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How to install Due to its small footprint, an AP1200 + WDO1200 purging system can be installed where it is most convenient on site It is very easy to install as only three shared connections are needed – for wet suction, low-pressure liquid and an input line for the fouled gas AP1200 The AP1200 works automatically when connected to a controller The amount of purged air can be determined from a controller with purge timer and capacity table This makes sure that the pressure inside is high enough and the temperature low enough for the gaseous ammonia in the inner chamber to condense When the air purger is filled with non-condensable gas, the controller opens the air purge connection and releases air until high liquid level is restored It then closes the air purge connection again WDO1200 The WDO1200 works automatically, but requires manual draining of the sludge and water reservoir when it is full A WDO unit evaporates – and thus purifies – the liquid ammonia by exploiting the refrigerant’s particular properties, pressure and temperature, with no additional energy inputs needed The ammonia evaporates before water, leaving dirt, oil and other contaminants to settle in the sludge reservoir When the controller display shows the alarm Pump down necessary, it means that the water percentage is higher than the set point 40% The WDO1200 then holds back the water dissolved in the liquid ammonia When the controller display shows the alarm Emptying necessary, it means that the water reservoir temperature is higher than the evaporation temperature (approx 12°C) and the water must be drained off This is also a manual operation 4385 200 AP1200 + WDO1200 stainless steel combined without controls AP1200 without controls 4385 150 AP1200 stainless steel without controls Controls for AP1200/WDO1200 4385 060 Controls for AP1200/WDO1200 16 purge point 4385 061 Controls for AP1200/WDO1200 32 purge point Technical data Refrigerant charge Surface of R717 separator Compliance Lowest operating temperature AP1200 Weight, empty Unit dimensions H x W x D 35 kg 0 748 m2 CE/PED -50 °C 51 kg 1340 x 588 x 344 mm Maximum operating pressure 25 bar Capacity 12 kW (approx ) Operating limits Part numbers AP1200 + WDO1200 purging system without controls Highest operating temperature 50 °C Unit dimensions H x W x D 1374 x 302 x 330 mm WDO1200 Weight, empty 46 kg 125 Compressors Chillers Heat pumps Controls Heat exchangers Customised AfterMarketPDF Image | Sabroe Products 2022
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