M A I N T E N A N C E S C H E D U L E
1. Check oil level and pressure on 1 hp (0.75 kW) and
larger compressors. See LUBRICATION paragraph.
2. Drain water from tank or check automatic drain
operation. See DRAINING TANK paragraph.
3. Check tank and pressure relief valve (prv) pressure.
See PRESSURES paragraph.
4. Observe operation to confirm that pumps build up to
cut-off pressure and shut off. See OPERATIONAL
EVERY THREE MONTHS
1. Change oil. See LUBRICATION paragraph.
2. Check intake filters. See AIR INTAKE FILTER para-
3. Drain water from tank and filter bowls. See DRAIN-
ING TANK paragraph.
4. Check tension and condition of belts. See BELTS
5. Check sequential operation. See OPERATIONAL
6. Check safety relief valves. See SAFETY RELIEF
7. Check filter cartridge on 7-l/2 hp (5.6 kW) only. See
FILTER CARTRIDGE paragraph.
intake filters. See AIR INTAKE FILTER
prv filter on 7-l/2 hp (5.6 kW) only. See
FILTER CARTRIDGE paragraph,
3. Service motors. See LUBRICATION paragraph.
*Dirty operating environment may require changing these
items more often. The three-month checks will uncover
any need for more frequent replacement.
L U B R I C A T I O N
Quincy units use splash lubrication on the 1/3 to 3/4
hp (0.25 to 0.56 kW) units and pressurized lubrication
on 1 hp to 7-l/2 hp (0.75 to 5.6 kW) units, Stop both
pumps, remove and wipe off dipsticks; reinsert dipsticks;
remove again and read. If necessary, add oil through dip-
stick port. Use oil in accordance with Table 1. A high
quality, nondetergent automotive oil is satisfactory
On 1-hp (0.75 kW) units and larger, in addition to
checking oil level, check the oil pressure gage. Gage read-
ing should be in the 10 to 20 lb/in 2 (70 to 140 kPa)
range. Recommended operating pressure is 15 lb/in 2
To change oil, stop both units.
Personal injury could result from starting a unit
not containing oil.
Remove the drain plug and dipstick and allow oil to
drain completely. Ordinarily, a crankcase need not be
flushed. If flushing seems necessary, use a nonflammable
solvent (available at most auto parts stores). Replace
plug and refill according to Table 2. DO NOT OVER-
FILL! Overfilling causes excessive oil consumption and
contamination of the compressed air.
Lubricate the motor annually in accordance with
instruction on nameplate.
Table 2. Compressor Oil Requirements.