Troubleshooting
SM_MC_6P Ver.2.0_2021
37
E
1
2
3
4
5
Symptom: Machine doesn’t start when acti-
vating the spray gun.
Cause: Defective reed switch (3) or stocked
flow piston (2).
Remedy: Replace defective parts.
Symptom: Irregular working pressure.
Cause: Injector nozzle (4) is worn.
Remedy: Replace injector nozzle.
Symptom: Low working pressure
Cause: By-pass valve kit (1) worn and leaks
water.
Remedy: Replace By-pass valve kit.
Symptom: Suction inlet for detergent leaks
water. Water flowing back to detergent tank.
Cause: Non return valve (5) defective.
Remedy: Replace non return valve.
Pic. E1: By-pass valve..
By-pass valve failures NA6 (NA5)
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