background image

 

 

 

2.2 Working System 

Ambient air, which must be free from exhaust fumes, is drawn through the intake filter and inlet valve 
into the 1st stage cylinder, where it is pre-compressed. 

A portion of the compression heat is dissipated through the valve head, piston, cylinder, crankcase and 
lubricating oil to the cooling airflow. The larger portion remains in the compressed air and cooled down 
in the following intercooler to a few degrees above ambient temperature. The air is then passed on to 
the next stages, where it is compressed in the same way. The after cooler cools the air to 10

C above 

ambient temperature at the maximum. 

Operating temperatures are:  

inlet nipples of suction valves approximately 15

o

 -  20

o

 C above ambient temperature (hand warm); 

outlet nipples of pressure valves and valve heads approximately 90

o

 - 105

o

 C. 

Each stage incorporates an independent preset safety relief valve. 

 

 

The intake air always contains a certain amount of humidity depending on the weather. During 
compression and the consequent cooling down, this humidity largely condensates and forms the 
condensate together with small particles of lubricating oil. This condensate is a milky fluid and 
precipitates in the separators. 

 

 

2.3 Technical details of the compressor Block 

 

2.3.1 Crankcase, crankshaft, piston, cylinder

 

The crankcase is made of light alloy; the bearing cover is sealed by means of an O-ring. The crank- 
shaft, connecting rods and piston pins all incorporate roller bearings and grooved ball bearings. The 
connecting rods are mounted on the single throw of the crankshaft. 

The pistons of the 1st and 2nd stage are made of light alloy and incorporate piston rings. 

The 3rd stage piston is a free-floating piston with piston rings.  The free-floating piston is driven by a 
guide piston, the lateral surface of which is flattened to improve the lubrication of the free piston. The 
cylinders are made of cast iron. 

 

2.3.2 Valve heads, valves, intercoolers, separators, filters

 

The valves are screwed into the well-ribbed valve heads. Valves are arranged side by side and can be 
removed by a valve key. 

Maintenance of the pressure valves can be carried out from outside, the suction valves can only be 
removed after removal of the valve heads. Torque for tightening the valve head screws of the 3rd 
stage: start with 1 kpm (7ft.-lb), finish with 2,2 kpm (16 ft.-lb) ensure yourself that piston is down into the 
cylinder. 

 

 

 

 

Page 3 of 22

Содержание 90 PBAC

Страница 1: ...vice max air com Max Air is a registered trademark with the U S patent office copyright 2006 This manual cannot be reproduced without the express written permission of Max Air WARNING DO NOT USE WITH...

Страница 2: ...lling compressor you are now a filling station You must follow all local state and federal regulations Prior to filling a cylinder check the pressure rating and current hydro date stamped on cylinder...

Страница 3: ...e year from purchase date Weight 276 lbs 125kg w 9 HP Honda engine Dimensions 42 L x 20 W x 28 5 H MAX AIR 90 9 0cfm TECHNICAL DESCRIPTION Model Approx output MAX AIR 90 260 L min 9 0cfm Drive motors...

Страница 4: ...small particles of lubricating oil This condensate is a milky fluid and precipitates in the separators 2 3 Technical details of the compressor Block 2 3 1 Crankcase crankshaft piston cylinder The cran...

Страница 5: ...and optimum separation 2 4 Base Frame Protective Frame Covers Depending on the specifications of the buyer the compressor rests on a base frame consisting of welded section steel with an additional f...

Страница 6: ...or disconnect at the power source prior to any work Never weld high pressure tubing Never empty air cylinders completely The closed cylinder should always contain some residual pressure in order to av...

Страница 7: ...set pressure relief blow off on the final stage is usually 10 above the cylinder rated pressure Example if you are filling a 3000 psi rated cylinder you should close the fill valve or shut off the com...

Страница 8: ...with fresh oil at least once a year 4 7 Maintenance and air tightness test Besides the standard stipulated service works 4 8 we recommend you clean the compressor at regular intervals to notice any o...

Страница 9: ...e sure that the holding spring on top is installed properly Only use original cartridges 4 8 5 Condensate drain system Condensate water oil vapors emulsion The color of this emulsion should be milky w...

Страница 10: ...be carefully treated to prevent even the slightest damage Use only gasoline soft brushes of copper or nylon Do not use steel brushes screwdrivers etc Should you detect even the smallest damage rupture...

Страница 11: ...ty valves must be replaced as complete parts 4 9 1 Cylinders When removing and replacing cylinders note that the piston is in the top position must be on the same level with the cylinder top edge Corr...

Страница 12: ...w thread max hex screw M 6 1 0 kpm 7 ft lbs inner hex Screw hex screw M 8 2 5 kpm 18 ft lbs inner hex Screw hex screw M 10 4 5 kpm 32 ft lbs inner hex screw Valve head screw requires torque wrench tig...

Страница 13: ...rrect Blocked cooling tubes or Tighten or replace gaskets leaking Check brush with soap replace Intake filter blocked Replace Intake hose bent Readjust Worn pistons or rings Replace Oil taste in deliv...

Страница 14: ...elief valve factory preset to customer requirement 11 Front bearing cover 22 Check valve INSIDE upper separator 12 Fan wheel 23 Oil fill vent cap screw 13 Oil filler cap 24 Oil level indicator behind...

Страница 15: ...n fold back flat prior to screw down housing cap C Read and remove tape c D Remove snap out plastic plug under tape E Remove plastic plug make sure internal O ring is present and lubricated use silico...

Страница 16: ...H E Close up view of plastic plug E at bottom of cartridge B C D I J F G B C D E K H 27 x 2 dia E A Sealed Foil envelope not shown Part Number LF 65247 35 000 cft 72o F 5000psi Page 15 of 22...

Страница 17: ...d for any sign of moisture F Warning label read and understand this and any labels on the filter G Molecular sieve beige beads removes humidity H Hopcalite catalyst converts trace amounts of carbon mo...

Страница 18: ...14 1 4 x 1 3 4 dia A C E G I B D F H J Part Number LF 1002 10 000 cft 72o F 5000psi NOTE Dimensions exclude threaded plastic nipple w O ring Page 17 of 22...

Страница 19: ...s USAGE The detection disc is specially treated to prolong its life A color change from tan to dark grey will occur in the presence of carbon monoxide The rate if change of color is directly related t...

Страница 20: ...ly 4 Install window 3 with smooth small diameter against O ring 4 5 Insure window 3 is fully against shoulder of cap 2 6 Avoid spring or other hard objects touching window 7 Install so both elements c...

Страница 21: ...ING BLUE Page 20 of 22 Remove top half of element housing and invert Place the blue moisture indicator down inside element against the glass taking care not to touch the blue element with your fingers...

Страница 22: ...be carried out in compliance with the instructions contained in this manual Should the required work not be covered by the manual or assistance be required you are advised to contact Max Air directly...

Страница 23: ..._______ _________________________________________________________________________________ _________________________________________________________________________________ ____________________________...

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