Specifications

3
Installation
1. Always mount the pump with oil sight tube in the upright
position.
2. Proper selection of type and size of hose is vital to good
performance:
a. Use suction line of spiral wire braid reinforced suction
hose to prevent collapse. Diameter of inlet hose
should be at least that of the pump inlet hose barb or
greater.
b. Use only approved high pressure hose on discharge
side of pump.
3. All ports are provided with hose barb connections. Use
good quality hose clamps, and tighten securely.
NOTE: Use only pipe, fittings, accessories, hose, etc.
rated for the maximum pressure rating of the pump.
Hazardous Substance Alert
1. Always drain and flush pump before servicing or
disassembling for any reason (see instructions).
2. Always drain and flush pumps prior to returning unit
for repair.
3. Never store pumps containing hazardous chemicals.
4. Before returning pump for service/repair, drain out all
liquids and flush unit with neutralizing liquid. Then, drain
the pump. Attach tag or include written notice certifying
that this has been done. Please note that it is illegal to
ship or transport any hazardous chemicals without United
States Environmental Protection Agency Licensing.
Troubleshooting
Symptom
The pump does not draw water.
The liquid flow is irregular.
Output drops and the pump is noisy.
Oil comes out of the discharge port
or oil is a milky color.
Probable Cause(s)
One or more valves are seating
improperly.
Suction line is plugged or
collapsed. Clogged strainer.
The charge in the pulsation
damper is incorrect.
One or more valves are seating
improperly.
Oil level is too low.
One or more diaphragms split.
Corrective Action
Remove valve and check
for debris.
Examine suction line.
Clean strainer.
Check pressure in pulsation
dampener (20% working pressure).
Remove valve and check for
debris. Examine the valve seatings
and clean them.
Add oil to correct level (halfway up
the sight tube).
Remove manifold and heads. Drain
oil and clean crankcase of water.
Replace diaphragms, heads and
manifold. Refill with Hypro Oil
(Part No. 2160-0038).
Diaphragm
Pump Connection
Agitator
Agitation Line
Bypass Line
Pump
Control
Valve
Tank
Shut-off
Pressure
Gauge
Boom Shut-off
or Selector
To Spray Gun
To Boom Nozzles
Relief Valve
L-1381 (Rev. B)