Installation; Installation Site; Installation Surface; Ventilation And Aeration - Speck-Pumpen IN-VB Originalbetriebsanleitung

5

Installation

5.1

Installation site

5.1.1

Installation surface

 The installation surface must be level and horizontal in order to avoid damage.
 Observe weight indications!
5.1.2

Ventilation and aeration

 Ensure sufficient ventilation and aeration. The ventilation and aeration must ensure the following
conditions:
– Prevention of condensation.
– Cooling of the pump motor and other system components, for example switch cabinets and
control units.
– Limitation of the ambient temperature to maximum 40 °C.
5.1.3

Structure-borne and airborne noise transmission

 Observe regulations for structural noise protection, for example DIN 4109.
 Install the pump in a manner which reduces structure-borne and airborne noise transmission.
Vibration-absorbing materials are suitable bases. Examples:
– Anti-vibration buffers
– Cork lining
– Sufficiently hard foam
5.1.4

Reserve space

 Measure the reserve space so that the motor unit can be removed in the direction of the motor fan
with the help of lifting equipment.
5.1.5

Fasteners

 Fasten pump using screws.
5.1.6

Bypass

 Install a bypass if the pump works against a closed valve. The capacity amounts to minimum 15 % of
the maximum volume flow. See "Fig. 1" on page 11
5.2

Pipes

5.2.1

Pipe sizing

Suction lines which are too long have significant disadvantages:
• Higher resistance which results in reduced suction performance and a higher risk of cavitation.
A minimum length of ten times the inner diameter of the suction flange must be planned for the calming
section in front of the suction flange.
For longer pipes, losses due to pipe friction must be taken into account.
 The nominal diameter of the pipe must be planned according to the pump connections.
 Do not exceed maximum flow speeds.
– Suction line: 1.5 m/s
– Pressure line: 2.0 m/s
5.2.2

Laying pipework

 Keep the suction and pressure lines as short and straight as possible.
Avoid sudden changes to the cross-section and direction.

 Lay the suction line below water level where possible.
 Lay the suction line as follows to prevent air pockets from forming:
– For intake mode: continuously falling.
– For suction operation mode: continuously rising.
 Depending on the type of pump and system, install a non-return valve as necessary.
 Install a shut-off valve in both the suction and pressure lines.
 Avoid valves which close suddenly. Install a shock absorber or air vessel if necessary.
11|2018
Installation
EN 17