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The main mode of operation is a water level triggered discharging. The valve opens when
water level in EMD HP’s tank reaches threshold and it closes back before the tank is empty.
This way, only condensed water is discharged and no compressed air is lost.
In the timed venting mode, the valve is opened when water level reaches threshold, too.
Besides, when the valve is closed continuously for a predetermined period, it is opened
shortly although there is no water in the tank. During working day, water in EMD HP collects
rapidly so that venting period would never expire and there are no air losses. When
production rests, EMD HP is opening its valve. But since these discharges are short and
sparse, air losses are small. The timed venting mode should be used when there is a lot of
debris in condensed water and piping upward the EMD HP could not be inclined enough.
Such situation is quite common under pressure vessels. It may happen that air could not
escape from the tank upward the piping and while there is air around water level sensor, the
EMD HP would never open. In the timed venting mode, the valve is opened after the venting
period has expired and trapped air is allowed to escape through drainage. Now, condensed
water can reach water level sensor and EMD HP is opening its valve until all collected water
is discharged.
The timed venting mode is disabled initially since situations when this mode is needed are
rare. The mode could be enabled through the service network.
To service network, only types of EMD HP with communication electronics built in could be
connected. The service network is used for uploading data that are collected in EMD HP
during its operation. The data are elapsed hours, number of water discharging, current
water level in the tank and other data that could help to supervise and troubleshoot the
system. Through the service network, some operating parameters of EMD HP like venting
period in timed venting mode could be set. Additionally, valve could be operated remotely.
Features:
No loss drain
EMD HP could be fixed horizontally or vertically
Strainer integrated in the bottom cover of water tank
Optional time venting mode of operation
Optional Alarm/ Warning output and Service Network Protocol for remote
surveillance
Elapsed hour counter, valve operating counter and other data collection
Easy replacement of parts due to wear
