Activation Levels Of The Float Switches; Electrical Control Unit - Kessel Aqualift F Installation And Operating Manual

3.2 Activation levels of the float switches

Single Pump
Off – On
On – Alarm
Twin pumps
Off – On1
On1 – On2
On2 – Alarm
Alarm levels are slightly below the wastewater inlet height to the pumping chamber

3.3 Electrical control unit

3.3.1 General technical data
Surrounding area requirements
Allowable operating temperature range:
0 to 50 deg Celsius
Allowable humidity:
10 to 80 percent (non condensing)
Maximum operating elevation:
2000 meters over sea level
Power requirement:
Max approx 11 VA for single and 15 VA for twin pumping sy-
stems (Electronics without motor)Protection Class
Class 1 with grounding of secondary circuit of the electro-
nics (PELV)
Protection type
IP 54 with proper installation / mounting
3.3.2 Control Unit Protection
IP 54 based on appropriate installation and securely closed
cover
3.3.3 Appropriate use
Information concerning the appropriate use of the
control unit in areas at risk of explosion.
The control unit is designed to operate KESSEL single or
twin pump wastewater lifting station. Float switches or other
level controls are used to monitor the wastewater levels in-
side the chamber.
The control unit is to be installed outside of the area desig-
nated as at risk of explosion.
Classifications
II (1) G [EEx ia] IIC/IIB
3. Technical data
System 800 inspection chamber
Vol (l) difference (approx)
150
90
-
-
-
(Group II, Category (1)G, desi-
gnated for use in gaseous at-
mospheres)
Height difference (cm) Vol (l) difference (approx)
31
20
-
-
-
The requirements of Norms EN 50014:1997 + A1 – A2, EN
50020:2002 have been fulfilled.
EG – Certification
BAS 01 ATEX 7217
Identification
II (1) G [EEx ia] IIC CE 1180 Ta = -20°C ... + 60°C
Installation / Commissioning
The lifting station must be installed, connected and com-
missioned only by a licensed professional. This professional
must be trained and certified in areas including types of ig-
nition, regulations and work in areas at risk of explosion.
Check to make sure that the pump classification (listed
above) satisfies the requirements of the installation area.
• Ambient temperatures in the immediate area of the
pumping station must remain between
0 – 50 deg Celsius (32 – 122 deg F).
Electrical data / Connections
Power supply – 3 x 400 Volt (AC) / 50 Hz +- 10%
(Jacks – N, L1, L2, L3 PE) 3-phase
230 V (AC) / 50 Hz +- 10% to supply electronics
Entry electrical circuit
Thermal entry Un = 230V
Connection jacks TF1, TF2a, TF1b, TF2b)
Output electrical circuit U = 42 V AC DC / 0.5 Amp
Relay malfunction and warning
Power contactor Switching contact U = 400V +- 10%
Passive operational element circuit (Control unit and switches)
System 1000 inspection chamber
Height difference (cm)
230
150
200
70
70
48
EX
31
20
31
10
10
<= 4kW, 50 Hz