Kyungwon Compressor

기술자료

Item/Component	Nitrogen(N2)	Oxygen(O2)	Argon(Ar)	Carbon Dioxide(CO2)	Hydrogen(H2)	Neon(Ne)	Helium(He)	Others
Volume(%)	78.03	20.99	0.933	0.03	0.01	0.0018	0.0005	-
Weight	75.47	23.2	1.28	0.046	0.001	0.0012	0.00007	-

Name of Standard	Reference State	Flow Notation
ASME Power Test Code	68℉ 14.7psia RH 36%	S㎥/h Sℓ/min SCRM SCFH
Compressed Air Institute	68℉ 14.7psia DRY
atural Gas Pipeline Field	14.7psia - >Suction Temperature
Japan Industrial Standards (JIS)	20℃ 760mmHg RH 65%
Korean Industrial Standards ㉿	20℃ 760mmHg RH 65%

[Table of air injection volume in nozzle]

Name of Air Tool	Specification	Air Port	Air Consumption(㎥/min)	Appropriate Air Pressure(kg/㎠G)
ANGLE GRINDER	4 inch WHEEL	PT 1/4	0.6	6.0 - 6.5
ANGLE GRINDER	7 inch WHEEL	PT 3/8	1.5	6.0 - 6.5
Grinder	11-1/2 inch WHEEL	PT 1/4	0.3	6.0 - 6.5
SCREW DRIVER	12 - 4	PT 1/8	0.28 - 0.32	6.3 - 6.5
SCREW DRIVER	15 - 6	PT 1/4	0.3 - 0.5	6.3 - 6.5
IMPACT WRENCH	116	PT 1/4	0.5	6.3 - 6.5
IMPACT WRENCH	132	PT 1/2	0.9	6.3 - 6.5
Air Drill	1￠10	PT 1/4	0.5 - 0.7	6.3 - 6.5
라Ratchet Wrench	112	PT 1/4	0.5	6.3 - 6.5
SANDER	1PAD SIZE 100 x 175	PT 1/4	0.6	6.3 - 6.5
Polisher	1￠205	PT 1/4	0.8	6.3 - 6.5

Note: Air tools of Daewoo Precision (88)

[Table of Equivalent Length for Attached Materials]

Pipe Fittings		Correction Length	Valves		Correction Length
90℃ Elbow	d=3/8＂~ 21/2＂ d=3＂~ 6＂ d=7＂~ 10＂	30times d 40times 50times	Globe Valve	d=1＂~ 21/2＂ d=3＂~ 6＂ d=7＂~ 10＂	45times d 60times 75times
90℃ Band 45℃ Elbow T Fitting + Fitting	R/d = 3 ~ 5 d = 1＂~ 3＂	10~20times d 15~20times 40~80times 50times	Butterfly Valve	100% open 75% open 50% open 25% open	0times d 10times 100times 900times
90℃ Band 45℃ Elbow T Fitting + Fitting	R/d = 3 ~ 5 d = 1＂~ 3＂	10~20times d 15~20times 40~80times 50times	90℃ Angle Valve	100~120times pipe diameter d

[Table for Selection of Pipe Diameter]

[Value of Friction Coefficient f of Air Flowing in the Pipe]

Inner Diameter of Pipe	f	Inner Diameter of Pipe	f	Inner Diameter of Pipe	f	Inner Diameter of Pipe	f
25.4	0.01242	228.6	0.00378	431.0	0.00327	635.0	0.00309
50.8	0.00756	254.0	0.00367	457.2	0.00325	660.4	0.00307
76.2	0.00594	279.4	0.00358	482.6	0.00321	685.8	0.00306
101.6	0.00513	304.8	0.00351	508.0	0.00319	711.2	0.00304
127.0	0.00464	330.2	0.00345	533.1	0.00316	736.6	000304
152.4	0.00432	355.6	0.00340	558.8	0.00314	762.0	0.00302
177.8	0.00409	381.0	0.00335	584.2	0.00312
203.2	0.00392	406.4	0.00331	609.6	0.00310

[Resistance Length of Pipe Fittings]

Fittings		n	Valves		n
90℃ Elbow	d=3/8＂~ 21/2＂ d=3＂~ 6＂ d=7＂~ 10＂	30 40 50	Globe Valve	d=3/8＂~ 21/2＂ d=3＂~ 6＂ d=7＂~ 10＂	45 60 75
Standard90℃ Band Elbow 45℃ Elbow T Fitting +-shaped Fitting	R/d = 3 ~ 5 d = 1＂~ 3＂ d = 1＂~ 3＂	10~20 15~20 15~20 40~80 50	Butterfly Valve	Fully open 3/4open 1/2open 1/4open	0 10 100 900
Standard90℃ Band Elbow 45℃ Elbow T Fitting +-shaped Fitting	R/d = 3 ~ 5 d = 1＂~ 3＂ d = 1＂~ 3＂	10~20 15~20 15~20 40~80 50	90℃ Angle Valve		100~120

Operation Sequence	Precaution
Check connection of power and grounding, and make sure that voltage is within the regulated value.	Prevent malfunctioning by connecting power grounding to the ground surface.
Supply lubricant until it reaches upper limit of oil level gauge.	When lubricant becomes insufficient after starting the device as it flows into oil cooler, stop the compressor and check that pressure reaches 0kgf/㎠(G) before resupplying oil.
Check tension on V-belt (in case of motor V-belt type).	Check suspension of power.
Supply cooling water to cooler (in case of water-cooling type).
Stop (power) lamp is turned on when power is supplied.	In case of reverse phase, reverse phase relay is operated to turn “reverse power phase” lamp on. The compressor cannot be operated.

Operation Sequence	Precaution
Completely open the discharge valve and press start button.	Pressure suddenly rises when the machine is started with the valve closed.
During no-load operation, slowly close the discharge valve at discharge pressure of 4kg/㎠(G).	If discharge pressure is higher or lower than 4kg/㎠(g) when the discharge valve is completely open, adjust holding pressure valve.
	Check vibration, noise and oil leak.

Operation Sequence	Precaution
Allow discharge pressure to reach discharge pressure in the specification. Check the meter values under full load operation.	When no-load operation starts, pressure inside oil separation tank is discharged to reduce discharge pressure (inside unit). No-load operation is carried out while maintaining discharge pressure of 1~2.5kg/㎠(g).
Pull the safety valve ring to check its operation. (Open the inspection door on the front of package or inspection hole on the side)	Setting pressure of safety valve is as follows. For 7.0kg/㎠(g) specification: 8.5kg/㎠(g) For 8.5kg/㎠(g) specification: 9.5kg/㎠(g) For 9.5kg/㎠(g) specification: 9.9kg/㎠(g)

Operation Sequence	Precaution
Press stop button.	As soon as the motor stops, auto air discharge valve discharges compressed air from oil separation tank to the atmosphere, which generates a sound for about 30 seconds.
Make sure that pressure gauge indicates 0kg/cm2 (g) after the machine comes to a stop.

[ Test standards for compressor in KS ]

Name of Standard	Standard No.	Test Conditions
Testing and inspection methods for volumetric compressor	KSB 6351	Repetitive and rotary compressor with pressure ratio of 2 or higher suction temperature 20°C, suction pressure 101.3kPa, relative humidity 65%
Testing and inspection methods for turbo type blower and compressor	KSB 6350	Turbo type ventilator and compressor with pressure ratio of 1 or higher suction temperature, suction pressure and relative humidity same as above