
pump.
Note: To troubleshoot or service the following system
components, refer to the instruction manuals
listed below.
Component
Manual
Spray Gun 208–237 307–046
Air Regulator 202–156 307–204
Ball Valve 208–393
307–069
Ball Valve 210–657 306–861
Swivel 204–940 308–861
Problem Cause Solution
Pump fails to operate Inadequate air supply pressure or
restricted air lines Increase air supply; clear*
Closed or clogged valves Open; clean
Clogged fluid lines, hoses,
valves, etc. Clear*
Damaged air motor Service air motor
Exhausted fluid supply Refill and reprime, or flush
Continuous air exhaust Worn or damaged air motor gasket,
packing, seal etc. Service air motor
Erratic pump operation Exhausted fluid supply Refill and reprime, or flush
Held open or worn intake valve or
piston packings Clear; Service
Pump operates, but output low on
up stroke Held open or worn piston packings Clear; service
Pump operates, but output low on
down stroke Held open or worn intake valve Clear; service
Pump operates, but output low on
both strokes Inadequate air supply or restricted air
lines. Increase air supply; clear*
Closed or clogged valves Open; clean
Exhausted fluid supply Refill and reprime, or flush
Clogged fluid lines, hoses,
valves, etc. Clear*
Packing nut too tight Loosen
Loose packing nut or worn packings Tighten; replace
* Follow the
Pressure Relief Procedure, and disconnect the fluid line. If the pump starts when the air is turned on
again, the line, etc., is clogged.