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1.2 Mounting
Mount the dryer on a level solid surface. Holes are provided in
the dryer base to permanently mount the dryer to the floor.
1.3 Piping Connections
A. Air Inlet - Connect compressed air line from air source to
air inlet.
Refer to Serial Number Tag for maximum
working pressure. Do not exceed dryer’s Maximum Working
Pressure.
NOTE: Install dryer in air system at highest pressure possible
(e.g. before pressure reducing valves).
NOTE: Install dryer at coolest compressed air temperature
possible. Maximum inlet compressed air temperature: 120°F
(49°C). If inlet air exceeds this temperature, precool the air with
an aftercooler.
B. Air Outlet - Connect air outlet to downstream air lines.
C. Bypass piping - If servicing the dryer without interrupting
the air supply is desired, piping should include inlet and
outlet valves and an air bypass valve.
D. Water-cooled models - cooling water inlet and outlet
1. Connect cooling water supply to cooling water inlet.
2. Connect cooling water return line to cooling water
outlet connection.
NOTE: Strainer and water regulating valve are supplied on
water-cooled models. Also, it is recommended to add water
inlet/outlet temperature and pressure gauges to the water
piping.
1.4 Electrical Connections
IMPORTANT: Use copper supply wires only.
A.
Dryer is designed to operate on the
voltage, phase, and frequency listed on
the serial number tag.
B. Electrical entry is through a hole in the
top of the cabinet. Route wires through the bottom of the
electrical enclosure. Connect power source to the terminal
strip in the electrical enclosure as shown on the electrical
schematic included with the dryer.
NOTE: Refrigeration condensing unit is designed to run
continuously and should NOT be wired to cycle on/off with the
air compressor.
1.5 Electronic Demand Drain
A. An automatic electric demand drain (EDD)
discharges condensate removed by the
separator.
B. All dryer models are supplied with one
EDD. Models with the additional (optional)
oil removal filter are supplied with a second
EDD.
C. The drains are piped to fittings in the leg of the unit.
Condensate should be piped from this fitting to an open
vented floor drain or sump.
NOTE
:
Discharge is at system pressure. Drain line should be
anchored.
NOTE
:
Condensate may contain oil. Comply with applicable
laws concerning proper disposal.
D. Verify that isolation valves are open. If the drain fails to
discharge after the valve is energized, the electronic con-
trol circuit will repeatedly energize the valve in an attempt
to clear the discharge port. If, after 60 seconds, the drain
still fails to discharge, the control circuit then switches to
the alarm mode. In this mode the valve is de-energized
and the red alarm light is activated on the drain and the
dryer controller. The valve is then automatically energized
every 4 minutes for 5 seconds. Check the drain operation.
Push drain (push-to-test) button on the Energy Manage-
ment Monitor control board to energize drain. A flow of
condensate and/or air should be present at the drain
outlet. The alarm mode automatically clears after the drain
returns to normal operation.
E.
Description of Operation:
Condensate enters the
reservoir (1) through the inlet port. When the conden-
sate level in the reservoir covers the capacitance sensor,
an electronic signal is sent to the solid state countdown
processor. The processor delays the opening of the sole-
noid valve for a given period of time. Once the time has
elapsed, the solid state processor transmits information to
energize the coil in the solenoid valve (2). The magnetic
force of the coil causes the solenoid core (3) to move,
closing the pilot air supply line and opening the pilot air
exhaust line. After the pilot air above the diaphragm (4) is
vented, pressure in the reservoir opens the discharge port
and forces the condensate through the discharge port and
outlet piping.
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