Operating instructions
K3G450-AQ24-90
`
II 2G Ex db eb ib IIB T3 Gb
IBExU14ATEX1122 X /02
`
Translation of the original operating instructions
54004-4-8670
Fig. 4: Connecting wires to terminals (example)
There must be no mechanical stress acting between the terminal and the
cable gland. The cable must be relieved of strain.
Fig. 5: Secure the brackets (included in terminal box) for strain relief of
the wires
Fig. 6: Strain relief for shielded wires
The strain relief acts on the cable sheath, eliminating strain on
the leads.
DANGER
Risk of explosion due to poorly sealed terminal box.
The terminal box cover, its seal and the contact surface on the
housing must not be soiled or damaged.
→ Clean the contact surfaces if soiled; heed the section on
cleaning.
→ If the device is damaged, send it to ebm-papst for repair
or replacement.
The terminal box is only properly sealed if the terminal box
screw connections and cable glands have been tightened to the
specified torque.
5.3.3.1 Replacement of cable glands and screw plugs
If you would like to replace cable glands or screw plugs, for example
because they have been lost or become worn out, they must have the
following characteristics.
CAUTION
Required properties for cable glands and screw plugs:- Ex e
approval
- Usage temperature -40°C to 85°C
- Connection thread M20 x 1.5 mm or M25 x 1.5 mm
- Sizing corresponding to cable diameter
- Material: Nickel-plated brass or stainless steel
5.3.4 Cable routing
Water must be prevented from reaching the cable gland along the cable.
To relieve strain on the cables, we recommend fastening the cables at
intervals of 10 cm.
Fans installed lying flat
Make sure the cables are routed in a U-shaped loop.
Fig. 7: Fan installed lying flat, cable routed in a U-shaped loop.
Item no. 54004-5-9970 · ENU · Change 272968 · Approved 2022-11-22 · Page 13 / 18
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