6190762 (Rev B)
Beverage System User Guide
© 2023, Gast Manufacturing
We reserve the right to make any alterations which may be due to any technical improvements
Printed in the USA
16
Troubleshooting - continued
CAUTION
Switch off and isolate from electrical supply before removing
any parts from the system. Empty receiver of air before
dismantling parts of system. Only qualified personnel should
perform troubleshooting activities.
1.
System does not start:
a) No power from wall . Check circuit fuses and plug (no
fuses on system) .
b) Breakage or loose connections in electrical wiring .
c) Defective capacitor .
d) The thermal protection has switched off the pump due
to overheating . When cooled the pump will automatically
turn on at a suitable operation temperature . Go through
the points in step 5 .
e) The system has not been unloaded and there is back
pressure . Make sure that the system purges each time it
stops (listen for purge noise) .
f) The pump is locked .
g) Pressure in the air receiver is too high for activation of the
pressure switch . The pressure switch completes circuit
only when pressure has dropped to preset start pressure .
Empty receiver . Relieve system pressure and restart .
2.
System does not start, makes a buzzing sound followed by a
clicking noise (cannot start against high pressure):
a) Leaky non-return valve . Use soapy water to find out
whether air leaks from the valve . If so, clean or replace .
3
System works, but pressure does not increase:
a) Intake filter clogged . Replace .
b) Leaks in fittings, tubes or pneumatic equipment . Check
with soapy water or by letting unit stay overnight with
disconnected mains . Pressure drop is not to exceed 1 bar
(14 .5 psi) .
c) Check the compressor cups . Replace, if necessary .
d) Defective valve plate . Contact your equipment provider .
e) Failure in non-return valve which is creating a flow
restriction .
4.
Loud noise from system:
a) Dirt or failure in non-return valve . Clean or replace .
b) System is purging during off cycle . This is normal
operation .
5.
System gets very hot:
a) Leaks . See Step 3b .
b) Too high ambient temperature . Ensure adequate
ventilation if the system is installed in a cabinet .
c) Overloaded . Allow system more cooling time between
operations .
6.
System starts when no air is being used:
a) Leaks . See Step 3b .
7.
System does not switch on against pressure or does not
switch off at max. pressure:
a) Defective pressure switch . Replace .
