JUN-AIR JAir Dental Compressed Air System - Manual (Page 18)

18
CI-101A (Rev B) JUN-AIR Dental Compressed Air System User Guide
© 2011, JUN-AIR
We reserve the right to make any alterations which may be due to any technical improvements
Printed in the USA
TROUBLESHOOTING CHART
Problem Possible Cause(s) Possible Solution(s)
1. Motor/compressor does not start a . No electric power a . Check circuit breaker at main power source
b . Power not connected b . Check 24 volt remote connections
c . Defective power switch c . Power switch needs to be replaced . Call your
authorized dealer for service . Check compres-
sor power switches are in the ON position
d. Fuse is blown/damaged d . Check fuse in electrical enclosure
2 . Motor tries to start, circuit
breaker trips a . Voltage too low . If each compressor head
runs separately, but not together, the volt-
age is too low
a . Compressor requires a minimum of 208 volts .
If the voltage is too below required minimum, a
buck-boost transformer must be installed
b . Solenoid valve does not open when com-
pression cycle ends
b . Check the solenoid valve . If it does not open at
the end of the cycle, call authorized dealer for
service
c . Pinched drain tubing from solenoid valve c. Remove kink/pinch in drain line and verify proper
operation
d . Power supply cable too small d . See SITE REQUIREMENTS
e. Loose electrical connection e . Call authorize dealer for service
3 . Unusual or excessive noise a . Intake filter(s) not seated correctly a . Remove filter(s) and replace if clogged or dirty .
When installing, make sure filter chamber is
clean and filter is sealed properly .
b . Intake filter(s) clogged or dirty b . Replace filters
c . Motor or compressor noise c . Call authorized dealer for service
d . Air leaks d . Close the air outlet valve . Check all fittings for
leaks . If leak is found, call authorized dealer for
service .
e . Check cooling fans e . If fan is loose or broken, call authorized dealer for
service .
4 . Compressor cycles but does
not buid up pressure to 100 psi a . Solenoid valve does not close or leaks
when compressor runs
a . Check the solenoid valve . Call authorized dealer
for service .
b . Clogged or dirty intake filters b . Replace intake filters
c. Leak in compressor system c . Close the air outlet valve . Check all fittings for
leaks . If leak is found, call authorized dealer for
service. (See “Testing Compressor for Leaks” in
MAINTENANCE section .)
d . Pressure switch needs adjusting d . Disconnect main power supply . Drain air tank
slowly until you hear a “click” . Air tank should
read approx . 80 PSI on the system pressure
gauge . Close the air outlet valve, turn on the
power switch and verify the pump-up time for
your model . Call authorized dealer for service
(see “System Checks and Tests” for pump up
and recovery times .)
e. Leak in the office air system e . With the power switch ON, ensure the compres-
sors are running . Close the air outlet valve and
wait for the compressor system to shut off at
100 psi . Wait 5 minutes and open the air outlet
valve . If the pressure drops (by more than 5 psi
or the compressors start again) the leak is in
the office air lines or delivery units . Contact your
authorized dealer for service