Replacement Of Micro-Fuse Of The Cooler; 115 V And 230 V; Cleaning Of The Heat Exchanger - Buhler PKE-511 Bedienungs- Und Installationsanleitung

Bedienungs- und Installationsanleitung
Installation- and Operation Instruction
Messgaskühler / Sample Gas Coolers PKE-5xx

6.3 Replacement of Micro-Fuse of the Cooler

6.3.1 115 V and 230 V

 Disconnect the cooler from power supply.
 Loosen the 8 screws fixing the cover to the case. If peristaltic
pumps are installed to the cooler they must be disassembled
because they are fixed with the cover-screws.
 Remove the cover carefully. Caution: The display is fixed to the
cover and is connected to the electronics inside the device. The
plug can be put off to lay the cover down.
 The fuse is placed on the small supply circuit board, covered by a
plastic cap. Replace the fuse and refit the cap. Regard the supply
voltage for choosing the correct fuse.
 Reconnect the plug of the display and fix the cover. Fasten the
screws or install the pumps, respectively.
 Reconnect power supply.
6.3.2 24 V DC
 Disconnect the cooler from power supply.
 Loosen the 8 screws fixing the cover to the case.
 Remove the cover carefully. Caution: The display is fixed to the
cover and is connected to the electronics inside the device. The
plug can be put off to lay the cover down.
 The fuse is placed in the fuse holder (see picture). Turn to open it
and replace the fuse. Regard the supply voltage for choosing the
correct fuse.
 Reconnect the plug of the display and fix the cover. Fasten the
screws.
 Reconnect power supply.

6.4 Cleaning of the heat exchanger

The heat exchanger must be replaced only in case of damage or when clogged. In the latter case we
recommend to check if the use of a filter will avoid such clogging in the future.
 Turn off gas supply.
 Disconnect the cooler from the mains.
 Loosen gas fittings and condensate drain fitting. Collect condensate.
 Pull out the heat exchanger upwards out of the cooler.
 Clean the cooling nest (hole in cooling block).
 Clean the heat exchanger until all impurities are disposed.
 Grease the heat exchanger on the cooling surfaces with silicone grease.
 Introduce the heat exchanger with turning movement into cooling nest.
 Re-establish fittings for gas tubes and condensate drain.
BX440010 08/2013 Art. Nr. 90 31 105 31