Sullair E900H User Manual page 36

E900H USER MANUAL
Table 5-1: Purpose of Controls
CONTROL OR INDICATOR
PRESSURE REGULATOR (LOAD CHAMBER)
PRESSURE REGULATOR (UNLOAD CHAMBER)
SOLENOID VALVE
START CONTROL VALVE
PNEUMATIC INLET VALVE
MINIMUM PRESSURE/CHECK VALVE
BLOWDOWN VALVE ASSEMBLY
THERMAL VALVE
FLUID LEVEL SIGHT GLASS
SEPARATOR RETURN LINE SIGHT GLASS
PRESSURE RELIEF VALVE
RECIRCULATION VALVE
5.3 INITIAL START-UP
PROCEDURE
1. Place machine in level, suitable area and
chock the wheels.
2. Ensure that red shipping studs are loosened
and not supporting the motor or compressor
unit.
3. Connect power to machine. See "Electrical
Preparation" on page 33.
4. Check compressor fluid level.
Level Check" on page 33.
5. Fully open the air service valve.
6. Turn on main power supply and disconnect
on machine. At this time, the power indicator
light shall be on and the machine is ready to
start.
36
PURPOSE
Maintains a maximum pilot pressure of 60 psig (4.1 bar).
Opens a pressure line between the sump and the inlet
unload chamber, allowing the inlet valve to regulate air
delivery according to air demand.
Electrically actuated 3-way solenoid valve used to open
the blowdown valve and pressurize the unload port/close
the inlet valve during shutdown.
Opens when the Wye-Delta timer closes; closes when
the Wye-Delta timer is open. Opens a pressure line
between the sump and inlet load chamber allowing the
inlet valve to deliver air.
Regulates the amount of air being delivered. Also
blocks reverse flow upon shutdown.
Maintains a minimum pressure in the receiver tank.
Prevents backflow from the system during
shutdown or unload.
Vents receiver tank pressure during unloading and
shutdown.
Regulates flow of fluid to the cooler in order to
minimize warm up time and maintain a minimum
operating temperature to avoid condensation.
Used to monitor fluid level. Proper level is always
visible in the sight glass. Check the level when the
compressor is shutdown.
Indicates fluid flow from the separator scavenge.
Flow should be visible during full load; little to no
flow when unloaded. Sluggish full load flow
indicates a need to clean the strainers fitted to the
return lines.
Opens receiver tank pressure to atmosphere if
receiver tank pressure exceeds relief valve setting.
Provides limited air supply back to inlet valve during
unload conditions to prevent cavitation in unit.
7. Depress start button and observe.
machine starts, the run indicator light will be
on and the electrical connection is correct. If
the machine fails to start, the compressor
has been wired out of phase. Disconnect
power and switch two of the phases.
8. Once machine is started, verify that it
unloads at the rated pressure.
9. Stop the compressor per shutdown proce-
dure and check fluid level.
See "Fluid
Allow 5 minutes between starts for oil foam
to subside and the motor to cool.
02250203-986 R01
SECTION 5
CAUTION
If