21
7 Troubleshooting
Type of Malfunction Possible Causes Corrections
Air bubbles in the product.
– Product reservoir is empty.
– Product hose not correctly connected.
– Dispensing valve not correctly
connected or defective.
– Product reservoir pressure is too high.
• Refill product reservoir (see
section 5.2).
• Connect product hose correctly.
• Check the dispensing valve (see
instruction manual for dispensing
valve).
• Lower pressure, longer dispensing
time.
Pressurized air escapes
between reservoir housing
and reservoir lid.
– Reservoir knob 2 not tightened.
– O-ring leaky.
• Tighten the reservoir knob.
• Grease or renew the O-ring.
Pressurized air escapes in
the reservoir housing.
– Punctured rupture disc.
– Depressurizing valve 10 open or
defective.
• Replace the rupture disc (see
section 7.2).
• Close the depressurizing valve or
change it.
Pressurized air escapes at
the product connection 1.
– Union nut on the product connection
not tightened.
• Carefully tighten the union nut.
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