Davey HM Series Bedienungsanleitung

Please pass these instructions on to the operator of this equipment.

HM Series

Electric Pumps

Installation and

Operating Instructions

WARNING: Failure to follow these instructions and comply with all applicable

codes may cause serious bodily injury and/or property damage.

WARNING: The pump and associated pipework operate under pressure.

Under no circumstances should the pump or associated pipework be

disassembled unless the internal pressure of the unit has been relieved.

Failure to observe this warning will expose persons to the possibility of

personal injury and may also result in damage to the pump, pipework or

other property.

IMPORTANT - outside Australia & New Zealand

Only a locally acceptable plug can be used for this product (Please

use certied plugs only in compliance with your local regulations).

The installation can be only performed by a licensed/ registered

electrical installer.

Please connect certied plug onto power cable in compliance with local

regulations: Active (Brown) Neutral (Blue) and Earth (Green/yellow)

Prior to using this pump you must ensure that:

• The pump is installed in a safe and dry environment

• The pump enclosure has adequate drainage in the event of leakage

• Any transport plugs are removed

• The pipe-work is correctly sealed and supported

• The pump is primed correctly

• The power supply is correctly connected

• All steps have been taken for safe operation

Appropriate details for all of these items are contained in the following Installation

and Operating Instructions. Read these in their entirety before switching on this

pump. If you are uncertain as to any of these Installation and Operating Instructions

please contact your Davey dealer or the appropriate Davey ofce as listed on the

back of this document.

Congratulations on your purchase of a high quality, Davey multistage pump.

All components have been designed and manufactured to give trouble free,

reliable operation.

Before installing your new pump, please read all instructions carefully as failures

caused by incorrect installation or operation are not covered by the guarantee. Your

HM Electric Pump is designed to handle clean water. The pump should not be used

for any other purpose without specic referral to Davey. The use of the pump to

pump ammable, corrosive and other materials of a hazardous nature is specically

excluded.

General

Applications

Pumps for clear liquids, free of abrasives in residential, agricultural, industrial, and

other applications.

1. Priming Plug

2. Discharge Outlet

3. Suction Inlet

4. Pump Body

5. Motor

Specications

Liquid temperate range: -15 to +105oC

Suction head: depends on NPSH of pump

Choosing a Site

Choose a site with a rm base as close to the water

source as possible with correct power supply. Make sure

your pump is always connected to an adequate, reliable

source of clean water.

Housing your Davey Pump

To protect your pump from the weather, make

sure the pump house is both water proof, frost

free and has adequate ventilation.

The pump should be mounted on a rm base

allowing for drainage, to avoid damage to

ooring etc., that over time may occur from

leaking pipe joints or pump seals. Do not mount

the pump vertically. Never place ammable

materials on or near your pump.

Power Connection

The electrical connections and checks must be made by a qualied

electrician and comply with applicable local standards. Poor installation or

poor power supply may even result in electrical res!

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.

NOTE:

1. Ensure motor is connected to power supply specied on nameplate.

2. Avoid long extension leads as they can cause substantial voltage drop

and operating problems.

3. Although the Davey electric motor is specically engineered to perform

on a range of power supply voltages, malfunctions or failure caused by

adverse voltage supply conditions are not covered under guarantee.

In accordance with AS/NZ 60335.2.41 we are obliged to inform you that this

pump is not to be used by children or inrm persons and must not be used

as a toy by children.

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.

Note: 1. Long extension leads should be avoided as they often have insufcient

current carrying capacity to run electric motors, hence they can cause

substantial voltage drop and operating problems.

2. If the electrical ttings in your country make it necessary to remove the

plug from the lead xed 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

Some HM models are also available as 3 phase

model for 50Hz, nominal 380-415V power supply.

A recommended wiring diagram can be found inside the

capacitor cover (see gure one below). Three phase

units must be wired in by an authorised electrician in

conjunction with a contactor which has “quicktrip” (M10)

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.

Three phase models with output power of

below 1.4kW have been designed to provide

cable entry on the right hand side when viewed

from the non-drive or fan end of the motor.

A terminal block is provided under the capacitor

cover. Note: Three phase motors do not have

capacitors tted in the capacitor cover.

Depending on the motor, access to the terminal block is achieved by either removal

of the fan cowl, or removal of the terminal cover. Before prising the fan cowl ensure

the retaining screw has been removed.

