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I
NSTALLATION
,
USE AND MAINTENANCE MANUAL
–
PN130-140-155-155R
R
EV
.
07
23-04-2015
17 / 36
Jurop
SpA
Via Crosera n° 50
33082 Azzano Decimo, PN (Italia)
T
EL
.
+39
0434
636811
F
AX
.
+39
0434
636812
http://www.jurop.it
e-mail: info@jurop.it
PROBLEMS
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
• Vacuum and/or exhaust line of insufficient diameter
• Check dimensioning
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
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
Cause
Solution
• Insufficient or absent lubrication
• Check and adjust the lubricating pump
• Before scrapping the machine, the following materials need to be
separated and suitably disposed of:
•
Hydraulic oil.
•
Rubber and plastic parts, such as hoses.
•
Steel and aluminium parts.
• 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.
Unusual oil consumption
Reduced performances
The vacuum pump does not rotate
8. Scrapping
The vacuum pump overheats
7. Malfunctions: troubleshooting