User guide

3 ELECTRICAL CONNECTIONS
20
OPTIFLEX 2200 C/F
www.krohne.com 04/2013 - 4000861902 - AD IECEX OPTIFLEX2200 R02 en
Equipment needed (not supplied)
• 2.5 mm Allen wrench.
• De-energize the circuit.
• After the time given in the table that follows, remove the cover stop 1.
i Use a 2.5 mm allen wrench.
• Remove the terminal compartment cover 2.
Ex d ia- or Ex ia tb-approved devices:
Time for the internal temperature of the housing to decrease to a safe level
3.2.2 How to close the terminal compartment
Ex i applications
• Attach the terminal compartment cover 2. Turn the terminal compartment cover carefully to
prevent damage to the thread and the gasket.
• Make sure that the terminal compartment cover is tight.
Ex d / Ex t applications
• Attach the terminal compartment cover 2. Turn the terminal compartment cover carefully to
prevent damage to the thread and the gasket.
• Make sure that the terminal compartment cover is tight.
• Use a 2.5 mm Allen wrench to attach the cover stop 1.
• Make sure that the cover stop 1 screw is tight.
INFORMATION!
Ex i applications
Ex i applicationsEx i applications
Ex i applications
If you remove the terminal compartment cover, the device has a degree of ingress protection
IP 20.
WARNING!
Ex d / Ex t applications
Ex d / Ex t applicationsEx d / Ex t applications
Ex d / Ex t applications
Do not remove the terminal compartment cover while the electrical power is connected.
Temperature class Time for the internal temperature of the housing to
decrease to a safe level
[minutes]
T6, T5 10
T4, T3, T2 Not necessary
DANGER!
Ex d / Ex t applications
Ex d / Ex t applicationsEx d / Ex t applications
Ex d / Ex t applications
Make sure that the terminal compartment is correctly sealed. An explosion can cause death or
injury to personnel and/or damage to equipment. Obey the instructions that follow: