Sullair LS-25S-257KW, Руководство оператора и список запасных частей

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Section 2
DESCRIPTION
11
Figure 2---4 Air Inlet System
vented through the solenoid valve exhaust port.
The blowdown valve closes, and the inlet butterfly
valve opens. Also the air pressure at the spiral valve
actuator diaphragm is reduced through a vent hole
at the spiral valve differential pressure regulator,
and a spring in the actuator causes the spiral valve
to return to the full load (maximum) position.
AUTOMATIC OPERATION
For applications with varied periods of time when
there are no air requirements, Supervisor’s Auto-
matic mode allows the compressor to shut down
(time delayed) when no compressed air require-
ment is present, and restart as compressed air is
needed.
2.7 AIR INLET SYSTEM, FUNCTIONAL DESCRIP-
TION
Refer to Figur e
2 --- 4 . The c ompr essor inlet systems
consists of a dry---type air filter, a vacuum switch,
and an air inlet valve.
The vacuum switch, located on the compressor
Supervisor Control System, indicates the condition
of the air filter. When the message “AIR FILTER
MAINT RQD” is displayed,maintenance is re-
quired.
The butterfly---type air inlet valve directly controls
the amount of air intake to the compressor in re-
sponse to the operation of the Sullicon Control (see
S ec tion 2 . 6 , Contr ol S y stem, Func tional D esc r ip -
tion ) .
2.8. SUPERVISOR
ΙΙ
PANEL BASIC INTRODUCTION
Refer to Figure 2---5 . The Supervisor
ΙΙ
has a two
line display to show temperature, pressure and sta-
tus. It has a keypad for operating the compressor,
programming the control points and selecting dis-
plays. There is a graphic illustration with lamps that
light to show the item being displayed. The lamps
flash if that component is in an alarm condition.
2.9 KEYPAD
The keypad is used to control the machine as well
as display status and change setpoints. Refer to
figure 2 --- 5 for following key descriptions.
S
Stop --- Used to put the machine into
manual stop. It is also used to clear alarm
conditions.
O