Operating instructions
G1G140-AW31-42
Stiebel Eltron GmbH & Co KG
LWZ203/303
Translation of the original operating instructions
4. CONNECTION AND START-UP
4.1 Connecting the mechanical system
CAUTION
Cutting and crushing hazard when removing the blower
from the packaging
→ Carefully remove the blower from its packaging, only
touching the housing. Make sure to avoid any shock.
→ Wear safety shoes and cut-resistant safety gloves.
;
Check the device for transport damage. Damaged devices must no
longer be installed.
;
Install the undamaged device according to your application.
4.2 Connecting the electrical system
DANGER
Electric voltage on the device
Electric shock
→ Always install a protective earth first.
→ Check the protective earth.
DANGER
Incorrect insulation
Risk of fatal injury from electric shock
→ Use only cables that meet the specified installation
requirements for voltage, current, insulation material, load etc.
→ Route cables such that they cannot be touched by any
rotating parts.
CAUTION
Electrical voltage
The device is a built-in component and features no electrically
isolating switch.
→ Connect the device only to circuits that can be switched off
using an all-pole disconnecting switch.
→ When working on the device, you must switch off the
system/machine in which the device is installed and secure
it from being switched on again.
NOTE
Interferences and failures are possible
Maintain a distance to the power supply line when routing the
control lines of the device.
→ Ensure a sufficiently large clearance.
Recommendation: clearance > 10 cm (separate cable
routing)
NOTE
Water penetration into leads or wires
Water enters at the cable end on the customers side and can
damage the device.
→ Make sure that the cable end is connected in a dry
environment.
Connect the device only to circuits that can be switched off
using an all-pole disconnecting switch.
4.2.1 Prerequisites
;
Check whether the data on the type plate agree with the connection
data.
;
Before connecting the device, ensure that the supply voltage matches
the operating voltage of the device.
;
Only use cables designed for current according to the type plate.
For determining the cross-section, follow the basic principles in
accordance with EN 61800-5-1. The protective earth must have a
cross-section equal to or greater than the outer conductor cross-
section.
We recommend the use of 105°C cables. Ensure that the minimum
cable cross-section is at least
AWG26/0.13 mm².
Earth wire contact resistance in accordance with EN 60335
Compliance with the impedance specifications in accordance with EN
60335 for the protective earth circuit must be verified in the end
application.
Depending on the installation situation, it may be necessary to install an
additional protective earthing conductor via the additional protective earth
connection point available on the device.
4.2.2 Idle current
Because of the EMC filter integrated for compliance with EMC
limits (interference emission and interference immunity), idle
currents in the mains cable can be measured even when the
motor is at a standstill and the mains voltage is switched on.
4.2.3 Locked-rotor protection
Due to the locked-rotor protection, the start-up current (LRA) is
equal to or less than the nominal current (FLA).
Item no. 50989-5-9970 · Revision 72138 · Release 2014-01-24 · Page 6 / 10
ebm-papst Mulfingen GmbH & Co. KG · Bachmühle 2 · D-74673 Mulfingen · Phone +49 (0) 7938 81-0 · Fax +49 (0) 7938 81-110 · [email protected] · www.ebmpapst.com