Humboldt HM-4160 FlexPanels - Manual (Page 16)

Operation
This section discusses the use of FlexPanels when running a typical test.
Refer to Figure 8 on next page)
Master Controller
The individual functions of the Master Controller are reviewed below.
Digital Display
The Digital Display provides a readout of the cell, base or top pressures of an
individual test cell. To read a pressure, raise the toggle valve (T1, T2 or T3),
located under the regulator for the section you wish to check. (Indicated by the
second red arrow) and the pressure will be displayed in the digital display. Only
one section pressure can be read at a time.
Air Pressure Supply Regulator and Gauge
The Lower Service Connector Plate has a connector for a compressed air line
(PRESS IN). Compressed air is connected to the air regulator, which is adjusted
to set the desired pressure. This pressure is displayed on the regulator‘s pressure
gauge. The regulator is turned clockwise to increase pressure and counter-
clockwise to decrease it. Regulated pressure is connected to the Lower Service
Connector
Plate, which feeds pressure to any Add-On Panels. The regulated output
should be set at a pressure below the low-end pressure of the air compressor.
The Add-On Panel Regulators can not be used at levels near or greater than
the pressure setting.
Vacuum Regulator and Gauge
The Lower Service Connector Plate has a connector for a vacuum pump (VAC).
The vacuum pump's output is controlled by a vacuum regulator connected
to the Lower Service Connector Plate. The vacuum pressure can be read on
the Pressure Gauge on the front of the panel above the regulator. There is
a connection for regulated vacuum and the Pressure/Vacuum Output Quick
Connect at the bottom left corner of a Control Panel.
De-aired Water Tank Controls
This section is made up of two valves which control the functions of the
de-aired water tank. The top valve connects a regulated, low-level air pressure
source or a vacuum from the vacuum pump. The air pressure is used to help
force the water from the de-aired water tank into the individual Section Burettes
of a Control Burette Group, or it is used when force draining the De-airing
tank. It is recommended that the De-airing Tank be positioned above the panel
boards and allowing the de-aired water to gravity flow into the burettes rather
than applying pressure to force the water into the burettes. This helps maintain
the de-aired quality of the water.
The vacuum is used when making de-aired water. The lower valve is used to
drain the tank or fill it with water from a supply. The water supplied can be tap
water or a specially prepared water.