Davey HM Series Pressure Systems with Pressure Switch - Manual (Page 6)

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Connection of Mains Scheme or Town Water
Supply to either Suction or Discharge of Pumps &
Pressure Systems
Most Water Supply Authorities have strict regulations regarding direct
connection of pumps to mains water supplies. In most cases an isolating
tank is required between mains supply and pump. Davey also recommend
this method. Directly applied mains pressure can exceed pump operating
pressure and damage pump.
Davey Water Products Pty Ltd can not accept responsibility for loss or
damage resulting from incorrect or unauthorised installations.
Priming and Operation
1. Remove priming plug and fill casing and
suction line (on flooded suction, simply
open gate valve to pump). When full,
replace priming plug.
2. Ensure outlet nearest to pump is open.
MAINS
WA
TE
R
WARNING: When servicing or attending pump, always ensure power
is switched off and lead unplugged. Electrical connections should be
serviced only by qualified persons. If the electrical supply lead of this
pressure system is damaged, it must be replaced.
3. Ensure all valves in suction line are open and plug into electrical supply.
4. Switch on power and the pump will run. A full flow of
water should be discharged from the open tap. Allow
water to flow for 10-20 seconds, or at least until all air has
been expelled from the pump and then close the outlet.
5. If the pump stops pumping (no water flow), with the tap
open, stop the pump and repeat from Step 1 onwards.
If the pump motor stops with the tap open see troubleshooting checklist.
6. Close the open outlet or tap and the pump should stop after a few
seconds. If not, stop the pump and repeat from Step 1 onwards or
consult the troubleshooting checklist.