Davey 165S SHALLOW WELL PRESSURE PUMPS & SYSTEMS - Manual (Page 3)

Minimum suction pipe diameter recommended
suction length up to 10m up to 30m
Model Metric Imperial Metric Imperial
95S 40mm 1 1 /
4
” 50mm 1 1 /
2
”
125S 40mm 1 1 /
4
” 50mm 1 1 /
2
”
165S 50mm 1 1 /
2
” 63mm 2”
Delivery Piping
Polythene piping which complies with the relevant Australian standard is recommended. Select the grade of pipe which has
a pressure rating suitable for your application. Galvanised or PVC piping may also be used provided the pressure rating is
adequate.
The pressure delivered by your Pressure Pump is reduced by the static delivery head (vertical height from pump to outlet
point) plus the friction loss caused by the piping itself. Static delivery head reduces the available pressure from the pump
by approximately 10kPa (1.4 psi) for every 1m (3.3 ft.) of head. The reduction in pressure due to pipe friction varies with the
length, diameter and type of piping used, as well as the flow rate through the pipe. The larger the diameter pipe, the smaller the
pressure drop by pipe friction.
The following pipe sizes are recommended for lengths up to 100m (330 ft.)
Minimum discharge pipe diameter recommended
Delivery Length Up to 5m Up to 30m Up to 100m
Model Metric Imperial Metric Imperial Metric Imperial
95S 32mm 1” 40mm 1 1 /
4
” 50mm 1 1 /
2
”
125S 32mm 1” 40mm 1 1 /
4
” 50mm 1 1 /
2
”
165S 40mm 1 1 /
4
” 50mm 1 1 /
2
” 63mm 2”
For more accurate information please contact your local Davey Dealer or the Davey Customer Service Centre.
power connection
single phase
A power connection point should be provided by a qualified electrician within the pump housing.
Single phase Models are rated for 220/250 volts, 50 Hz operation, and may be connected to a standard 10 amp power outlet.
All single phase Models have automatic re-set thermal overload protection built in, i.e. should overload on motor cause thermal
to open circuit and switch motor off, it will automatically re-set and switch motor on when motor has cooled down sufficiently,
usually within a few minutes.
Note: 1. Long extension leads should be avoided as they often have insufficient current carrying capacity to run electric
motors, hence they can cause substantial voltage drop and operating problems.
2. Minimum voltage at the electric motor must not fall below 216.
3. If the electrical fittings in your country make it necessary to remove the plug from the lead fixed to the motor care
should be taken to ensure that the earth conductor green/yellow in the lead is properly connected to a good earth.
This work must only be undertaken by an authorised electrician.
three phase
Model 165S only is also available as 3 phase model for 50Hz, nominal 415volt power supply. A recommended wiring diagram
can be found inside the capacitor cover (see figure one below). Three phase units must be wired in by an authorised electrician
in conjunction with a contactor which has “quicktrip” overloads set at nameplate current.
Davey recommend the use of overloads which also have the ability to detect “single phasing” or “dropped phase” conditions in
the power supply.
WarnIng:
Automatic reset thermal overloads will allow the pump to restart without warning. ALWAYS disconnect the
pump motor from the electrical supply before maintenance or repairs.
power connections and wiring must be carried out by an authorised electrician, in compliance with
applicable local standards.
The electrical connections and checks must be made by a qualified electrician and comply with applicable
local standards.
- 3 -
In accordance with as 3350.2.41 we are obliged to inform you that this pump is not to be used by children
or infirm persons and must not be used as a toy by children.