National Vacuum Equipment 607 challenger series Owner's Manual And Operating Instructions - Maintenance
607 Challenger
Series | 15
www.natvac.com | 800.253.5500
Maintenance
Washing
• Periodically wash the mud and dirt off of your pump as it
must be clean to allow heat to radiate from it
Flushing
Werecommendperiodicflushingofyourpump.Todothis:
1 Connectthehosetotheflushvalvelocatedonthesideof
the inlet port
2 Put the end of the hose in a one pint container of diesel
fuel Start your pump and run as slow as possible
3 With the suction valve in the vacuum position, monitor the
dieselflowtoyourpump.
4 When the diesel fuel is gone, switch the suction valve to
neutral and run the pump for 2 minutes
5 Speed the pump up to normal RPM, switch the suction
valve to vacuum
6 Remove the hose and close the valve
7 Properlydisposeofusedoilandflushingfluid.
Checking Vane Wear
• We recommend checking vane wear at least every 12
months
• Anewvaneisflushwiththeoutsidediameteroftherotor.
• Remove the plug from the vane check port, insert a rod
to rotor O D , rotate rotor until the rod falls into one of the
vane slots If the rod falls more than a 1/4” into any of the
7 vane slots, it’s time to replace the vanes
• Vanes should be replaced in sets and it is always a good
idea to have an extra set of vanes on hand for emergen-
cies