Elmo Rietschle L-BV5 Operating instructions - Manual (Page 10)

Technical data
610.44440.40.000 10 / 32 © Gardner Denver Deutschland GmbH
3.2 Electrical data
See motor rating plate.
3.3 Operating conditions normal operation
Temperatures
Temperatures of the gases / vapours
[°C] [°F]
max. +80 max. +176
For higher media temperatures provisions have to
be made in the system to protect against burning,
e.g. fitting of guards.
In this case one of the following provisions can be
made:
 increase of the operating-liquid flow-rate to 2.5
times (2BV2 …) or to 2 times (2BV5 …) the de-
sign operating-liquid flow-rate (cooling circula-
tion)
 installation of a pre-condenser
Temperature of the operating-liquid
[°C] [°F]
max. +80 max. +176
min. +5 min. +41
Nominal value:
+15 +59
Ambient temperature
[°C] [°F]
max. +40 +104
min. +5 +41
Pressures
Min. suction pressure p
1 min
for operation
with cavitation-protection
Cavitation-protection tapping open (2BV2 0.. and
2BV5 1.. only)
[mbar abs.] [psia]
max. achievable under-pressure (full throttling)
As a general rule:
The higher the temperature, the lower the suction
capacity, i.e. the higher the minimum achievable
suction pressure.
610.44440.99.B04
- 
fl
[°C, °F] = temperature of the operating-
liquid
- p
1
[mbar abs., psia] = absolute suction pres-
sure
Fig. 2: Pressure characteristics at varying
operating conditions
50
100
200
250
300
p 1
[m
b
ar ab
s.
]
0 20 40 60

fl
[°C]
80
150
0,5
1
1,5
2
2,5
3
3,5
4
4,5
0

fl
[°F]
p
1
[
p
sia]
50 100 150 200