Maintenance, Storage – Great Plains CDS-JohnBlue NGP Series Pumps User Manual

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MAINTENANCE

 Check oil daily and fill crankcase with a quality grade SAE 90 weight gear oil. Oil level must be visible at oil

level check plug on back of crankcase. The level plug is located at same height as the crankshaft.

 Lubricate all grease zerks on roller chain sprocket spacer, outboard cover plate, crankshaft end, and at

stuffing box flange daily. Fill zerks until grease is visibly seen seeping from mating parts. For the stuffing

box flange zerk, grease will be seen seeping from the vent on the opposite side of the flange.

 Pump oil should be changed seasonal or in extreme use conditions.
 Visually inspect sprocket and drive chain daily for excessive wear or corrosion. Lubricate chain regularly to

reduce corrosion. Chain alignment must be straight.

STORAGE

IMPORTANT – KEEP AIR OUT AND KEEP FROM FREEZING

Keep air out of the pump! This is the only way to prevent corrosion. Even for short periods of storage, the

entrance of air into the pump causes RAPID and SEVERE CORROSION. Freezing temperatures can cause the

fluid or water to freeze internally to the pump, which can cause severe damage to the wet-end castings.

OVERNIGHT

Suspension fertilizer must be flushed from the pump for ANY storage period. For Clear Liquids:

1. Steady or rising temperatures: leave pump and hoses filled with solution. DO NOT DRAIN nor admit air

to the pumps.

2. Cooling weather: (solution likely to salt out), fill pump with water and leave filled. DO NOT admit air.

3. Freezing temperature: fill pump with RV-antifreeze and leave filled, DO NOT admit air.

ONE TO TWO WEEKS

ACCEPTABLE: Flush pump thoroughly with 5 to 10 gallons of a solution that will neutralize the liquid last

pumped (refer to that manufacturer’s instructions). Fill with clean water and DO NOT DRAIN.

Keep pump sealed to exclude air. If freezing temperatures are remotely possible, the winter

storage procedure (see below) must be used to avoid damage to the pump castings.

PREFERRED: Flush pump as detailed above. IMMEDIATELY fill all passages in pump with straight RV-

antifreeze which contains a rust inhibitor. Place 1-1/2” NPT PVC plugs in the suction and

discharge fittings to keep pump full and exclude air.

WINTER STORAGE

1. Flush pump as detailed above.

2. With pump set on 10, draw in straight RV-antifreeze until the discharge is clean. If system

utilizes a flow divider (FD), pump the RV-antifreeze through the FD manifold until it is seen in the

discharge lines. Fill pump and plug suction and discharge fittings of pump to retain RV-antifreeze.