Davey D120GA Submersible Single Phase Grinder Pump
WHY CHOOSE THE Davey Submersible Grinder Pumps?
PUMP
Heavy duty shredding and grinding ring at inlet.
Centrifugal design, open impeller.
Double Mechanical shaft seal in oil bath.
Hard faced Silicon Carbide/Ceramic seal on pump side.
Sand slinger lip seal for added protection.
Oring casing sealing.
Corrosive resistant stainless steel and quality heavy duty
powder coated cast iron pump parts.
Weight: 31Kg
Dimensions (mm): 300L x 340W x 530H
APPLICATIONS
• Grey and black water pumping
• Sump emptying
• Septic effluent and sewage disposal
• Pumping of waste water with soft solids in suspension
MOTOR
2 pole, 2900rpm 50Hz 240V single phase or 415V three phase.
Submersible with IPx8 enclosure.
Class F insulation.
10 metre HO7RN-F oil resistant power lead and seal sensor
lead fitted with bared wire lead ends for easy connection to
power supply terminations.
Seal sensor leads fitted for easy connection to a protection
relay to enable timely repairs prior to motor damage.
Protected against both high operating temperatures and high
current by a built in automatically resetting thermal overload.
BENEFITS
•Able to pump soft organic solids, sanitary products, thin
rubber products and even some textiles in suspension, by
shredding to a slurry
•Open impeller prevents blockage of the pump by small solids
in the slurry
• High heads and small solids allow connection to small
discharge pipe systems, especially suited to pumping waste
water to pressure sewer mains
•Silent operation
•Quick and easy installation
• Hose tail supplied with every pump
• Low maintenance
• Fully repairable
• Mounting feet with rubber cushions fitted for a firm and
stable positioning during installation and operation for D75G/
GA, DT08G, D120G/A, D150G/A, DT12G & DT15G.
•Adaptable to slide rails
OPERATING LIMITS
Capacities to: 290 lpm
Maximum total head: 38m
Maximum submergence: 20m
Maximum pumped water temperature: 40ºC
ELECTRICAL DATA
Electrical lead: 10m
Phase: Single
Volts: 220-240
kW (nameplate): 1.20
Amps – FL: 10.00
Insulation: F class
SUITABLE FLUIDS
Sewage or “Grey Water” of neutral pH containing up to 20% soft organic
solids (some wear should be expected while pumping hard solids in
suspension).
MATERIALS OF CONSTRUCTION
Impeller : Cast iron – FCD 400
Shredding ring : High Chromium steel
Grinding ring : High Chromium steel
Pump casing : Cast iron – FCD 400
Outlet : Cast iron – FC200
Shaft seal – pump side – Silicon carbide / ceramic
Shaft seal – pump side – Carbon / ceramic. Mechanical seals in captive oil bath and oil seal.
Shaft seal elastomer : Nitrile rubber
Pump shaft : 304 stainless steel
O-rings : Nitrile rubber
Motor shell : 304 stainless steel
Fasteners : 304 stainless steel
Float and power supply leads : HO7RN-F oil resistant
INSTALLATION & PRIMING
Use a rope to position and retrieve the pump. Do not lower or retrieve the
pump using the power lead as this may damage the cable entry seals, causing
water leaks and unsafe operation.
Do not use this product for recirculating or filtering swimming pools, spas, etc.
While these pumps are built to high safety standards, they are not approved
for installations where people will be in the water while they are operating.
Do not pump abrasive materials. Sand and grit in the water being pumped
will accelerate wear, causing shortened pump life.
Make room for the float switch to operate. Automatic models have a float
switch to turn them on when the water level rises and turn them off again when
it has been pumped down to the safe operating level of the pump. If the float
switch is not free to rise and fall, correct pump operation may not be possible.
Don’t run your pump dry. Non-automatic models must be switched off
manually or by way of an external float/level switch when the water level is
reduced to the top of the pump housing.
