26
INSTALLATION
After the electrical installation has been completed, it is necessary to check the motor rotation. To check
the rotation,This will start the motor briefly to observe the rotation. The rotation of the
drive coupling
should match the rotation indicated by the rotation decal located on the compressor. If the rotation is
incorrect, cut off power to the compressor and reverse any two of the three incoming leads L1, L2 or L3.
4.9
COMPRESSED AIR SYSTEM
Connect to plant air system with a flexible connector rated for 200 psi (13.8 bar) and 245°F (135°C).
Piping should be large enough in diameter to minimize pressure drop. Support piping so that stress is not
transmitted to the compressor. Mount the pipe supports independent of the compressor to limit vibration
and prevent expansion strain. A loop system is recommended, with all piping sloped to accessible drop
legs and drain points. Install an appropriate flow-limiting valve for each addtional 75 feet of hose in runs
exceeding .50 inch inside diamater to reduce pressure in case of hose failure. Flow-limiting valves are
listed by pipe size and CFM. Select appropriate valves accordingly.
WARNING!
Never use plastic, PVC, ABS pipe or rubber hose in a compressed air system.
Next should be a receiver tank sized four gallons per horsepower to allow smooth operation of the
compressor’s controls. Compressed air should enter the receiver tank at a lower connection point than the
air out connection and not on plane. Dryer and associated conditioning filters should be next as needed.
Locate as close as practical to where the compressed air is to be utilized to save piping, use a minimum
number of 90° fittings, reduce loss of cfm and reduce power requirements necessary to transmit
compressed air.
4.10
MULTIPLE MACHINE INSTALLATION
For multiple machine installation, contact the factory for special sequencing controls that can reduce
power cost during part-load operation.
4.11
STORAGE
If it is necessary to store the compressor for a long period of time, the following procedures are recom-
mended to avoid damaging the compressor.
Store the compressor package on a dry, solid surface. Make sure all the air and electrical connections are
disconnected or locked out. Top off all fluid levels, and cover the compressor package with a waterproof
tarpaulin that can be easily removed for in-storage maintenance.
While in storage, rotate the compressor shaft every six months to make sure the bearings stay lubricated.
Remove the coupling guard to access the coupling. Some models have a cover on the coupling guard that
can be removed. Turn the coupling by hand two to three revolutions.
CAUTION!
Before putting the compressor package back into service, put the coupling guard back on, and follow all
INSTALLATION procedures.
Summary of Contents for SP20
Page 12: ...4 Introduction ...
