13–10–612 Page 22
When the relief valve opens, a stream
of high velocity air is released, result-
ing in a high noise level and possible
discharge of accumulated dirt or oth-
er debris. Always wear eye and ear
protection and stand clear of the dis-
charge port when testing the relief
valve to prevent injury.
Operation of unit with an improper re-
lief valve setting can result in severe
personal injury or machine damage.
Ensure properly set valves are
installed and maintained.
Never paint, lubricate or alter a relief
valve. Do not plug vent or restrict dis-
charge.
Low Oil Pressure – The ”Auto Sentry–ES” will shut
down the unit if inadequate oil pressure to the compres-
sor is detected. If this occurs, check the wiring and pip-
ing solenoid valves.
Emergency Stop – Pressing the emergency stop but-
ton will shut down the unit and the controller. To restart,
pull the button out to its normal position and reset the
controller.
Power Failure – Following power interruptions, the
controller will remain in a shutdown state.
High Vibration (optional) – This optional feature will
shut down the unit if abnormally high vibration is de-
tected.
Check CN 7 (8, 9) – This indicates a wiring error or con-
nection problem. Remove power and correct all wiring.
Blowdown Valve – (FIGURE 4–3) The blowdown so-
lenoid valve releases pressure from the oil reservoir
during any shutdown condition, and during some oper-
ating conditions. See description under ”Air Control
FIGURE 4–3 – BLOWDOWN VALVE
Components” in this section for construction and op-
eration information.
GAUGES AND DISPLAYS
Oil Filter Indicator – An oil filter indicator is located on
the head of the oil filter and indicates when the oil filter
needs servicing.
Oil Level – The oil level gauge is located on the side
of the reservoir. See Section 5, page 5, ”Lubrication, Oil
Cooler, Oil Filter and Separator” for information on how
to correctly read the gauge. All other instruments are
part of the programmable controller.
COMPRESSOR CAPACITY CONTROL – The capac-
ity of the compressor is controlled by the action of the
Turn Valve and the Compressor Inlet Valve.
The turn valve controls compressor delivery to match
demands of 40% to 100% of the compressor’s maxi-
mum capacity. The inlet valve throttles to control com-
pressor delivery to match demands of 0% to 40% of the
compressors maximum capacity.
Example with normal setting of 100 PSIG:
Summary of Contents for ELECTRA-SAVER EAU PD - 200 HP
Page 13: ...13 10 612 Page 3 FIGURE 1 4 STARTER BOX FIGURE 1 5 PACKAGE CONTROLLER AND STARTERS...
Page 16: ...13 10 612 Page 6 DECALS 206EAQ077 212EAQ077 218EAQ077 211EAQ077 207EAQ077...
Page 17: ...13 10 612 Page 7 DECALS 216EAQ077 217EAQ077 222EAQ077 221EAQ077 208EAQ077...
Page 40: ...13 10 612 Page 30 FIGURE 4 8 CONTROL SCHEMATIC COMPRESSOR AT FULL LOAD 214ECM797 Ref Drawing...
Page 42: ...13 10 612 Page 32 FIGURE 4 10 WIRING DIAGRAM 212EAP546 Ref Drawing...
Page 43: ...13 10 612 Page 33 FIGURE 4 11 AUTO SENTRY ES CONTROLLER DISPLAY...
Page 45: ...13 10 612 Page 35 FIGURE 5 1 FLOW DIAGRAM AIR OIL SYSTEM 215EAU797 Ref Drawing...
Page 65: ......