Delavan M125 - Manual (Page 4)

1228 Chestnut Avenue • Minneapolis, MN 55403 Delavan Ag Pumps
Document HD Magnum Install 3.15.06
HD Magnum Series
4
Plumbing Recommendations
Pump Installation Guidelines
1. Mount the pump below the liquid level in the tank to
ease priming. Install a 20 mesh suction filter and tank
shutoff on the pump inlet.
2. The volute casing can be rotated to have the discharge
in any of four positions. The top position is best to aid in
pump priming by eliminating air from the pump.
3. Pump ratings are based on using adequate size hose.
We recommend using hose size that is equal to the port
size or larger. Smaller hose can be used but will affect
the pump performance.
4. Four 1/8” NPT plug vent lines are located on the front of
the pump. Remove the 1/8” NPT plug positioned at the
highest point on the pump. Install a small diameter hose
or tube (typically 1/8”) back to the tank to allow air to be
vented from the pump. This allows the pump to prime
properly and decreases potential pressure fluctuations.
Caution:
Do not run the pump dry! Make sure pump is filled with
liquid when starting. Shut off the pump when the tank is
empty. Running the pump dry will damage the seals!
Motor Installation Guidelines
1. Refer to the Pump/Tractor Selection Guide to determine
the correct installation section to follow.
2. For all models, remove the cap plugs from the motor
ports. When assembling the hydraulic hoses to the
motor, make sure to keep the hydraulic connections
clean. Do not allow paint, dirt or metal particles to fall
into the ports.
3. Make sure the hydraulic quick disconnects are clean
and completely engage when coupled to the tractor
hydraulics.
4. Make sure that the hydraulic connections are to the
correct port. The ports are clearly marked IN and OUT.
Caution:
Do not run the pump at deadhead (pump primed but no
outlet flow) for more than two minutes. Pump seals will
overheat and may be damaged due to heat buildup.
Pressure
Tap *
Pressure
Gauge
Y-Line
Strainer
Electric Boom
Control Valves *
Y-Line
Strainer
Agitation
Line
Control Console *
To Spray
Booms
Centrifugal
Pump
Anti-Vortex
Fitting
Ball Valve
Electric Pressure
Regulator Valve *
Tank
Agitator
*Note: An electronic control
console, pressure regulating
valve, boom valves and pressure
gauge feedback loop can be
used use with the HD Magnum
centrifugal pump to make a
complete spray system. To
regulate pressure to the boom,
simply adjust the pressure setting
at the control console. The
pressure gauge feedback loop
indicates the desired spraying
pressure. Open the bypass or
agitation line and set the desired
agitation flow. If the desired
spraying pressure decreases,
adjust the pressure at the control
console as needed.