EGK 2A Ex
When using automatic condensate drains, the gas pump must be installed ahead of the cooler to ensure proper function of the
condensate drain.
If the sample gas pump is located at the cooler outlet (suction operation), we recommend using glass condensate collectors or
peristaltic pumps.
Glass vessels and automatic condensate drains are available for draining condensate for external mounting below the unit.
Connecting a condensate drain: depending on the material, build a connecting line with fittings and tubing or hose between
the heat exchanger and condensate drain. For stainless steel the condensate drain can be suspended directly to the connecting
tube, for hoses the condensate drain must be secured separately using a clamp.
Condensate lines must always be installed with a slope and a minimum inside diameter of DN 8/10.
An external peristaltic pump may be installed a little away from the cooler.
Be sure the gas line connections are tight.
5.3 Peristaltic pump connector (optional)
When using peristaltic pumps, these can also be mounted separate from the cooler. An adapter plate is available to mount the
pumps directly below the cooler. The cooler frame features mounts for mounting the plate. Mount with M6 screws and a tight-
ening torque of 6.3 Nm.
When ordering the cooler with attached peristaltic pumps, these are already installed but not yet wired. A 3 m cable on each
pump allows wiring outside the cooler. Please refer to the separate operating instructions for more information about connect-
ing the peristaltic pump.
Heat exchangers ordered at the same time are already installed and connected to the peristaltic pumps.
NOTICE
Installing peristaltic
pumps
CPsingle / CPdouble limits the maximum permissible
oper-
ating pressure
in the system!
Operating pressure ≤ 1 bar
5.4 Electrical connections and potential equalisation
The operator must install an external separator for the device which is clearly assigned to this device.
This separator
– must be located near the device,
– must be easy for the operator to reach,
– must comply with IEC 60947-1 and IEC 60947-3,
– must separate all live conductors and the status output, and
– must not be attached to the power feed.
DANGER
Electrical voltage
Electrocution hazard.
a) Disconnect the device from power supply.
b) Make sure that the equipment cannot be reconnected to mains unintentionally.
c) The device must be opened by trained staff only.
d) Regard correct mains voltage.
NOTICE
When used in explosive areas
Regulation IEC/EN 60079-14 must be observed when erecting electrical systems in ex-
plosive areas.
Additional national regulations pertaining to initial operation, operation, maintenance,
repairs and disposal must be observed.
12
Bühler Technologies GmbH
BE450020 ◦ 01/2020