
16
INSTALLATION (CONT’D)
Wiring must be such that when viewing compressor from opposite shaft end, rotation of shaft is
clockwise as shown by arrow on guard. Wrong direction rotation for any length of time will
result in damage to compressor.
GROUNDING INSTRUCTIONS
This product should be connected to a grounded, metallic, permanent wiring system, or an equipment-
grounding terminal or lead on the product.
OPERATION
This compressor has been inspected, thoroughly tested and approved at the factory. For this unit to give
long satisfactory service it must be installed and operated properly. This compressor has been designed for
a 80%/ON
– 20%/OFF duty cycle.
Duplex units have lead and lag pressure switches and an automatic alternating system to evenly distribute
the load between the two compressors. The pressure switches sense changes in receiver pressure and
automatically start and stop the compressor at preset pressure levels. If the receiver pressure falls below the
cut-in pressure setting of the lead pressure switch but remains above the cut-in pressure setting of the lag
pressure switch, only one compressor will run until receiver pressure reaches the cut-out pressure of the
lead pressure switch. The next time the pressure in the receiver drops, the system automatically starts the
compressor that was idle. If the receiver pressure falls below the cut-in pressure setting of the lag pressure
switch, both compressors run until receiver pressure reaches the cut-out pressure setting of the lead
pressure switch.
To manually set lead compressor, set Auto-Comp1-Comp2 switch to Comp1 or Comp2 for corresponding
compressor to be lead.
To disable power to a compressor set its corresponding disconnect switch to off, set it corresponding TOA
switch to off and set the Auto-Comp1-Comp2 to the opposite compressor.
Initial Start Up
1. Inspect unit for any visible signs of damage that would have occurred in shipment or during
installation.
2. Pull main disconnect switch to unit to assure that no power is coming into the unit.
“Lock Out” or
“Tag Out” switch. Verify voltage corresponds to unit specifications.
Do not attempt to operate compressor on voltage other than that specified on order or on
compressor motor.
3. Check compressor oil level. Add oil as required. See
“Compressor Oil Specifications” Section.
NOTE
: Do not mix oil type, weights or brands.
4. Activate main disconnect switch.
4.
“Jog” motor and check for proper rotation by direction arrow. If rotation is wrong, reverse input
connections on the magnetic starter.
5. Close discharge valve and start.
6. With discharge valve closed, let machine pump up to operating pressure. At this stage the
automatic controls will take over. Check for proper cycling operation.
7. Check for proper operation of any options. Refer to individual option instruction sheet.
8. When the initial run period has shown no operating problems, shut unit down and recheck oil level.
9. Open discharge valve. The air compressor unit is now ready for use.
This unit can start automatically without warning.
Содержание CADRSASP12
Страница 10: ...9 FIGURE 1 DUPLEX CONTROL PANEL WIRING DIAGRAM ...
Страница 12: ...11 INSTALLATION CONT D CIRCUIT BREAKERS 1 Factory wired No wiring required Figure 3 Circuit Breaker ...
Страница 13: ...12 INSTALLATION CONT D MOTOR CONTACTORS 1 Factory wired No wiring required FIGURE 4 MOTOR CONTACTORS ...
Страница 15: ...14 INSTALLATION CONT D LOW OIL LEVEL MONITOR 1 Factory wired No wiring required FIGURE 6 LOW OIL LEVEL MONITOR ...
Страница 16: ...15 INSTALLATION CONT D ELECTRIC TANK DRAIN 1 Factory wired No wiring required FIGURE 7 ELECTRIC TANK DRAIN ...
Страница 25: ...24 PARTS ILLUSTRATION MODEL CADRSASP12 307CAD810 A Ref Drawing ...
Страница 27: ...26 DUPLEX CONTROL PANEL MOUNTING 305CAD810 A Ref Drawing ...
Страница 39: ...38 UNIT HAZARD DECALS ...
Страница 40: ...39 PUMP HAZARD DECALS F ...