Troubleshooting Machine - Stoelting F431 Service Manual

7.4 TROUBLESHOOTING - MACHINE
PROBLEM
1. Power to machine is off.
Drive motor (auger)
2. Low line voltage.
"kicks-out", or
3. Product too hard.
does not run.
4. Front door not installed securely.
1. Power to machine if off.
2. Low line voltage.
Compressor does
3. Compressor internal overload is cut-
not operate.
4. Front door not installed securely.
1. CutOut setting is too low
Product too soft.
2. Product break down.
1. CutOut setting is too high.
Freeze-up. (Product
2. Low overrun setting.
will not dispense
3. Low pump pressure.
easily.)
4. Large air pocket in barrel.
5. Auger turning counter-clockwise.
1. Seal missing or installed wrong.
2. Rear seal o-ring missing, broken or
Rear auger seal
leaks.
3. Worn or scratched shaft.
1. Spigot parts are not lubricated.
2. Chipped or worn o-rings.
3. O-rings on spigot installed wrong.
Spigot leaks.
4. Nicks or scratched on front door where
1. Drive belt tension not correct.
Drive belts slipping
2. Worn belt(s).
or squealing.
3. Low overrun.
1. Temperature control set too warm.
Mix temperature
too warm in cab.
2. Cab door is open.
1. Temperature control set too cold.
Mix temperature
too cold in cab.
POSSIBLE CAUSE
out.
not lubricated.
spigot is located.
1. Check power to machine.
2. Check, must be ±10% of nameplate voltage.
3. Raise overrun. (See Section 4.8)
4. Install front door securely.
1. Check power to machine.
2. Check, must be ±10% of nameplate voltage.
3. Check condenser (air cooled)(See Sect. 4.13),
or water supply (water cooled).
4. Install front door securely.
1. Adjust CutOut setting to match product
requirements.(See Section 3.10)
2. Fill with fresh product.
1. Adjust CutOut setting to match product
requirements.(See Section 3.10)
2. Raise overrun. (See Section 4.8)
3. Check pump pressure.
4. Purge air from barrel.
5. Change rotation to clockwise.
1. Install correctly. (See Section 3.8)
2. Inspect for breakage and lubricate properly
(See Section 3.8)
3. Replace shaft.
1. Lubricate. (See Section 3.13)
2. Replace o-rings.
3. Remove spigot and check o-rings.
4. Replace front door.
1. Adjust belt tension. (See Section 4.12)
2. Replace belts.
3. Check for air leak.
1. Decrease CabCtOut and CabCutIn (See
Section 4.7)
2. Close the cab door.
1. Increase CabCtOut and CabCutIn (See
Section 4.7)
54
REMEDY