Nilfisk-ALTO 03KLU Operating and maintenance instructions, Installation, Servicing, Operation

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9.0 Operating and maintenance instructions

EN

 

 

GAST Air motor Type AM 8

9.1 Construction

Your air motor is a precision built rotary type motor. The vanes take up their own wear and will last 5,000-15,000 hours depending upon speed, met- hod of oiling, operating pressure, and the precau- tions taken in maintaining the motor. The type of shaft seal used does not lend itself to operating pressures above 100 Psi (6.89 bar metric).

9.2 Installation

Install a moisture trap and fi lter in the air line ahead of motor. For effi ciency of output and control of speed use air lines the same size or in the next pipe size larger than the intake port of the motor.

9.3 Lubrication - use a detergent SAE

10 or detergent with antifreezing additive.

For proper operation and maximum service life an automatic air line lubricator must be installed in the air line just ahead of the air motor. The lubricator should be adjusted to feed one drop of oil for every 50-75 CMF of air going through the motor.

Air consumption fi gures for various models at vari- ous speeds and air line pressures can be obtained from your local GAST representative or the factory. Lubrication is necessary for all internal moving parts and rust prevention.

Excessive moisture in the air line can cause rust formation in motor and might also cause ice to form in the muffl er due to expansion of air through the motor. The moisture problem can be corrected by installing a moisture separator in the air line and also by installing an aftercooler between the compressor and air receiver.

The speed and torque can be regulated by using a pressure regulator or a simple shut-off valve to obtain desired power and conserve air. It is very important that the air motor not be allowed to »run free« at high speeds with no load and improper lubrication. Running under these conditions can cause excessive internal heat build up, loss of internal clearances and rapid motor damage.

9.5 Servicing

If the motor is sluggish or ineffi cient try fl ushing with solvent*). To fl ush a unit, disconnect air line and muffl er and add several teaspoonful of solvent. Rotate the shaft by hand in both directions for

a few minutes, reconnect the air line and slowly apply pressure until there is no trace of solvent in exhaust air.

Flush unit in a well ventilated area. Eye protection is recommended. Keep face away from exhaust port and do not fl ush with fl ammable solvent. Relubricate the motor with a squirt of oil in the chamber.If the vanes need replacing or foreign ma- terials are present in motor chamber, an experien- ced mechanic may remove the end plate opposite the drive shaft end. Do not try with a screwdriver. It will dent the surface of the plate and body causing leaks. A puller tool should be used which will remove the end plate while maintaining the position of the shaft. New vanes should have the edge with the corners cut on angle or the notched edge (if reversible) towards the bottom of the vane slot.

Danger: To prevent explosive hazard do not drive this air motor with combustible gases.

*) Recommended commercial solvent for air motors and lubricated pumps is Gast Flushing Solvent part AH255, or any non toxic, non fl ammable industrial cleaning solvent.

9.4 Operation

The starting torque is less than the running torque and could vary depending on the position at which the vanes stop in relation to the air intake port.

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Contents 03KLU Copyright 2008/2009 Nilfisk-ALTO Guarantee CongratulationsIndex Owners responsibility Use in hazardous areasKey Photo 2603KLUWater connection ConnectionsStandard equipment Starting-up procedure OperationFrost proofing EN Operation EN StoppingMaintenance EN SafetyOperating and maintenance instructions InstallationLubrication use a detergent SAE ServicingModel 2603KLU Technical dataModel designation Diagnosis of faults and repair Fault Cause Repair Motor fails to startWorking pressure too low No working pressurePage Page Page Page Head Quarter

03KLU specifications

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