English (US)
28
Diaphragm tank volume
The stop function requires a diaphragm tank of a certain minimum
size. Set the size of the installed tank in this display.
In order to reduce the number of start/stops per hour or to reduce
the ∆H, a larger tank can be installed.
The tank must be installed immediately after the pump and the
precharge pressure must be 0.7 x actual setpoint.
Recommended diaphragm tank size:
If a diaphragm tank of the above size is installed in the system,
the factory setting of ΔH is the correct setting. If the tank installed
is too small, the pump will start and stop too often. This can be
remedied by increasing ΔH.
Analog input 1, 2 and 3, Function
The analog inputs can be set to these functions:
• Not active
• Feedback sensor
• Ext. setpoint infl.
See section 11. External setpoint signal for further description.
• Other function.
The number of available displays depends on the pump type. See
below.
Rated flow rate
of pump
[gpm (m
3
/h)]
CRE pump
Typical diaphragm
tank size
[gal (liter)]
0-26
(0-5.9)
1s, 1, 3 2 (7.6)
27 - 105
(6.1 - 23.8)
5, 10, 15 4.4 (16.7)
106 - 176
(24.2 - 40)
20, 32 14 (53.0)
177 - 308
(40.2 - 70.0)
45 34 (128.7)
309 - 440
(70.2 - 99.9)
64, 90 62 (234.7)
441 - 750
(100 - 170)
120, 150 86 (325.5)
Function (terminal) CME
CRE, CRIE,
CRNE, CRKE,
SPKE, MTRE
Analog input 1, Function (4) ●●
Analog input 2, Function (7) ●●
Analog input 3, Function (14) - ●
To Next Page
Loading...
Need help?
General
