NAKAYAMA NS2520 Spray Pumps Instruction Manual

NS2520
ART NO:053569

Description of main part

Operating in truction

1. Check every fastener and make sure that the sprayer and the motor are installed firmly on the frame.
2. Set the two pulleys in a straight line, and the belt in an appropriate tightness.
3. Every joint of the hoses must be tightened to prevent from leaking.
4. Before starting the motor, shut off the cock Valve. Loosen the pressure adjusting screw and pull the pressure adjuster to the top.
5. Start the motor to power the sprayer, keep a proper revolution. Press the pressure adjuster to the bottom. Keep the pressure around 21-35Kgs by adjusting the pressure adjusting screw.
6. Open the cock valve to start spraying.
7. After the spraying is over, pull the pressure adjuster to the top and operate the sprayer with fresh water to clean out the remaining chemicals.

Warning: Please add SAE30 oil before using the pump for the fi st time

Pump Lubricatio

1. Replace the engine oil after the sprayer has been used for the first 10 hours, 50 hours, and thence every 70 hours.
2. Drain away the dirty engine oil by screwing off the Drain Plug.
3. After the drain plug is screwed on, remove the oil inlet cover and refill with #30-40 fresh engine oil.
4. Keep the oil Level at 2/3 of the oil glass.
5. Always fill the grease cups with grease. Screw on the grease cups 2-3 cycles every 2 hours of spraying.

Troubleshootin

A. Feeding failure & pressure instability

1. Check whether the suction hose is leaking or is stuck.
2. Open the cock valve to release the surplus air.
3. Remove the suction chamber and the water outlet chamber and check if the valve assembly are stuck or damaged.

B. Pressure insufficien

1. Check whether the pressure has been adjusted properly, (refer to the operation instruction No.5).
2. Check whether the belt is too loose.
3. Check whether the spray hose and the couplings are broken and damaged.

C. Cylinder leakage

1. Remove the dust-proof cover and wind up the adjusting rings.
2. If still in vain replace the V-packings in the cylinder.

Technical data

Flow:
Pressure:| 15 – 22 Lt/min
2,1 – 4,5 Mpa
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Power:
Weight:| 1,5 – 2 kW / 3,5 ~ 4 hp
8,5 kg

• The manufacturer reserves the right to make minor changes to product design and technical specifications without prior notice unless these changes significantly affect the performance and safety of the products. The parts described / illustrated in the pages of the manual that you hold in your hands may also concern other models of the manufacturer’s product line with similar features and may not be included in the product you just acquired.
• To ensure the safety and reliability of the product and the warranty validity, all repair, inspection, repair or replace-ment work, including maintenance and special  adjustments, must only be carried out by technicians of the authorized service department of the manufacturer.
• Always use the product with the supplied equipment. Operation of the product with non-provided equipment may cause malfunctions or even serious injury or death. The manufacturer and the importer shall not be liable for injuries and damages resulting from the use of non-conforming equipment.

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