Priming and operation, Power connection, Electrical power surge protection – Davey HP, HS & HM Pressure Systems with Presscontrol User Manual

Page 5

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Priming and Operation

The Presscontrol module fitted to your system is provided with a push button

“Prime” button. This button is used during initial priming of the pump and also acts

as a reset button if the Presscontrol switches out in pump protection mode.

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.

3. Ensure all valves in suction line are open.

4. Switch on power - The status indicator light will be illuminated

green and the pump will run. A full flow of water should be

discharged from the open tap.

5. If the pump stops with the tap open see troubleshooting checklist.

6. Close the open outlet or tap and the pump should stop after a few seconds (the

status indicator light should be illuminated red (constant). If not, consult the

troubleshooting checklist.

To Reset if Pump switches out in Pump Protection Mode

1. Make sure pump is primed.

2. Open tap, push prime button.

3. Close tap and pump will stop.

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.

Electrical Power Surge Protection

An electrical power surge or spike can travel on the supply lines and cause

serious damage to your electrical equipment. The Presscontrol fitted to this pump

has a metal oxide varistor (MOV) fitted to help protect it’s circuit. This MOV is

a “sacrificial” device, meaning that it effectively is gradually damaged every time

it takes a surge. The MOV is not a lightning arrestor and may not protect the

Presscontrol if lightning or a very powerful surge hits the pump unit.

If the installation is subject to electrical power surges or lightning we strongly

recommend the use of suitable additional surge protection devices on ALL electrical

equipment.

The Presscontrol fitted to this pump has a status indicator light mounted

on its front panel. This light will be illuminated whenever the Presscontrol

senses that there is electrical power available. The light will only work

when unit is connected to the correct electrical supply.

The electrical connections and checks must be made by a qualified

electrician and comply with applicable local standards.

NOTE: For protection, the Davey pump motors are fitted with an automatic

reset thermal overload, constant tripping of this overload indicates a

problem e.g. low voltage at pump, excessive temperature (above 50°C) in

pump enclosure.

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