Bosch CET4-20 Operating/Safety Instructions Manual page 15

Compressor is not • Prolonged excessive use of
supplying enough air
air to operate
• Compressor is not large
accessories
enough for accessory
• Hole in air hose
• Check valve restricted
• Air leaks
• Restricted air intake filter
Regulator knob • Regulator is damaged
has continuous air
leak
Regulator will not • Regulator is damaged
shut off air outlet
Moisture in pump • Unit operating in damp or
crankcase humid conditions
• Detergent type oil being used
in pump
trouble sHootInG
• Decrease amount of air usage.
• Check the accessory air requirement. If
it is higher than the SCFM or pressure
supplied by your air compressor, a larger
compressor is needed to operate acces-
sory.
• Replace air hose.
• Remove, clean or replace
• Tighten fittings.
• Clean or replace air intake filter.
• Replace.
• Replace.
• Move unit to a dry well-ventilated area.
• Drain oil and refill with non detergent oil.
15