Davey HM Series Pressure Systems with Pressure Switch - Manual (Page 3)

10 3
Pressure Switch Setting and Tank Precharge
Your Davey HM Series Pressure Pump should have the correct pressure
switch settings for zero suction lift. If your pump is installed with a suction
lift you may need to have the cut out switch settings adjusted. The
pressure tank(s) fitted must be air pre-charged as per the table in the
maintenance section of these instructions.
Choosing a Site
Choose a site with a firm base and as close to the water source as
possible with correct power supply. Make sure your pressure system is
always connected to an adequate, reliable source of clean water.
Housing your Davey Pressure System
To protect your pressure system from the
weather, make sure the pump house is both
water proof, frost free and has adequate
ventilation. The pump should be horizontally
mounted on a firm base allowing for drainage,
to avoid damage to flooring etc., that over time
may occur from leaking pipe joints or pump seals.
Do not mount the pump vertically. Never place
flammable materials on or near your pump.
Power Connection
Connect lead to power supply designated on pump label. Do not use
long extension leads as they cause substantial voltage drop, poor pump
performance and may cause motor overload.
WARNING: Some insects, such as small ants, find electrical devices
attractive for various reasons. If your pump enclosure is susceptible to
insect infestation you should implement a suitable pest control plan.
The electrical connections and checks must be made by a qualified
electrician and comply with applicable local standards. Poor installation
or poor power supply may even result in electrical fires!
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.
Care should also be taken when servicing or disassembling pump to avoid
possible injury from pressurised water. Unplug pump, relieve pressure by
opening a tap on the discharge side of the pump and allow any hot water in
the pump to cool before attempting to dismantle.
During servicing, use only approved, non-petrochemical based oring and
gasket lubrication. If unsure, consult your Davey Dealer for advice.
WARNING: Do not use hydrocarbon based or hydrocarbon propelled
sprays around the electrical components of this pump.
NOTE: For protection, the Davey ® pump motor is fitted with an automatic
“over temperature” cut-out. Constant tripping of this overload device
indicates a problem e.g. low voltage at pump, excessive ambient
temperature (above 50°C) in pump enclosure.
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.
WARNING: Do not use hydrocarbon based or hydrocarbon propelled sprays
around the electrical components of this pump.
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.