IMPORTANT NOTE: THREE PHASE MODELS ONLY

Before nalising wiring connections, check that motor rotates in direction of

arrow (clockwise when shaft is viewed from wiring connection end except

HM270 models which rotate anti-clockwise). To alter rotation, change any two

power leads at motor terminals.

When the unit is connected and operating the phase balance should be checked.

This should be within 5% variation. “Rolling” the leads may help to improve a small

unbalance, but major phase unbalance will usually be attributed to an input power

unbalance. This must be addressed before the pump is used.

Power connections and wiring must be carried out by an Authorised

Electrician. Means of disconnection must be incorporated in the xed wiring,

in accordance with local wiring rules.

WARNING: Some insects, such as small ants, nd electrical devices

attractive for various reasons. If your pump enclosure is susceptible to

insect infestation you should implement a suitable pest control plan.

Pipe Connections

For best performance use PVC or polythene pipe at least the same diameter as

the pump’s inlet. Larger diameter pipe may be used to minimise resistance to ow

when pumping longer

distances.

Use unions at pipe

connections to enable easy

removal and servicing. Use

sufcient tape to ensure

airtight seal and hand

tighten only, do not screw connections all the way into suction port. To prevent strain on

pump thread always support heavy inlet and outlet pipes. Lay suction pipe at a constant

gradient to avoid air pockets which may reduce pump efciency.

NEW Improved HM with self-priming and air handling capability

Your new HM pump or pressure system has the benet of a new upgraded self-

priming and air handling capability.

While Davey must stress the overall requirement for all suction lines to be air tight,

we also are aware that sometimes removing air from suction lines or stopping minor

leaks can be difcult. For this reason Davey have incorporated special features into

your new pump or pressure system to make operation easier and more dependable.

To help you get the most from this new capability please read this addendum in

conjunction with the full Installation and Operating Manual included with your pump.

Plumbing:

Pay special attention to ensuring the suction pipe and associated ttings are airtight.

The absence of a water leak on the suction line may not conrm that the pipe or

ttings are airtight.

In the event that the suction line contains air pockets it can aid the priming process

greatly if you have the ability to temporarily isolate the discharge line from the pump

and instead use an adjacent tap to allow the pump to discharge water until full prime

is established. Such a facility is also useful for future servicing and troubleshooting

should it be required.

Priming:

Filling the pump and suction line with water is made much easier by lling from

the outlet side and allowing any trapped air in the pump to evacuate via one of the

plugged holes on the pump casing.

DO NOT USE THREAD SEALING COMPOUNDS, HEMP OR PIPE DOPE!

NOTE: Suction leaks are the largest

cause of poor pump performance

and are difcult to detect. Ensure all

connections are completely sealed using

thread tape only. DO NOT USE SEALING

COMPOUNDS OR PIPE DOPE.

• To do this with Torrium2 equipped models, temporarily remove the inbuilt check

valve poppet from the Torrium2 and unscrew the SS plug from the casing besides

the outlet.

• For pressure switch controlled models simply prime through the outlet tee with the

plug removed. Remember that pressure switch controlled units require an inlet

checkvalve or footvalve to be used.

• For manual pumps the provision of a priming tee on the outlet can make this

task much easier. For temporary or permanent installation of manual pumps we

strongly recommend the addition of an inlet checkvalve or footvalve as well.

Replace all plugs and the inbuilt check valve poppet in the Torrium2 prior to

connecting power and switching on the pump.

Open the adjacent tap part way and isolate the downstream pipework until

a good strong ow is established. This would indicate you have successfully

“primed” the pump.

Close the adjacent tap and open the valve to the downstream pipelines.

Your pump is now ready for normal operation.

Connection to your Water Source

ABOVE GROUND WATER SOURCES

Installations with ooded suction require a

gate valve so water supply can be turned off

for pump removal and servicing.

Install a one-way check valve in

the suction pipeline to avoid water

draining back past the pump while

not in operation and causing possible

pump damage.

BELOW GROUND WATER SOURCES

NOTE: HM models require a foot valve or check valve to be installed in the

suction pipework in suction lift applications as appropriate.

Whenever the installation position of the pump is higher than the lowest water

level, a foot valve tted to the end of the suction pipe as illustrated in (A) below is

required. Ensure that the foot valve is at least 1/2metre below minimum water level.

