salmson LRE Serie Instalacion Y Puesta En Servicio página 86

English
Fig. 20: Transporting the motor
r ≈ 2,5 * (d-2s)
5 x DN
Fig. 21: Settling section before and after
the pump
Pumping out of a tank
Condensate draining, insulation
76
DANGER! Risk of fatal injury!
The pump itself and pump parts can be extremely heavy. Falling
parts pose a risk of cuts, crush injuries, bruises or impacts, which
may lead to death.
• Always use suitable lifting equipment and secure parts against falling.
• Never stand underneath a suspended load.
CAUTION! Risk of property 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 (Fig. 20).
• Only lift the pump with approved lifting gear (e.g. block and tackle,
crane, etc.; see chapter 3 "Transport and interim storage" on page 63).
• When installing the pump, an axial minimum wall/roof clearance of
the motor's fan cover of 200 mm + diameter of the fan cover is to be
maintained.
NOTE:
Shut-off devices shall be installed upstream and downstream from
the pump in all cases, in order to avoid having to drain the entire sys-
tem when checking or renewing the pump. A non-return valve shall
be installed on the pressure side of each pump.
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. 21). This measure serves to avoid
flow cavitation.
• The pipes 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 direction of flow must correspond with the direction arrow on the
pump housing flange.
• The air vent valve at the lantern (Fig. 38, Item 1) always has to be
pointed upwards if the motor shaft is horizontal (Fig. 6/38). If the
motor shaft is vertical, any orientation is permitted.
• All installation positions except for "motor facing down" are allowed.
• The electronic module must not face downwards. If required, the
motor can be turned after loosening the hexagon head screws.
NOTE:
After loosening the hexagon head screws, the differential pressure
sensor is attached to the pressure measuring lines only. When turning
the motor housing, make sure that the pressure measuring lines are not
bent or kinked. Furthermore, while rotating the motor housing, it must
be ensured that the housing O-ring seal does not become damaged.
• For the permitted installation positions, see chapter 7.1 "Permitted
installations position and change of the arrangement of components
before the installation" on page 74.
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 inlet pressure must be observed.
• When the pump is used in air-conditioning or cooling systems, the
condensation that forms in the lantern can be drained specifically via
an existing hole. A drain pipe can be connected at this opening. Small
amounts of fluid leakage can be also drained off.
The motors are equipped with holes for condensation which are
sealed with plastic plugs at the factory (in order to guarantee that
protection class IP 55 is achieved).
Salmson 11/2017