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| 866 Challenger Series
www.natvac.com | 800.253.5500
Cold Weather Operation
Confirm pump is not frozen
• Prior to engaging the pump, turn by hand to confirm it is not frozen.
If pump is frozen, thaw it.
• If the pump is frozen, move the truck into a heated building.
Avoid freezing problems
• You can avoid freezing problems by putting a small amount of diesel
fuel into the pump at the end of the day.
VANE ANALYSIS TRACKING SHEET
DATE
WEAR (IN)
REPLACEMENT?
COMMENTS