Stairs SP Series Installation And Operating Instructions Manual

Borehole Submersible Pumps

Installation and Operating Instructions

CAUTION

NOTE

CAUTION

SP Borehole Submersible Pumps

These instructions apply to STAIRS submersible pumps, type SP. Read these instructions carefully before beginning installation

1. Delivery and storage

1.1 Delivery

STAIRS submersible pumps are supplied from the factory in proper packing in which they should remain until they are to be installed.
During unpacking and prior to installation, care must be taken when handling the pump to ensure that misalignment does not occur due to bending.

The pumps should remain in the packing until th

The loose data plate supplied with the pump should be fixed close to the installation site.

The pump should not be exposed to unnecessary impact and shocks.

ey are placed in vertical position during installation.

1.2 Storage and handling

Storage temperature

Pump: –20 °C to +60 °C.
Motor: –20 °C to +70 °C.
The pump should not be exposed to direct sunlight. If the pump has been unpacked, it should be stored horizontally, adequately supported, or vertically to
prevent misalig

nment of the pump. Make sure that the pump cannot roll or fall over. Duringstorage, the pump can be supported as shown in fig. 1.

Fig. 1 Pump position during storage

1.2.1 Frost protection

If the pump has to be stored after use, it must be stored on a frost-free location, or it must be ensured that the motor liquid is frost-proof.

2. General data

2.1 Applications

STAIRS SP submersible pumps are designed for a wide range of water supply and liquid transfer applications, such as the supply of fresh water to private
homes or waterworks, water supply to

The pump must be installed so that the suction interconnector is completely submerged in the liquid. The pump can be installed either horizontally or vertically.

nursery gardens or farms, drawdown of groundwater and pressure boosting, and various industrial jobs.

2.2 Pumped liquids

Clean, thin, non-explosive liquids without solid particles or fibres. The maximum sand content of the water must not exceed 50 g/m3. A larger sand content

ll reduce the life of the pump and increase the risk of blocking.

wi

When pumping liquids with a density h

igher than that of water, motors with correspondingly higher out puts must be used.

3. Preparation

3.1 Maximum liquid temperature

Out of consideration for the rubber parts in pump and motor, the liquid te
temperatures between 40 °C and 60 °C (~105 °F and 140 °F) provided tha

Warning
Before starting work on the pump, make sure that the electricity supply has been switched off and that it cannot be accidentally switched
on.

mperature must not exceed 40 °C (~105 °F). The pump can operate at liquid

t all rubber parts are replaced every third year.

3