Scroll Air Compressors Tankmount/Basemount
Installation
RECEIVING THE UNIT
Immediately upon receipt of the scroll compressor, the unit should be inspected for any damage which may have occurred in shipment. Any shipping damage must be immediately filed with the freight carrier.
The compressor nameplate should be checked to see if the unit is the correct model and voltage as ordered.
APPLICATION
When the scroll compressor is to be used in applications other than the compressing of atmospheric air, please contact a Powerex representative for engineering and warranty information at
INSTALLATION SITE
1.The scroll compressor must be locat- ed in a clean, well lit and well venti- lated area.
2.The area should be free of excessive dust, toxic or flammable gases, mois- ture, water and direct sunlight.
3.Never install the compressor where the ambient temperature is higher than 104o F or where humidity is high.
4.Clearance must allow for safe, effec- tive inspection and maintenance.
Minimum Clearances
Above | 24” |
Drive belt side | 12” |
Other sides | 20” |
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5.If necessary, use metal shims or leveling pads to level the compressor. Never use wood to shim the compressor.
VENTILATION
1.If the scroll compressor is located in a totally enclosed room, an exhaust fan with access to outside air must be installed.
2.Never restrict the cooling fan exhaust air.
3.Never locate the compressor where hot exhaust air from other heat gen- erating units may be pulled into the unit.
WIRING
Refer to the general product manual. All electrical
Use solderless terminals to connect the electric power source.
PIPING
Refer to the general product manual.
1.Make sure the piping is lined up without being strained or twisted when assembling the piping for the scroll compressor.
2.Appropriate expansion loops or bends should be installed at the com- pressor to avoid stresses caused by changes in hot and cold conditions.
3.Piping supports should be anchored separately from the compressor to reduce noise and vibration.
4.Never use any piping smaller than the compressor connection.
5.Use flexible hose to connect the out- let of the compressor to the piping so that the vibration of the compressor does not transfer to the piping.
SAFETY VALVES
Tank mounted compressors are shipped from the factory with safety valves installed in the tank. The flow capacity of the safety valve is equal to or greater than the capacity of the compressor.
1.The pressure setting of the safety valve must be no higher than the maximum working pressure of the tank.
2.Safety valves should be placed ahead of any possible blockage point in the system, i.e. shutoff valve.
3.Avoid connecting the safety valve with any tubing or piping.
4.Manually operate the safety valve every six months to avoid sticking or freezing.
Operation
BEFORE START UP
1.Make sure all safety warnings, labels and instructions have been read and understood before continuing.
2.Remove any shipping materials, brackets, etc.
3.Confirm that the electric power source and ground have been firmly connected.
4.Be sure all pressure connections are tight.
5.Check to be certain all safety relief valves, etc., are correctly installed.
6.Check that all fuses, circuit breakers, etc., are the proper size.
7.Make sure the inlet filter is properly installed.
8.Confirm that the drain valve is closed.
9.Visually check the rotation of the compressor pump. If the rotation is incorrect, have a qualified electrician correct the motor wiring.
1.Follow all the procedures under “Before
2.Switch the electric source breaker on.
3.Open the tank discharge valve com- pletely.
4.Check that the compressor operates without excessive vibration, unusual noises or leaks.
5.Close the discharge valve completely.
6.If the pressure does not rise on a three phase unit, turn the unit off. Have a qualified electrician switch the breaker OFF and exchange the L1 and L2 connections (two out of three phases of electric source) inside the magnetic starter enclosure.
7.Check the discharge pressure. Also make sure the air pressure rises to the designated pressure setting by check- ing the discharge pressure gauge.
8.Check the operation of the pressure switch by opening the tank outlet valve and confirming the compressor starts as pressure drops.
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