14
4.1
FIRST START
Installation of the compressor will have been carried out in accordance with Section 3 of this manual.
The Commissioning Engineer should however ascertain that the correct procedures have been
followed, in particular the coupling alignment must be checked, then proceed as follows:
1.
Disconnect the coupling between the drive and the compressor and check that the direction
of rotation is correct to drive the compressor in a clockwise direction, looking on the
compressor input shaft. (Anti-clockwise if compressor MRV model).
2.
3.
Fill the oil tank with lubricating oil of the correct grade to the required level as indicated on
the tank level sight glass.
4.
Ensure that the manifold and oil pipes to the compressor are clean then start the lubricating
pump motor to circulate the oil and clean the system.
5.
The lubricating oil pressure differential control valve should be set to give a 30 psi (2 kg/cm²)
oil manifold differential pressure for a standard range compressor and 40 psi (2.7 kg/cm²) oil
manifold differential pressure for an ‘H’ designated compressor at correct operating
temperature, with clean oil filter elements fitted.
6.
Check the operation of any safety trips fitted by running the drive unit disconnected from the
compressor and mechanically operating the trips, check that the actual settings are in
accordance with the contract specification. The lubricating oil differential pressure trip can
be set at 12 psi (0.85 kg/cm²) on a standard range compressor and 22 psi (1.54 kg/cm²) on
‘H’ designated compressors by partially closing the oil filter outlet isolation valve and thereby
reducing the differential oil pressure. As the filters become dirty the differential oil pressure
will drop to these figures, which are the minimum accepted value.
7.
Check that the compressor turns freely by hand and reconnect the coupling between the
drive unit and the compressor.
8.
Check that the cooling water is turned on to the lubricating oil cooler, if fitted.
9.
Check that all gas inlet and outlet isolating valves are open.
10.
Start the lubricating oil pump motor.
NOTE:
The compressor should be unloaded prior to start up. If the compressor is started
without first being unloaded a higher starting torque will be required.
11.
Start the drive unit and check that all gauges are indicating correctly.
12.
Run the compressor for 30 minutes at minimum gas flows and check that all readings are
normal, then operate the capacity control valve to the required position. This position will be
indicated on the dial mounted on the hydraulic cylinder.
13.
If possible, check the slide valve control over the full range of capacity.
Summary of Contents for WRV
Page 1: ...WRV WRVi COMPRESSOR RANGE SERVICE MANUAL...
Page 3: ...2 SECTION 1 FOREWORD...
Page 5: ...4 HOWDEN SECTION 2 DESCRIPTION...
Page 10: ...9 SECTION 3 INSTALLATION...
Page 14: ...13 SECTION 4 FIRST START UP...
Page 16: ...15 SECTION 5 NORMAL OPERATION...
Page 18: ...17 SECTION 6 PROCEDURES DURING SHUTDOWN...
Page 20: ...19 SECTION 7 MAINTENANCE...
Page 33: ...32 SECTION 8 OVERHAUL...
Page 50: ...49 SECTION 9 SPECIAL INSTRUCTIONS...
Page 57: ...56 SECTION 10 SPARES...
Page 64: ...63 Printed in the UK Issue HCL September 2012 Howden Compressors Limited...