Priming and operation – Davey HM Series Pressure Systems with Pressure Switch User 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.

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