Storch Airless ST 850 Handbuch Seite 174

Problem
Sprayer does not run at all
AND display shows E = 06
OR control board status light
blinks 6 times repeatedly
Sprayer does not run at all
AND display shows E = 08
OR control board status light
blinks 8 times repeatedly
Basic electrical problems
Original instruction
What to check
Motor is hot or there is a
fault in the motor thermal
device.
Check voltage supply to
the sprayer (incoming vol-
tage too low for sprayer
operation).
Motor leads are securely
fastened and properly
mated
For loose motor brush lead
connections and terminals.
Brushes must be 1/2 in.
[13 mm] minimum.
NOTE: Brushes do not
wear at the same rate on
both sides of motor. Check
both brushes.
Broken or misaligned
motor brush springs. Rol-
led portion of spring must
rest squarely on top of
brush.
Motor brushes may be bin-
ding in brush holders.
Motor armature commuta-
tor for burn spots, gouges
or extreme roughness.
174
How to check
Allow sprayer to cool. If sprayer runs when cool, correct
cause of overheating. Keep sprayer in cooler location
with good ventilation. Make sure motor air intake is not
blocked. If sprayer still does not run, replace motor.
Turn ON/OFF switch OFF and disconnect power to the
sprayer.
Replace loose terminals; crimp to leads. Be sure termi-
nal are firmly connected. Clean circuit board terminals.
Securely reconnect leads.
Tighten terminal screws. Replace brushes if leads are
damaged.
Replace brushes.
Replace spring if broken. Realign spring with brush.
Clean brush holders. Remove carbon with small clea-
ning brush. Align brush leads with slot in brush holder to
assure free vertical brush movement.
Remove motor and have motor shop resurface commu-
tator if possible.