EGK 2-19 (+)
If a large amount of condensate accumulates, we recommend
using a condensate trap with automatic condensate drain.
Our condensate drains, 11 LD spec., AK 20 V, or model 165 SS,
are suitable.
Glass vessels and automatic condensate drains are available
for draining condensate for external mounting below the
unit. When using automatic condensate drains, the sample
gas pump must be installed upstream of the cooler (pressure
operation) 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 traps or
peristaltic pumps.
Connecting the condensate drains
Depending on the material, build a connecting line with fit-
tings 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.
The condensate drain can be mounted directly to the heat ex-
changer.
Condensate lines must always be installed with a slope and a
minimum inside diameter of DN 8/10 (5/16”).
4.2.1 Peristaltic pump connector (optional)
Coolers ordered with attached peristaltic pump already have
it installed and wired. Heat exchangers ordered at the same
time are already installed and connected to the peristaltic
pump.
The ø6 mm (0.24 inch) hose nipple for the pump’s condensate
outlet must be carefully and properly connected with a suit-
able hose and hose clamp.
Versions with screw connections DN 4/6 or 1/6”-1/4” are sup-
plied with ferrule and knurled nut and must be carefully
sealed with appropriate hose.
NOTICE
Installing peristaltic pumps CPsingle / CPdouble limits the
maximum permissible operating pressure in the system!
Operating pressure ≤ 1 bar
4.3 Electrical connections
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.
WARNING
Hazardous electrical voltage
The device must be installed by trained staff only.
CAUTION
Wrong mains voltage
Wrong mains voltage may damage the device.
Regard the correct mains voltage as given on the type plate.
WARNING
High voltage
Damage to the device in case of insulation testing
Do not proceed insulation tests with high voltage to the
device as a whole!
Insulation test
The device is equipped with extensive EMC protection. If insu-
lation tests are carried out the electronic filter devices will be
damaged. All necessary tests have been carried out for all con-
cerned groups of components at the factory (test voltage 1 kV
or 1.5 kV respectively, depending on the device).
If you wish to carry out the insulation test by yourself, please
test only separate groups of components.
Disconnect the compressor, the fan, the heating or the peri-
staltic pumps, respectively, and then carry out the insulation
tests.
Connection via plug
The device is equipped with connectors according to EN
175301-803 for mains and status output. If the cables are
mounted properly, they cannot be interchanged. Please make
sure that the connectors are remounted correctly after con-
necting the cable. The following figures show the pin assign-
ment with respect to the numbers printed on the connector.
The supply line cross-sections must be suitable for the rated
current. Use a maximum line cross-section of 1.5 mm²
(AWG 16) and a cable diameter of 8 - 10 mm (0.31 - 0.39 inch).
pin assignment
power supply
Fig. 1:
A100048 Cooler electric supply
The supply voltage is 230 VAC 50/60 Hz or 115 VAC 50/60 Hz
(please note type plate!). The mains supply must be protected
with 10 A. The clamping area has a diameter of 8-10 mm.
4.4 Signal outputs
At the back of the unit is a 12-pin PHÖNIX connector which
provides various status signals. The maximum switching
power of the alarm outputs is 250 VAC/DC, 1 A each.
An alarm is triggered if the temperature of the cooler is out-
side the specified limits. It does not indicate if the alarm was
triggered due to excess temperature or insufficient temperat-
ure.
8
Bühler Technologies GmbH
BX450010 ◦ 10/2018
