38
INSTALLATION
The correct rotation is pre-set at the Factory and is programed into the drive memory. If the main motor or
fan motor has been disconnected for any reason after factory assembly, rotation will need to be verified
prior to continued operation. To check rotation start the compressor briefly, bump, and observe the rotation.
The rotation should match the rotation indicated on the rotation decal located on the compressor. If rotation
is incorrect, turn off power to compressor and reverse any two of the three motor leads T1, T2, or T3.
4.9
COMPRESSED AIR SYSTEM
Connect to plant air system with a flexible connector with a minimum rating of
200
psi (13.8 bar) and
245°F
(
118
°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 additional 75 feet of hose in
runs exceeding ½-inch inside diameter 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.
Install a moisture separator as close to the compressor as possible on plane with the discharge of the cooler.
If a receiver tank is going to be utilized, a rule of thumb for sizing would be four gallons per horsepower. by
adding an air receiver tank in the system, the compressor will offer smoother operation through air demands.
It is also recommended that air enters the receiver tank at a lower port than that of the tank’s outlet port.
Additional equipment such as dryers and conditioning filters should be installed after the receiver tank, prior
to customer’s process.
It is always recommended to locate additional compressed air equipment as close to the compressor package
as possible. Keep in mind that pipe length and elbows, especially 90°, produce pressure drops which directly
impact the output performance to the customer’s process.
4.10
MULTIPLE MACHINE INSTALLATION
If the compressor is going to be installed in a sequence system with other compressors, special controls are
required to reduce the power cost.
4.11
STORAGE
If it is necessary to store the compressor for a long period of time, the following procedures are
recommended to avoid damaging the compressor:
»
Store the compressor package on a dry, solid surface.
»
Make sure all 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.
CAUTION!
Before putting the compressor package back into service follow all installation procedures.
Summary of Contents for UD Series
Page 6: ...vi About This Manual ...
Page 12: ...4 Introduction ...
Page 42: ...34 Component Description ...
Page 52: ...44 Operation ...
Page 66: ...58 Troubleshooting ...
Page 74: ...66 Parts Catalog 8 5 COMPRESSOR FRAME AND DRIVE ASSEMBLY Figure 8 1 AS801 25UD 50UD VFD R00 ...
Page 76: ...68 Parts Catalog 8 6 CONTROL ASSEMBLY OPEN Figure 8 2 1072190415 609 R00 ...
Page 78: ...70 Parts Catalog 8 7 STARTER ASSEMBLY ENCLOSED Figure 8 3 AS802 405060 PANEL R03 ...
Page 94: ...86 Parts Catalog 8 15 COOLING ASSEMBLY AIR COOLED Figure 8 11 AS804 50UDAC INLINE R00 ...
Page 100: ...NOTES ...
Page 101: ...NOTES ...