CompAir EO40/0001, User Manual

page 27

V100-VL400 User Manual – Operation

1.2 Functional Checks

1.

Insert the isolator fuses and switch on the

power supply to the compressor.

2.

Hand unload each 1st stage cylinder of the

compressor by moving the spring loaded cam

levers to the valve unloaded position.

3.

Open cooling water valves to water-cooled

intercooler and aftercooler, if fitted and open

the intercooler vent/drain cock. Close the cock

when a full, air-free flow emerges.

4.

Check the direction of rotation of the motor by

observing the direction in which the motor

kicks over when started. This may be

conveniently done by removing the clip-on

inspection panel in the top of the flywheel

housing and viewing the drive coupling. Correct

rotation is clockwise viewed from the motor

end of the compressor, as indicated by the

direction arrow on the housing.

Check for correct rotation of the fan motor on

the air blast aftercooler, if fitted. If rotation is

incorrect, stop the compressor immediately,

switch off the power supply at the isolator and

rectify the cable connections.

5.

When the direction of rotation is correct, start

the compressor and allow to run for 10 - 15

minutes in the unloaded condition. Check that

the oil pressure is more than 1.7 bar, settling

to 1.7 bar when the compressor reaches

operating temperature.

6.

On lubricated compressors only, close the

hand unloaders and run the compressor for a

further 10 - 15 minutes to clear all traces of

inhibitor from the cylinders.

7.

Stop the compressor .

8.

Connect the air delivery manifold flange to the

air receiver.

9.

Move the hand unloaders to the valve unloaded

position, start the compressor and when it is

running evenly close the hand unloaders.

10. Run the compressor on load with a receiver

valve open to maintain the running loaded

condition until full operating temperature is

reached (approximately 20 minutes from cold).

11 . Check the setting of the switching

thermometers as follows:-

Using the trip needle adjusting knob on the

face of each thermometer, set the trip needles

to 15°C above the normal running temperatures

indicated.

Note:

 The minimum oil pressure switch is

preset at 1 bar and should not require

adjustment.

12. Check the complete installation for leaks and

excessive temperatures.

13. Close the receiver valve and check that the

compressor runs correctly under the influence

of the air governor or pressure switch. If

adjustment is necessary , refer to section

below headed 'Adjustments'.

14. Run the compressor for 1 hour, checking

continually for correct loading and unloading,

temperatures and pressures. Record

temperature and pressure readings to provide a

basis for assessing future performance.

1.3 Routine Starting

1.3.1 Air Governor Control

1.

Check crankcase oil level.

2.

Operate hand unloaders on 1st. stage cylinder

heads.

3.

Open cooling water flow, if applicable.

4.

Switch the power supply 'ON' at the isolator

and operate starter.

5.

When the compressor is running steadily,

close hand unloaders.

1.3.2 Optional Control Panel

1.

Check crankcase oil level.

2.

Operate hand unloaders on 1st. stage cylinder

heads.

3.

Open cooling water valves, if applicable.