jurop LC User Manual

INSTALLATION, USE AND MAINTENANCE MANUAL – LC
REV. 12
10-12-2021
20 / 44
Jurop SpA
Via Crosera n° 50
33082 Azzano Decimo, PN (Italia)
TEL. +39 0434 636811 FAX. +39 0434 636812
http://www.jurop.it
e-mail: info@jurop.it
PROBLEMS
THE VACUUM PUMP OVERHEATS
Cause
Solution
• Insufficient or absent lubrication
• Verify oil and rings. Check oil pump efficiency
• Low tank oil level
• Fill tank with oil
• Excessive rotation speed
• Reduce rpm to the prescribed working speed
• Prolonged functioning at max vacuum rate
• Reduce vacuum rate
• Insufficient cooling
• Check oil pump efficiency. Bleed the system with care. Check heat exchanger
efficiency
• Vacuum and/or exhaust line of insufficient diameter
• Check dimensioning
THE VACUUM PUMP DOES NOT ROTATE
Cause
Solution
• Broken vanes:
• Clean inner chambers, replace vanes
- due to infiltrated solids
• Check the secondary shutoff and filters of the suction line
- due to insufficient lubrication
• Check the oil pump
• Power transmission breakdown
• Check and replace the damaged parts
• Ice inside the pump (during the cold season)
• Remove ice and slowly start running it. Avoid suction of water
REDUCED PERFORMANCES
Cause
Solution
• Four way changeover valve in idle position
• Move the lever to vacuum or pressure mode end stroke
• Four way changeover valve not correctly registered
• Adjust the functioning play and lubricate
• Worn vanes
• Replace vanes
• The non-return valve leaks
• Clean or replace if necessary
• Worn seal rings
• Replace
• Tank gate valves or gaskets leak
• Replace damaged or worn parts
• Tank connection pipes leak or are obstructed
• Replace damaged pipes
• Obstructed primary shutoff or suction filter
• Remove and clean
• Encrusted exhaust port
• Remove and clean
• Vacuum line components are too small dimensioned
• Verify dimensions for pump maximum performances
• Obstructed rubber couplings
• Replace
UNUSUAL OIL CONSUMPTION
Cause
Solution
• Insufficient or absent lubrication
• Check and adjust the lubricating pump
• Recycling materials allow reducing the environmental impact and
respecting the environment.
• Before scrapping the machine, the following materials need to be
separated and suitably disposed of:
Do not dispose of in the environment. Dispose of
in compliance with the standards in force.
Material
Cast Iron
Steel
Alluminum
Copper
Bronze
Rubber
Vane
Oil
Gasket
Plastic
LC 300
83,1 %
12,4 %
0,7 %
0,2 %
0,2 %
0,1 %
0,6 %
2,1 %
0,1 %
0,4 %
LC 420
89,0 %
8,0 %
0,6 %
0,2 %
0,1 %
0,1 %
0,8 %
0,5 %
0,4 %
0,2 %
LC 580
88,0 %
9,0 %
0,5 %
0,2 %
0,1 %
0,1 %
0,9 %
0,4 %
0,4 %
0,2 %
LC 750
93,0 %
5,0 %
0,4 %
0,2 %
0,1 %
0,1 %
0,6 %
0,3 %
0,3 %
0,2 %
8. Scrapping
7. Malfunctions: troubleshooting

jurop LC Specifications

General

Brand	jurop
Model	LC
Category	Water Pump
Language	English