607 PRO Challenger
Series |
19
www.natvac.com | 800.253.5500
Problem: No vacuum
Causes:
• Suction valve is in neutral
• Worn seals or vanes
• Pump is not turning fast enough
• Check valve or suction valve is clogged
• Leak in the tank or fittings
• Collapsed hose between the pump and shutoffs
• Inlet filter clogged
System Troubleshooting
Locating the source of the trouble
If you notice a decrease in pump performance, start troubleshooting
at the pump�
• Remove the suction and discharge hoses at the pump�
• Start the pump and run it in vacuum only at its
normal RPM
• Check the vacuum level at the pump inlet� The 607 PRO
Challenger in new condition will develop 27-28�5” hg�
• If the pump checks out ok, check the vacuum level at the
secondary, then the primary shutoff� Keep working your
way back until you find the problem.
