ADJUSTMENT
PROCEDURES
(SWITCHES
WITH
DIFFERENTIAL
ADJUSTMENT
CONTROL):
1. Remove the pressure switch cover.
• WARNING
2. Set the cut-in pressure with the range adjustment nut. Turn
the nut clockwise (in) to increase the pressure or counte_
clockwise
(out) to decrease the pressure
NOTE:
One full turn changes
the setting
NOTE
approximately
2 PSIG
3. Set the cut-out pressure
with the differeof_al adjustment. Turn
the differential
adjustment
nut clockwise (in) to increase (he
pressure or counter-clockwise
(out) to decrease
the
pressure.
NOTE:
One full turn changes
the setting
approximately
2 PSIG.
4. Replace the cover, reconnect
the power supply and start
NOTE
the unit.
5. Note the pressure gauge reading at which the unit cuts out.
6. Repeat the adjustment
procedure If necessary
The minimum possible differential
is approximately
20% of
cutout pressure
Itisadvisabletohaveaswideadifferentia_as
NOTE
possible to avoid frequent starting and stopping of the unit
Note the pressure gauge reading at which the unit cuts-out and
reestablish
this point d necessary
NOTE
Note the interaction between the range and differential
adjustments,
ie,
if the euFout is increased, the differential will
also increase,
or if the differenbal
is narrowed, the cuFout will
be reduced,
etc. These factors must be considered
when
adjusting the switch and compensated
for accordingly
OIL CONSUMPTION
CHECK
A rule of thumb in determining
a =passing grade' for oil
consumption
is to consider consumption at or above
50 horsepoweFhours
per ounce to be acceptable
The formula
is as follows:
Horsepower
×
HoursofOperation
-
HorsepowerHours
Ounces
of Oil Used
per
Ounce
Teapplythisfomlu_a,considerthesizeofthemachine
Inthe
following
example, a 5 horsepower
compressor
uses 2 ounces
of oil every 20 hours of operafJon
5 Horsepower
X
20 Hours
of
-
50 Horsepower
Operation
Hours
per Ounce
2 Ounces
of Oil Used
The compressor
in the example passes the oil consumption
test.
NOTE
New or rebuilt compressor
pumps will
discharge
higher than normal
amounts of
oil until the piston rings are seat_:l
(approximately
100 operating
hours).
Before performing
maintenance,
release
air pressure from the system and
disconnect,
iock and tag the main power
supply.
All compressed
air systems contain
maintenance
parts (e.g. lubricating
oil,
filters, separators)
which are periodically
replaced.
These used parts may be, or
may contain, substances
that are
regulated
and must be disposed
of in
accordance
with lOCal, state, and federal
laws and regulations.
Take note of the positions
and focations
of parts during disassembly
to make
reassembly
easier. The assembly
sequences
and parts illustrated
may differ
for your particular unit.
Any sel_'ice operations
not explained
in
this manual
should be performed
by an
authorized
se_'ice
representative.
The following
maintenance
schedule
has
been developed
for typical applications.
Maintenance
intervals
should be
shortened
in harsher environments.
MAINTENANCE
SCHEDULE
Check for oil leaks.
Daily or
Check lubncant level Fill as needed
Before
Test drain valve for proper operation
Each
Clean if needed
Operation
Drain receiver tank condensate
(if
automatic
draining device is not provided)
Open manual drain valve and COllect and
dispose of condensate
accordingly.
Cheek for unusual noise and vibration
Ensure beltguards
and covers are
securely in place
Ensure area around compressor
is free
from rags, tools, debris, and flammable
or
explosive materials.
Weekly
Observe operation of safetyirelief
valves
while the oompressor
is runmn9 Replace
safety/relief
valves that do not operate
Ireal_
Inspect air filter element(s).
Clean if
necessary.
Mon_ly
Inspect for air leaks
Squirt soapy water
around joints during compressor
operation and watch for bubbles.
Clean drain valve.
Check Lightness of screws and bolts.
]3ghten as needed.
Inspect drive belts Adjust if necessary.
Clean exterior.
3/500 *
Change petroleum
lubdcant while
crankcase is warm.
Drain compressor
oil and clean oil
sight glass
Replace filter element.
12/2000 *
Change synthetic
lubricant while
crankcase
is warm
• indicates months/operating
hours, whichever occurs first
TS4 STATIOnARy ELEOTr_IUCJ,_N 162C_3)
B,,GLISH