M&C TechGroup EC-EX Operator's manual - Manual (Page 11)

11
Gas sampling and gas conditioning technology 3-4.1ME EC-EX 9904
The EC-EX cooling compressor has a special junction box and one surface area temperature alarm
contact with manual reset button. The refrigeration circulation suction side of the EC-EX compressor
has a pressure alarm unit with manual reset button.
This alarms are connected into the Ex-i-circuit and to switch off the voltage of the compressor during
compressor temperature alarm or pressure alarm.
N O T E !
The manual Reset for the pressure alarm is cancelled since September 2004.
The cooler is switched off continuously in case of a leaking cooling system!
The EC-EX cooler in 230V-version has two EEx-q compressor start capacitors, the EC-EX cooler in
115V-version three.
The electrical connectors for mains power supply and the alarm contact output are located in the
EEx-e terminal box.
On the upper side of the cooler casing you will see the cut-outs  for maximum 4 heat exchangers.
Sample gas enters and leaves the heat exchangers by the correspondingly connections on the upper
part of the heat exchangers.
At the rear part of the casing the condenser  to remove heat given off in the compressor can be
seen.
On the underside of the casing the following connections are provided as standard:
 Standard condensate outlets from the heat exchangers respectively,
 Cable glands PG 13,5;
As standard, the condensate is removed externally with collecting vessels, peristaltic pumps
SR25.1/Ex
, or by “over-pressure operation”, with automatic drawing-off of condensate, as e.g. type
AD-... .