Schulz Compact Serie Manual De Instrucciones página 88

OCCASIONAL DEFECTS
Current of the motor above the
rating operating current.
Electric motor rotation decrea-
ses during start.
O compressor
desliga e não volta a
ligar mesmo com a pressão
na rede baixa.
The compressor starts and
immediately turns off.
Compressor turns off and won't
start even with the system
pressure low
Compressor won't turn off
after the time adjusted on
"KT3", or turns off immediately
when button 2 is pressed (SRP
3010/3015/3015 ll/3020/3025/
3030 compact)
The compressor suddenly lost
Hose that depressurizes the tank is disconnected from the admission
performance.
Pressure is too low in the air
Relief valve stuck open. Compressor will not compress the full air flow
system.
Note: Before any actions, read
the notes at the end of the trou-
bleshooting and on the display
of the Electronic Interface.
Pressure switch unadjusted (SRP 3010/3015/3015 ll/3020/3025/3030
Compressor with load/relief
cycles too fast.
PROBABLE CAUSES
Rotation reversed.
Voltage below the specification.
Compressing assembly stuck.
Commutation time of the star/delta switch too long
(analog compressor).
Admission valve open.
Voltage drop in the power supply.
Second timer or coil of contactors K2 and K3 defective.
Overload relay tripped.
High temperature.
Thermal protector went off.
Lack of oil. The temperature rises quickly.
Air/oil separator element clogged.
Phase missing on the command.
Coil of the contactors burnout.
Coil of the relay of seconds KT2 or of the contactor K1 burnout.
Pressure switch unadjusted.
Timer defective.
Belts loose or worn out.
Air filter clogged.
valve or broken. (Observe typical leak noise).
to the air system. Admission valve won't open.
Coil of solenoid valve burnout or with hole clogged.
Pipe that feeds the solenoid valve broken or disconnected.
Compact).
Air leak in some pipe of the compressor.
Air consumption too lower than the production of the compressor.
Outlet valve closed.
(In this case, pressure is too low in the air system).
Great load loss close to the compressor.
Pressure switch with range too small
(SRP 3010/3015/3015 ll/3025 Compact)
Request the presence of the Technical Assistance.
Set the time for 4 or 5 seconds by adjusting the second timer.
Check if the timer is inverting the contact on the established
Check if the coils of the contactors K2 and K3 are perfect and
Check the current and setting of the overload relay.
Check the oil level and refill it if necessary. Use LUB SCHULZ/
LUB SCHULZ SYNTHETIC oil for rotary screw air compressor.
Replace the oil filter. The first change must be done after 300
Check if there is air flow on the radiator. (Clean it if clogged).
Check the oil level and refill it (Refer to chapter Preventive
Maintenance), using LUB SCHULZ/LUB SCHULZ SYNTHETIC oil
Change the air/oil separator element and the oil, using LUB
SCHULZ/LUB SCHULZ SYNTHETIC oil for rotary screw air
Look for the cause as per the electrical scheme.
Request the presence of the Technical Assistance.
Check the restriction indicator and the conditions of the air
Request the presence of the Technical Assistance.
Turn off some compressor in parallel or install a larger tank.
Request the presence of the Technical Assistance.
88
SOLUTION
Check the rotation direction.
Recheck the dimensioning of the cables.
Check the cause.
Check the installation.
time.
receiving power.
Check if the fan is not broken (blades).
hours of operation.
Check if there is oil leak and fix it.
for rotary screw air compressor.
compressor.
Adjust the tension or replace the belts.
filter, replacing it if necessary.
Connect the hose or replace it.
Open the valve slowly.
Eliminate load loss.