REV
.
11
30-05-2017
INSTALLATION
,
USE AND MAINTENANCE MANUAL
JULIA 3000-5000-7000-8000-8500-9000
-
HP
34 / 51
Jurop
SpA
Via Crosera n° 50
33082 Azzano Decimo, PN (Italy)
T
EL
.
+39
0434
636811
F
AX
.
+39
0434
636812
http://www.jurop.it
e-mail: info@jurop.it
PROBLEMS
Cause
Solution
• Incorrect speed
• Check and reset
• Obstructed or leaking piping and/or filters
• Check conditions and reset
• Undersized piping
• Check maximum performance of pump
• Safety valves not calibrated
• Check and calibrate
Cause
Solution
• The centrifugal pump sucks solids Ø > 15 mm
• Install suction filter.
• The centrifugal pump vibrates and is noisy
• Possible cavitation. Reduce the pipe length on the pump suction side, and clean the
suction filter. Avoid corners or narrow sections that can cause pressure drops.
• Whistle from mechanical seal
• Possible damage due to dry running or excessive wear out.
• Leakage from the packing seal
• A small leakage is to be considered normal. If the leakage is more relevant, fasten
the screws of the setting fork. Replace the seal if the leakage carries on.
• Irregular transmission power
• Check conditions. Avoid use of cardans with excessive angle.
Note
: please see also the chapter “Troubleshooting” in the vacuum pump use and maintenance manual.
• Recycling materials allow reducing the environmental impact and
respecting the environment.
Do not dispose of in the environment. Dispose of
in compliance with the standards in force.
• Before scrapping the machine, the following materials need to be
separated and suitably disposed of:
Material
JULIA 3000
JULIA 5000
JULIA 7000
JULIA 8000
JULIA 8500
JULIA 9000
Cast Iron
83 %
83 %
80 %
78 %
78 %
78 %
Steel
16 %
16 %
18 %
20 %
20 %
20 %
Aluminum
0,2 %
0,2 %
0,3 %
0,3 %
0,3 %
0,3 %
Copper
0,2 %
0,2 %
0,1 %
0,1 %
0,1 %
0,1 %
Bronze
0,1 %
0,1 %
0,1 %
0,1 %
0,1 %
0,1 %
Vanes
0,2 %
0,3 %
0,4 %
0,4 %
0,4 %
0,4 %
Oil
0,4 %
0,4 %
0,9 %
0,9 %
0,9 %
0,9 %
Seals
0,0 %
0,0 %
0,0 %
0,1 %
0,1 %
0,1 %
Plastic
0,2 %
0,2 %
0,2 %
0,2 %
0,2 %
0,2 %
Abnormal vibrations or noise (stop Julia group)
8. Scrapping
Reduction of performances
7. Malfunctions: troubleshooting
