Davey 2PP65H Poly Pump 600LT/min, 40m Lift (196CC Engine)

ENGINE DATA
Engine brand: Honda
Engine model: GX200
Engine type: Overhead valve
Displacement: 196 cc
Fuel tank: 3.6 litres
Oil capacity: 0.6 litres
Compression ratio: 8.5 : 1
Air filter type: Dual stage – foam prefilter with paper element final filter
Spark arrester: Yes
Approximate fuel consumption: @ full load @ 3600rpm: 2.05 l/hr
Noise: @ 4m @ full 3600 rpm @ full head: 86 dBa

Handling
This pump is light weight (22Kg dry weight) and comes with a carry handle for
easy portability.

Installation
Pump Location

• For the most efficient operation, site the pump as close to the water as practical.
  It is essential for the correct function of the engine that it be located on a
  horizontal surface. If allowed to run at an inclination, the oil lubrication system of
  the engine may not operate correctly. Subsequent engine failure would not be
  covered by the manufacturer’s guarantee.
• The pumps should be positioned in a well-drained location to avoid possible
  property damage by leaking hose fittings or pump seals, spilled engine fuel, etc.
• If you intend to operate your pump on a hard surface, Davey suggest a suitable
  resilient mounting to be fitted to your pump and engine.

Suction Piping
A reinforced or non-collapsible hose should be used for the pump suction. The
minimum suction pipe size should be 50mm (2”) I.D. A strainer should always be
fitted to the bottom of the suction pipe. The strainer should be kept out of sand,
mud, etc., to avoid particles being drawn into the pump and causing damage by
abrasion.

Always locate the pump so that the rise of suction pipe from the water is even with
no humps or hollows where air may be trapped.
All pipe connections must be air tight to ensure the best priming and operation of
the pump. Check that the washers in nuts and tails are in good order.
Discharge Piping
Care should be taken on correct selection of discharge pipe pressure rating as the 2”
Poly Pump is capable of delivering pressures up to 280kPa (41psi). The pump outlet
is 2” BSP female and 2”, or larger, polythene piping or equivalent should be used.

Pump Operation

Priming the Pump

• Do not attempt to run pump if the pump casing (pump body) has not been filled with water (primed). Severe damage will result to
  mechanical seal.
• To prime the pump initially, it is necessary to fill the pump body with
  water before starting the engine. Remove the priming cap (on top of
  the pump casing near the discharge port). Fill the pump body with
  water and refit the priming cap tightly.

Starting the Pump
Choke and start the engine, open the discharge valve and then allow the pump to
run until it is drawing water. The pump will establish prime better at higher engine
speeds. Allow up to 3 minutes for long or deep suctions lifts.

High performance can be obtained from these pump if the engine speed is
increased, however, we do not recommend the pump be operated over 3,600rpm
for extended periods as this may overload the engine. Operating the engine
at full throttle for extended periods will shorten the engine’s life and may result
in premature failure. For operations such as irrigation or dam and tank filling,
the throttle should be closed to around ¾ maximum. This should correspond to
around 3,000rpm maximum.

Pumping Other Than Clear Water
When pumping other than clean water, the specific gravity or relative weight of
the fluid may be different to water. If the fluid being pumped is heavier than water,
such as pumping liquid fertilizers, then the load on the pump will be increased. In
these cases care should be taken to ensure the engine is operated at lower flows
to relieve the load. This can be achieved by partially closing an outlet valve.
Avoiding Pump Damage

• Pumping water containing sand, dirt or other abrasive materials will result in
  accelerated pump wear and mechanical seal failure. Damage of this kind is not
  covered by the guarantee.
• Never operate the pump against closed head or with no discharge flow as this
  will lead to damage to the pump not covered by the guarantee. If the pump is
  required to operate at no flow then a bypass line should be used to return flow to
  the source or to waste.
• This pump is not designed to boost high incoming pressure and should not be
  connected to mains or other pressuring water supplies as this may result in
  discharge pressures above the rated casing pressure capacity. Damage to the
  pump from such over pressurisation is not covered by the guarantee.

Storage of Pump
The pump should be drained of water or chemicals and normal engine storage
procedure should be followed. Run the pump until the fuel is exhausted; drain
the fill the sump with fresh oil. The pump should be stored in a dry place. Before
starting the pump after storage it should be checked to make sure that it is free to
rotate by pulling the starter rope with the ignition off.