REV
. 10
22-04-2020
INSTALLATION
,
USE AND MAINTENANCE MANUAL
–
PN
21 / 40
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: [email protected]
PROBLEMS
Cause
Solution
• Faulty lubrication
• Check the oil pump
• Missing oil
• Fill up the oil tank
• Revolutions to high
• Reduce the speed
• Operating time too long at too high vacuum rate
• Decrease the vacuum rate
• Insufficient diameter of vacuum and discharge line
• Check the correct dimensions of the line (minimum suggested DN60)
Cause
Solution
• Brocken vanes:
• Dismantle the pump and change the vanes
- due to foreign parts
• Check/clean the filters and elements on the vacuum line
- due to faulty lubrication
• Check the lubrication pump
• Damaged drive system
• Change the damaged parts
• Frozen up pump
• Warm-up the pump
Cause
Solution
• 4-way valve handle in neutral position
• Move the handle against the resting pin
• Worn vanes
• Change the vanes
• Leaking check valve
• Clean the check valve
• Worn O-rings
• Change the seals
• Leaking gaskets and/or valves on the vacuum tank
• Change that damaged parts
• Clogged connecting pipeline
• Change the damaged hoses - pipes
• Floating ball or air filter obstructed
• Dismantle and clean
• Crusted up exhaust manifold
• Dismantle and clean
• Vacuum line components under-dimensioned
• Check the dimensioning for the pump model at hand
• Rubber connection obstructed or damaged
• Change the connections
Cause
Solution
• Drip-oiler/s badly adjusted
• Adjustment as described
• Oiler’s pin not sealing
• Clean the related seat
Abnormal oil consumption
Reduced performances
The pump is blocked
Overheating
7. Malfunctions: troubleshooting