M&C TechGroup EC-EX Operator's manual - Manual (Page 16)

16
Gas sampling and gas conditioning technology 3-4.1ME EC-EX 9904
The power connection is in the terminal box inside the cooler housing
Terminal 1 2 3
EC-EX Terminal box
Connection L N PE
The potential-free contact of the status collector alarm is located as well in the terminal box inside the
EC-EX cooler housing.
Terminal 11 12 13
EC-EX Terminal box
Connection NC COM NO
Two PG 13.5 cable glands are provided for the cable bushings through the base plate of the cooler
casing.
The volt free contact output of the status group alarm is located on the same EEx-e terminal box.
N O T E !
If you want to connection this alarm contact, please remove the certified
stopping plug and install the enclosed certified cable gland. Certified cable
gland PTB-Nr. EX-90.C.1004 EEX eII must be used only, to maintain the EEx-e
class of protection.
16 START-UP
The automatic control electronics of the EC-EX permit automatic start-up of the cooler. The error
diagnostics guarantee full monitoring and reporting of possible sources of error.
The following description is valid for start-up of the gas cooler for an ambient temperature > 8°C.
N O T E !
Before starting up the gas cooler, it must be placed in its operating position
for at least two hours. The liquid inside the system may have been
redistributed, and this could cause problems in operating!
The following steps should be carried out before initial start-up:

Connect the cooler unit to the mains power supply;

Check that the equipment is connected to the correct mains voltage, 115V or 230V, as shown on
the type plate!

Lead the status contacts for reporting of under- and over-temperature to the measuring station;
N O T E !
The status contacts must be connected to the external sample gas pump or
to a valve in the sample gas line to protect the entire analysis system by
immediately cutting off the gas supply in the event of error messages from
the cooler!