Liquid Fertilizer System Storage Procedures with John Blue™ and Demco Pumps

IMPORTANT: To prevent damage to piston pump:

Keep air out of pump. Entrance of air into the pump causes rapid and severe corrosion to the interior pump components, even for short periods of storage.

Keep pump from freezing.

Remove drive chain when not in use.

Suspension fertilizer must be flushed from the pump for any storage period.
Clear Liquid Fertilizer
Overnight	Cooling Temperatures	Solution is likely to settle out. Draw fresh water into pump and leave filled. DO NOT admit air.
Overnight	Steady or Rising Temperatures	Leave pump and hoses filled with solution.
One to Two Weeks	Acceptable	Draw fresh water into pump to dilute and flush fertilizer solution. DO NOT DRAIN. Keep pump sealed to exclude air.
One to Two Weeks	Preferred	Use approximately 19—38 L (5—10 gal.) of fresh water and operate pump to flush system thoroughly. Install 19 L (5 gal.) of SPRAY MASTER™ Winterizer Fluid or RV antifreeze1 to the tank . Operate pump to circulate winterizer into system until the solution starts to come out the openers.
Winter	Preferred	Drain any excess fertilizer from the tank and manifolds. Operate pump to clear fertilizer from distribution hoses and check valves. Use approximately 19—38 L (5—10 gal.) of fresh water and operate pump to flush system thoroughly. Install 19 L (5 gal.) of SPRAY MASTER™ Winterizer Fluid or RV antifreeze1 to the tank . Operate pump to circulate winterizer into system until the solution starts to come out the openers.