Bühler technologies EGK 2A Ex, Инструкция по установке и эксплуатации, Страница: 13 / 61

EGK 2A Ex
5 Installation and connection
5.1 Installation site requirements
The unit is intended for use in enclosed areas. Adequate protection from the weather must be provided when used outdoors.
The approved environmental conditions for explosive areas according to the enclosed data sheet must be met.
The sample gas cooler can be used as a stand-alone unit or wall mounted. Do not obstruct the convection. Maintain a clearance
to other objects of at least 10 cm all around the bottom of the cooler. Above the cooler, particularly above the rear vent, maintain
a clearance of at least 40 cm. With respect to components installed above, remember the air emitted upward from the cooler
can be very warm.
Ensure adequate ventilation when installing in enclosed housings, e.g. analyser cabinets. If the convection is inadequate, we re-
commend aerating the cabinet or installing a fan to lower the inside temperature.
When wall mounting the sample gas cooler, be sure the wall or the cabinet provide adequate weight bearing and stability. We
recommend mounting to solid walls with metal wall anchors and M8 screws with washer. Additional requirements (tightening
torque, screw-in depth, etc.) must be selected per the specifications of the metal anchor manufacturer. When mounting inside
control cabinets, we also recommend mounting with M8 bolts directly to the mounting plate.
5.2 Connecting the gas- and condensate connections
CAUTION Explosion hazard
Before using any accessories with the sample gas cooler, verify these parts are suitable
for the purpose and use in explosive atmospheres.
Please note, accessories may limit use of the sample gas cooler with respect to explosion
protection.
On glass heat exchangers the correct position of the seal is important when connecting the gas lines. The seal consists of a silic-
one ring with a PTFE sleeve. The PTFE side must face the glass thread.
Glass
PTFE
Fig. 2: A100000 Heat exchanger seal
Run the gas supply with a downward slope all the way to the cooler. If a large amount of condensate accumulates, we recom-
mend using a condensate pre-separator before the cooler. Our fluid separators with automatic condensate drain, 11 LD spec.,
AK 20 V or model 165, are suitable.
The gas inputs on the heat exchanger are marked red
When using glass- or PVDF heat exchangers the enclosed cover must be used. In this case remove the cover, pull the hoses
through the cover, connect the hoses to the heat exchanger, and finally replace and secure the cover.
Be careful when connecting the glass- and PVDF heat exchanger, and only tighten the fittings by hand.
DANGER Explosion hazard due to flame propagation
Severe injuries and damage to the system
If the process holds a risk of flame propagation, install a flame arrestor.
11 Bühler Technologies GmbH BE450020 ◦ 01/2020