Elmo Rietschle L-BV5 Operating instructions - Manual (Page 20)

Commissioning
610.44440.40.000 20 / 32 © Gardner Denver Deutschland GmbH
 Take measures to ensure that the unit
CANNOT be operated with the shut-off device
closed.
 Measure the motor insulation resistance.
At values ≤ 1kΩ / Volt of measurement poten-
tial, dry the windings.
 Check the piping / hose connections for leaks.
6.2 Start-up of unit with operating-liquid
supply
Filling up with operating-liquid
For operation with supply of the operating-liquid,
now fill the unit's operating chamber with operat-
ing-liquid.
 For automatically controlled operation:
the shut-off valve in the bypass line (item 5,
Fig. 8, page 17) is to be opened for approx.
20 s.
 For non-automatic control of operation:
the shut-off valve (item 5, Fig. 9, page 17) is
to be opened for approx. 20 s.
Setting the initial pressure of the operating-
liquid
 The initial pressure, p
A
in operating-liquid
supply line (item B, Fig. 11, page20) is to be
set at approx. 1 bar [14.5 psi] above the suc-
tion pressure, p
B
in the suction line (item A,
Fig. 11, page20).
B
A
pB = pA + 1 bar
pB = pA + 14.5 psi
610.44440.99.B14
A Suction line
B Operating-liquid supply line
Fig. 13: Adjusting the operating-liquid flow-rate:
setting the initial pressure
Further steps at start-up are identical to the pro-
cedures during operation.
6.3 Start-up of unit with self-suction of op-
erating-liquid
Fill up with operating-liquid
Units with self-suction of operating-liquid are filled
with operating-liquid before completion of the
installation (Filling up with operating-liquid,
page 15.
Further steps at start-up are identical to the pro-
cedures during operation.
6.4 Checking the direction of rotation
 Check the piping / hose connections on the
suction and discharge connections.
 The unit may not run dry!
See the section, "Filling up with operating-
liquid", page 15 and page 20.
 Briefly switch the unit on then off again.
 The intended direction of shaft rotation is
marked by an arrow (item 9 page 3) on the
pump casing.
 Before shutting the unit down compare the
actual direction of rotation of the external fan
with the intended direction of rotation of the
shaft.
 If necessary, reverse the direction of rotation
of the motor.