salmson LRL Serie Manual De Instalación Y Puesta En Servicio página 39

r 2,5 · (d · 2s)
5 x DN
Fig. 11: Settling section before and after
the pump
Installation and operating instructions LRL, JRL
CAUTION! Risk of material damage!
Danger of damage due to incorrect handling.
• Only use lifting eyes on the motor for carrying the weight of the
motor and not for carrying the entire pump.
• Only lift the pump using permitted load-bearing equipment
(see chapter 3 "Transport and interim storage" on page 26).
• Minimum distance between a wall and the fan guard of the motor:
15 cm.
• The suction and pressure flange are both marked with a cast arrow to
indicate the flow direction. The direction of flow must correspond to
the direction arrows on the flanges.
• Shut-off devices must be installed without fail in front of and behind
the pump in order to avoid the entire system being drained when the
pump is inspected or exchanged.
If there is a danger of return flow, a non-return valve must be used.
NOTE
A settling section must be provided before and after the pump, in the
form of a straight pipe. The length of this settling section should be at
least 5 x DN of the pump flange (Fig. 11). This measure serves to avoid
flow cavitation.
• The piping and pump must be free of mechanical stress when
installed. The pipes must be fixed in such a way that the pump is not
supporting the weight of the pipes.
• The bleed valve (Fig. 1/2/3, Item 9) must always face upwards.
• The lantern has an opening on the underside which allows a drain pipe
for condensation water to be connected.
• All installation positions except for "motor facing down" are allowed.
NOTE
The motor terminal box must not face downward. If necessary, the
motor or motor impeller unit can be rotated once the hexagon head
bolts have been loosened. While rotating the motor or motor impeller
unit, ensure that the housing O-ring seal does not become damaged.
NOTE
When pumping out of a tank, ensure that the liquid level is always
high enough above the suction port of the pump so that the pump
never runs dry. The minimum intake pressure must be observed.
NOTE
In the case of insulated systems, only the pump housing may be insu-
lated, not the lantern and motor.
The motors are each equipped with condensation water holes, which
are sealed with a plug at the factory (to ensure protection class IP 55).
In the event of an accumulation of condensation water, e.g. when
used in air-conditioning/cooling systems, this plug must be removed
downwards so that condensation water can drain.
English
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