4
1.3 Piping connections
If welding above unit make certain that
sparks are kept from contacting insulation around inlet
and outlet piping.
A. Air Inlet - Connect compressed air line from
air source to air inlet.
IMPORTANT: 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 down-
stream air lines.
C. By-pass piping - If servicing the dryer
without interrupting the air supply is desired,
piping should include inlet and outletvalves and
an air by-pass valve.
D. Condensate Drain
1. Manual Drains - Petcocks (2) for manual
draining are attached to the manual drain
lines in the cabinet. Remove petcocks and
install into manual drain couplings. Make
sure petcocks are closed.
2. Automatic Drains - Drain lines can be run
from Automatic Drain outlets (2) to the plant
drainage system.
NOTE: Condensate may contain oil. Comply with
applicable laws concerning proper disposal.
NOTE: Discharge is at system pressure. Anchor drain line.
E. Water cooled models - cooling water inlet and outlet
1. Connect cooling water supply to cooling water inlet
coupling.
2. Connect cooling water return line to cooling water
outlet coupling.
NOTE: Strainer and water regulating valve are supplied on
water cooled models.
1.4 Electrical connections
IMPORTANT - Use copper supply wires only.
A. Unit is designed to operate on the voltage,
phase, and frequency listed on serial number tag.
B. Electrical entry is through hole in cabinet and
into electrical enclosure. Connect power source to
terminal strip in electrical enclosure as shown on
Electrical Schematic attached to dryer.
NOTE: Refrigeration condensing unit is designed to run
continuously and should NOT be wired to cycle on/off with
the air compressor.
PETCOCK
INSTALLED
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