Gardner Denver ELECTRA-SAVER II Service Manual page 16

SECTION 3
.
STARTING & OPERATING PROCEDURES
A new unit as received from the factory has been prepared
for shipping only. Do not attempt to operate the unit until
checked and serviced as follows
1. Compressor Oil — Check the oil level in the oil
reservoir. Add oil only if the oil level gauge reads in
the red ADD OIL range. Do not mix different types
of oils The unit is shipped filled with
Gardner-Denver
GD800
Lubricating Coolant which is suitable for the
first 2000 hours under normal operating conditions
REPLACE OIL FILTER ELEMENT EVERY 1000
HOURS.
Initial fill or filling after a complete draining of the
system, may show the oil level beyond the red EX-
CESS oil range After start-uD oil will fall into the
operating range as system components are filled If
necessary, add oil to bring level into the center of
the RUN range when unit is operating on load see
Figure 4-5 for quantity of oil required
DANGER
ALWAYS STOP THE
PRESSURE BEFORE
PLUG TO ADD OIL
UNIT AND RELEASE AIR
REMOVING OIL FILLER
During unloaded operation and after shutdown the
system will partially drain back into the oil reservoir
and oil level will read higher than when operating on
load. DO NOT DRAIN OIL TO CORRECT on the
next loaded cycle or start oil will again fill the system
and the gauge will indicate the operating level
2.
Air Filter— Inspect the air filter to be sure it is clean
and tightly assembled Refer to Section 6 "Air Filter"
for complete servicing instructions Be sure inlet line,
if used, is tight and clean
3.
piping — Refer to Section 2 "installation" and make
sure the piping meets all requirements
4. Moisture Separator Trap — The trap is constructed
of cast iron with side inlet and outlet connections and
inverted bucket design A stainless steel internal
strainer is used in trap it should be checked period
ically for clogging and replaced if necessary. Repair
parts are available for trap cap retainer gasket and
strainer. See package outlines for mounting dimen
sions of moisture separator trap
The moisture trap must be primed by filling with
clean water prior to initial start-up of unit
5. Electrical — Check the unit and user-installed wiring
with the wiring diagrams furnished to be sure it is
properly wired See Section 4 "Controls and instru
ments' for general wiring diagrams and Section 2 for
installation instructions
6. Rotation — Check the motor rotation by momen
tarily starting the motor. Compressor drive shaft rota-
13-9-630
Section
tion is counterclockwise standing at the motor end
7. Operating Light Test– Observe the operating lights
on the ON-OFF switch when jogging the motor in
Step 6. Be sure all lamps are operative
8. System Pressure– Set the turn-valve pilot inlet pilot
and operating air pressure switch to the desired
unload pressure and differential DO NOT EXCEED
MAXIMUM OPERATING PRESSURE ON THE
COMPRESSOR NAME PLATE EXCEPT AS spec
IFIED UNDER "CONTROL ADJUSTMENTS' SEC-
TION 4.
9.
Operating Mode — Refer to Section 4 for detailed
information on the control system.
STARTING THE UNIT — The Constant Speed with Low
Demand Mode Unit requires only pressing of the OFF/
RESET and then the ON push button
The Automatic StarVTimed Stop with Low Demand Mode
Units require selecting the desired mode of operation (see
sectiOn 4) and then pressing first the RESET and then the
ON push button
OBSERVE UNIT COLD OR UNIT HOT STARTING PRO
CEDURES
Unit Cold — Close the air service valve (furnished by cus
tomer) between the main air system and the unit check
valve if the unit is a water-cooled heat exchanger model
open any manual water inlet wide open. Start the unit and
run for one minute. Open the air service valve Since the
unit is equipped with a minimum (65 PSIG) pressure dis
charge valve, no special procedure to maintain unit reser-
voir pressure is required
CAUTION
On Automatic Start- Timed stop Mode it is important
to open the service valve after 'starting and before the
set discharge pressure is reached to prevent the almost
immediate shutdown of the unit followed by a restart
which may cause motor overload heaters to overheat
and blow.
Unit Hot — No warmup period is required Close the air
service valve (furnished by customerj. If the unit is a water-
cooled heat exchanger model open any manual water inlet
valves wide open Start the unit Open the air service valve.
DAILY CHECK — Refer to Section 8 "Maintenance
Schedule".
STOPPING THE UNIT — Close the air service valve
(furnished by customer, allow the unit to build up to
full unloaded pressure and press the OFF push button
Stopping the unit at a pressure below full receiver may
cause oil carryover. The oil reservoir will automatically
blow down as the motor stops If the unit is a water-cooled
heat exchanger type close any manual water inlet valves
Open the air service valve
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