Ransburg M90 Handguns 77073, 77132 - Manual (Page 37)

AH-99-01.3
Figure 4: Troubleshooting Guide (Continued) Figure 4: Troubleshooting Guide (Continued) Figure 4: Troubleshooting Guide (Continued) Figure 4: Troubleshooting Guide (Continued) Figure 4: Troubleshooting Guide (Continued)
General Problem General Problem General Problem General Problem General Problem Possible Cause Possible Cause Possible Cause Possible Cause Possible Cause Solution Solution Solution Solution Solution
Excessive Surging Excessive Surging Excessive Surging Excessive Surging Excessive Surging
Persistent Nozzle Persistent Nozzle Persistent Nozzle Persistent Nozzle Persistent Nozzle
Clogging
Clogging Clogging Clogging Clogging
Paint Leaks Paint Leaks Paint Leaks Paint Leaks Paint Leaks
Through Center of
Through Center of Through Center of Through Center of Through Center of
Nozzle
Nozzle Nozzle Nozzle Nozzle
(Failure to Shut Off)
Paint Leaks Around Paint Leaks Around Paint Leaks Around Paint Leaks Around Paint Leaks Around
the Nozzle Cap
the Nozzle Cap the Nozzle Cap the Nozzle Cap the Nozzle Cap
Paint Leaks at Rear Paint Leaks at Rear Paint Leaks at Rear Paint Leaks at Rear Paint Leaks at Rear
of Barrel
of Barrel of Barrel of Barrel of Barrel
Orange Peel or Orange Peel or Orange Peel or Orange Peel or Orange Peel or
Rough Finish
Rough Finish Rough Finish Rough Finish Rough Finish
Paint Runs or Has Paint Runs or Has Paint Runs or Has Paint Runs or Has Paint Runs or Has
Poor Hiding
Poor Hiding Poor Hiding Poor Hiding Poor Hiding
Qualities
Qualities Qualities Qualities Qualities
1. Restriction in pump air line
2. Insufficient pump capacity
3. Clogged paint filter
4. Low air volume capacity
5. Nozzle too large
1. Paint allowed to dry in
nozzle or line
2. Paint gun filter too coarse
or damaged
3. Paint pigments too coarse
1. Loose nozzle cap
2. Improper trigger adjustment
3. Defective or dirty valve
seat
1. Loose nozzle cap
2. Fluid seal worn
1. Loose packing nut
1. Evaporation rate too fast
2. Poor atomization
3. Viscosity too high
1. Low solids paint
2. Low viscosity
3. Excessive delivery
1. Remove restriction.
2. Secure larger pump or reduce output.
3. Service or replace.
4. Check factory air capacity.
5. Replace with correct nozzle.
1. Flush lines with solvent after each use.
2. Replace or change to finer screen paint filter.
3. Pre-filter paint and/or use larger nozzle orifice.
1. Tighten nut.
2. Readjust.
3. Flush out or replace as needed.
1. Tighten nut.
2. Replace seal.
1. Tighten packing nut.
1. Use slower evaporating solvent.
2. See "Poor Atomization".
3. Add solvent or heat.
1. Use less solvent.
2. Use less solvent.
3. Use smaller nozzle, wider fan angle, lower
pump pressure.
M90 Handguns - Maintenance
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