EKOM 447000001-066, User Manual

Page: 31 / 72

INSTALLATION
04/2022 31 NP-DK50-9x4VRTM-AD-EN-5_04-2022
Fig. 23: Connecting the power cord
Description of air pump controls
The air pumps are controlled in sets of three
based on real demand. One of the three is
always set as the MASTER (e.g. M1-3) and
the
others as SLAVE1 (e.g. M4-6)
and SLAVE2 (e.g. M7-9). The Slave sets
operate under the following conditions (see
Fig. 24):
- A waiting period (pressurising to the
upper limit) of 1 minute under strong
demand and 2 minutes under weak
demand;
- The activation pressures are below
6.4 bar (SLAVE1) and then below 6.2
bar (SLAVE2);
- Motor failure in the MASTER section.
The lower limit settings ROTATE every 50
hours to ensure all the air pumps are evenly
loaded.
Fig. 24: Air pump controls
A
– motors M1-M3
B
– motors M4-M6
C
– motors M7-M9
UL
– upper limit
BL
– bootom limit → Master=6.4, SLAVE1=6.2, SLAVE2=6.0