M&C TechGroup EC-30_FD Operator's manual - Manual (Page 18)

18
Gas sampling and gas conditioning technology 3-4.20-ME
14 START-UP
The control electronics of the EC30(/FD) permit automatic start up of the cooler, which also ensures
safe and guaranteed operation regardless of external influences such as a power failure. The error
diagnostics guarantee full monitoring and reporting of possible sources of error. The following
description is valid for startup of the gas cooler for an ambient temperature > 5

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 has 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 low- and excess 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!
14.1 FUNCTION SEQUENCE AND LED FUNCTION DISPLAY
Three function display LEDs are provided to give a visualization of the function sequence during start
up of the cooler. According to the type of installation, they are located either on the front panel or the
back panel of the cooler (fig. 2). The top LED (red) indicates that the temperature set by the EC
automatic control electronics for the pre-cooler stage has been exceeded or has not been reached.
The two-colour (pink/green) LED in the middle shows that the cooler compressor is operating (on/off).
The bottom red function display LED gives an alarm if the pre-cooler stage temperature falls too low or
if the low-temperature stage temperature is exceeded.
Switching the cooler on
As soon as there is a mains voltage, the top red LED lights up. This
indicates that the temperature of the pre-cooler  is min. 3

C above the set
temperature of +1

C. The two-coloured LED in the middle lights up as pink
once the cooler compressor is in operation.
°C >
ON
°C <
red
pink
green