jurop PR 150, Instructions For Installation, Use And Maintenance Manual

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A. The pump overheats
Cause Correction
• Faulty lubrication. • Check the lubrication system and the oil pump.
• Oil missing. • Re-fill the tank.
• Revolutions to high. • Reduce revolutions.
• Operation-time too long at too • Operate at lower vacuum rate
high vacuum. (See point 2.9 - pag. 7).
• Reduced cooling. • Check the performances of the centrifugal water recycling pump,
the correct design and efficiency of the heat exchanger and check
and vent thoroughly the whole cooling system.
B. The pump does not run
Cause Correction
• Broken vanes due to suction of foreign objects • Take apart the pump and replace damaged parts. Check primary
or bad lubrication or excess of wear. shut-off and lubrication system.
• Frozen pump. • Unfreeze the vacuum pump.
• Damaged drive system. • Check and replace damaged parts.
C. Reduced performances of the pump (vacuum/pressure/air flow)
Cause Correction
• Change-over 4 way valve in neutral position. • Check position of inside baffle (cock) and manual lever
or pneumatic actuator.
• Worn sliding-vanes. • Replace the vanes.
• Loose check-valve. • Replace the valve.
• Worn sealing rings. • Replace the rings.
• Blocked vacuum pump. • See previous instructions (point B).
• Leaking of the gate-valves of the tank. • Tighten the valves or replace them.
• Leaking of the seals of the tank. • Repair or replace the seals.
• Primary shut-off blocked. • Dismount and clean the parts.
• Clogged connecting pipeline • Clean the steel pipelines or replace the rubber ones.
• The suction filter is clogged • Clean the cartridge.
• Accessories and whole vacuum line undersized • Check the design according to the maximum performances
of the vacuum pump (see pag. 4).
4.9 Trouble-shooting
TROUBLES