866 Challenger Series |
13
www.natvac.com | 800.253.5500
866 Challenger
Normal Operation
Oil Reservoir
• Check oil reservoir daily and fill as required.
• Drain and clean periodically depending on service.
• Clean the ballast air filter with diesel fuel regularly
Recommended RPM
• The 866 vacuum/pressure pump operates between 900 and 1200
RPM. Lower RPM result in less airflow (352 CFM at 900 RPM) but
will result in higher working vacuum level (27 “ Hg at 900 RPM).
Higher RPM will result in increased air flow (461 CFM at 1150 RPM)
and less working vacuum (23 “ Hg at 1150 RPM). RPM should be
set to meet the needs and expectations of the operator. Vacuum
relief valves should be adjusted for a maximum working exhaust
temperature of 375 degrees Fahrenheit. Pressure relief valves
should be adjusted to meet the tank manufacturer specifications.
• Too low of an RPM can cause the vanes to clatter (inconsistent
contact with the housing) causing wear.
Suction Valve
• To operate the suction valve, move the handle in the
appropriate direction for either vacuum or pressure;
center is neutral.
Vacuum Levels
• Do not operate your pump for extended periods of time at vacuum
levels which cause the pump exhaust gas temperature to exceed
375 degrees Fahrenheit.
OPERATING INSTRUCTIONS
