M&C TechGroup ECS Operator's manual - Manual (Page 30)

30
Gas sampling and gas conditioning technology 3-4.1-ME
For changing the cooler aggregate please carry out the following steps:

Remove the heat exchangers (16.2);

Loosen the fastening screws from the front panel of the cooler casing (Fig. 2);

Disconnect the earth wire of the front panel and remove the front panel;
N O T E !
If the LED function display is fitted in the front panel of the cooler casing
(wall mounting) pay attention that the display will not be damaged by
removing the front panel!
 If the LED function display is fitted in the back panel of the cooler casing (19“ version) it must be
pull out of the bracket before removing the cooler cover;
N O T E !
If replacing the LED function display please pay attention to the correct
position-ing (marked position respectively the connection cable points to
the base plate of the casing)!

Loosen the fastening screws of the cooler cover;

Before removing the cooler cover disconnect the earth wire;

Disconnect the cooler compressor from the EC automatic control electronics (18.1). For this
remove the cap of the plastic housing (Fig. 2) and disconnect the cables from the corresponding
terminals (Fig. 5) (replacement cooler aggregate does not include connecting cables).

Disconnect the earth wire at terminal 3;

Loosen the fastening screws 1 of the cooler aggregate;

Loosen screw 2 in the aluminium cooling block (it is covered under the isolation and is not visible
from outside). For this push the isolation backwards;

Loosen the vaporizer 4 by vibrations in the middle of the cooling block. If the vaporizer is bind it is
possible to loosen it through a drilling in the base plate of the cooler by means of compressed air;

Lift the complete cooler aggregate (4, 5, 7) out of the cooler casing;
The mounting of the replacement cooler aggregate happens in opposite order. For this smear the
aluminium distributor block and the vaporizer sufficient with thermal conductivity paste (part number
90K0115).
After replacing the aggregate the cooler has to be start up according to the instructions given in
chapter 9. The cooler temperature can be controlled after approx. 30 minutes by means of a
thermometer in drilling 10.