MAINS WATER

Flow

Over 1m

0.5m

Min

Foot Valve

(Not Supplied)

Flow

Check Valve

Figure A Figure B

Spear Size Mesh Approx. Max. Capacity of Spear Point

11/4” (32mm) 60 15 - 23 l/min or 200 - 300 gal/hr

11/2” (38mm) 60 23 - 38 l/min or 300 - 500 gal/hr

2” (50mm) 60 38 - 75 l/min or 500 - 1000 gal/hr

NOTE: Be certain to select the spear point to suit the well conditions and

regulate the ow rate from the pump accordingly.

NOTE: DO NOT install the check valve at the pump or at the top of the

well. DO NOT run the pump without water.

SPEAR POINT INSTALLATIONS

When an HM is installed on a spear or well point a check valve tted

immediately on top of the spear point itself, as shown in (B) above.

Dry-running protection

To avoid accidental loss of prime of the pump, we recommend protecting it with a

suitable device. Note: damage from dry-running is not covered by guarantee.

Connection of Mains Scheme or Town Water Supply to either Suction or

Discharge of Pumps

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.

MAINS WATER

Priming and Operation

The pump body and suction line should be lled by pouring water into the priming

plug hole adjacent to the outlet. Screw on the priming plug, close the discharge

valve two thirds and switch pump on. Gradually open the discharge valve and the

pipeline lls.

In high suction lift conditions, the pump may make a noise similar to it pumping sand

or gravel; this will usually be cavitation occurring. Reduce ow until the cavitation

noise stops. Once the discharge pipeline lls you can open the valve. If the

cavitation noise returns, close the discharge valve slightly until it stops.

In the case of installations where there is a positive suction pressure (ooded

suction) remove the pump’s priming plug and slowly open the gate valve in the

suction piping to allow water to enter the pump from the suction line until all air is

expelled. Replace the priming plug and fully open the gate valve in the suction line

and switch the pump on.

Prime should be established almost immediately, however, it may be necessary to

re-prime several times on some installations before fully established optimum pump

performance is obtained.

If pump runs but will not pump water, check for the following:

1. Suction line and pump body not lled with water.

2. Leaking foot valve.

3. Air leaks in suction lines.

4. Air trapped in suction line (even on ooded suction) possibly when there is an

uneven rise in the piping from water to pump (eliminate “humps and hollows”)

3. Switch on.

4. Prime should establish almost

immediately with a strong

ow of water, however, in

some installations it may

be necessary to repeat

the above operation to

remove all air from the

system.

1. Ensure outlet nearest to

pump is open.

2. Fill pump body and suction line

through priming plug hole located

above suction inlet and replace plug.

Do not run pump dry or allow to run continuously in a loss of prime

condition. If this pump is allowed to pump water containing sand or other

abrasive material, the effective life of the pump will be shortened.

Trouble Shooting Check List

MOTOR OPERATING BUT NOT PUMPING

1. Suction line and pump body not lled with water.

2. Leaking foot valve.

3. Air leaks in suction lines or suction pipe not under water.

4. Air trapped in suction lines (also possible with ooded suction)

due to uneven rise in piping (eliminate humps and hollows).

5. No water at source or water level too low.

6. Valve on suction or delivery lines closed.

MOTOR NOT RUNNING

1. Power not connected.

2. Supply voltage too low.

3. Overload tripped.

4. Motor not free to turn e.g. a blocked impeller.

5. Internal motor fault.

MOTOR RUNS FOR SOME TIME THEN STOPS - RESTARTS AUTOMATICALLY

AFTER SHORT TIME

Overload tripping in motor - low voltage at motor terminals

- motor in direct sunshine or in “hot box”

- motor not free to turn (eg: blocked)

WARNING:

DO NOT RUN DRY.

DO NOT RUN WITH LOSS OF PRIME.

DO NOT PUMP WATER CONTAINING ABRASIVE MATERIALS.

*NOTE “MOTOR PROTECTION DEVICE” :

For protection, the Davey pump motor is tted with an automatic reset

thermal overload, constant tripping of this overload indicates a problem

e.g. low voltage at pump, excessive temperature in pump enclosure.

WARNING: When servicing or attending pump, always ensure power is

switched off and lead unplugged. Electrical connections should be serviced

only by qualied persons.

WARNING: Do not use hydrocarbon based or hydrocarbon propelled

sprays around the electrical components of this pump.

Care should also be taken when servicing or disassembling pump to avoid

possible injury from hot 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.

IMPORTANT:

DO NOT USE petroleum based uids or solvents (e.g. Oils, Kerosene,

Turpentine, Thinners, etc) on the plastic pump components or seal

components.

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