Jun-air JAir Dental Compressed Air System Manuel d'utilisateur télécharger pdf (Page 19)

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JUN-AIR Dental Compressed Air System User Guide CI-101A (Rev B)

Problem Possible Cause(s) Possible Solution(s)

5. Compressor cycles when there is

no air demand from the operator/

operatories

a. Leak in the compressor system a. See 4C

b. Leak in the ofce air system b. Look at the moisture indicator (see KEY PARTS

to locate.) If it is blue....With the power switch

ON, (if necessary) drain the storage tank to 80

psi to start the compression cycle. When the

cycle shuts off at 100 psi, close the air outlet

valve. Wait 5 minutes. Open the air outlet valve.

If the pressure drops, (by more than 5 psi) the

air leak is in the ofﬁce air system or delivery units

and not in the Compressor System. Call your

authorized dealer for service.

NOTE: If it is pink - see #6 below.

6. Moisture indicator is pink* a. Leak in the ofce air system a. If the moisture indicator is pink, there is too much

moisture in the system.

CAUTION: Call your authorized dealer for

service.

b. Compressor keeps cycling b. Check the “SPECIFICATIONS”. There may be

excessive demands placed on the Compres-

sor System. A larger capacity model may be

required.

c. The solenoid valve requires attention c. It is normal to hear air escaping from the sole-

noid valve when the compressor shuts off. If air

does not escape, the valve could be clogged or

sticking. Call your authorized dealer for service.

* In initial installations, the moisture indicator may appear pink before operating the system, this is due to ambient air in the sys-

tem and will change to blue after operation of the system.

TROUBLESHOOTING CHART

DIAGNOSTIC PROCEDURE FOR DEFECTIVE COMPRESSOR(S)

1. Turn compressor power switches to the OFF

position.

WARNING: Always turn off compressor

and remove power from unit when ser-

vicing or removing electrical cover. Lock

out power at the breaker prior to servic-

ing.

2. Reset the circuit breaker if it was previously

tripped.

3. Test compressors by turning ONE on at a

time using compressor switches located in

electrical panel. (Start only 1 compressor at a

time and disconnect power between testing

compressors). If the motor fails to start, or the

circuit breaker trips, the problem may be in that

compressor. Leave the compressor switch for

the defective compressor in the OFF position.

Call your authorized dealer for service.

NOTE: One or two compressors (depending

on system size) may be run temporarily while

waiting for service.

4. If all compressors run independently, but will not

run together, check the line voltage. If the voltage

is within the min/max. voltage required in SITE

REQUIREMENTS, call your authorized dealer for

service.

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Jun-air JAir Dental Compressed Air System Manuel d'utilisateur Page 19

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