Maintenance; Troubleshooting - Storch Airless ST 850 Handbuch

Maintenance

Routine maintenance is important to ensure proper ope-
ration of your sprayer. Maintenance includes performing
routine actions which keep your sprayer in operation and
prevents trouble in the future.
Activity
Inspect/clean sprayer filter, fluid inlet strainer, and gun filter.
Inspect motor shield vents for blockage.
Fill piston oil by adding through piston oil fill point.
Inspect motor brushes for wear. Brushes must be 1/2 in. (13 mm) mini-
mum length.
NOTE: Brushes do not wear at the same rate on both sides of motor.
Check both brushes.
Check sprayer stall.
With sprayer gun NOT triggered, sprayer motor should stall and not
restart until gun is triggered again. If sprayer starts again with gun NOT
triggered, inspect pump for internal/external leaks and check prime valve
for leaks.
Throat packing adjustment
When pump packing begins to leak after extended use, tighten packing
nut down until leakage stops or lessens. This allows approximately 370
liters of additional operation before a repacking is required. Packing nut
can be tightened without 0-ring removal.

Troubleshooting

Mechanical/Fluid Flow
1. Follow Pressure Relief Procedure, before checking or
repairing.
2. Check all possible problems and causes before disas-
sembling the unit.
Problem
For units with display: E = 0X
is displayed.
For units with no display:
Control board status light is
blinking or the light is off and
there is power to the sprayer.
Pump output is low
What to check
If check is OK, go to next check
Fault condition exists.
Spray tip worn.
Spray tip clogged.
Paint supply.
Intake strainer clogged.
Intake valve ball and piston ball are
not seating properly.
Fluid filter or tip filter is clogged or
dirty.
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Interval
Daily or each time you spray
Daily or each time you spray
Daily or each time you spray
Every 3785 liters
Every 3785 liters
As necessary based on usage
What to do
When check is not OK, refer to this column
Determine fault correction from Troubleshoo-
ting.
Follow Pressure Relief Procedur then replace
tip. See separate gun or tip manual.
Relieve pressure. Check and clean spray tip.
Refill and reprime pump.
Remove and clean, then reinstall.
Remove intake valve and clean. Check balls
and seats for nicks; replace if necessary. See
pump manual. Strain paint before using to
remove particles that could clog pump.
Clean filter.
Original instruction