2-2
“Oil-Less” Scroll Laboratory Air
4107 9006 25.11
2.4 Space Requirements
Scroll Laboratory Air systems should be placed
to ensure easy access to perform maintenance
and high visibility of indicators and gauges. It is
recommended that a minimum space of 24” be
allowed on all sides of the compressor system for
ventilation and maintenance. A minimum space
of 36” in front of the control panel is required by
NEC code. A vertical distance of 36” is required
above the unit for ventilation and maintenance.
2.5 Piping
2.5.1 Discharge Piping
Table 2.1 Minimum Discharge Pipe Size
1
LifeLine Units
Pipe Size
Duplex 2 Hp
¾
Duplex 3 Hp
¾
Duplex 5 Hp
¾
Duplex 7.5 Hp
¾
Duplex 10 Hp
1
Duplex 15 Hp
1
Triplex 5 Hp
1
Triplex 7.5 Hp
1
Triplex 10 Hp
1
Triplex 15 Hp
1¼
Quad 5 Hp
1
Quad 7.5 Hp
1¼
Quad 10 Hp
1¼
Quad 15 Hp
1½
Pentaplex 10 Hp
1
½
Pentaplex 15 Hp
1½
Hexaplex 10 Hp
1
½
Hexaplex 15 Hp
1½
1
A larger discharge pipe size may be
required depending on the length of
distribution piping in the facility. However,
the distribution pipe size should not be less
than the minimum pipe size shown above.
For discharge pipe sizing, refer to standard pressure
drop tables. Total pressure drop in piping should
not exceed 5 psi.
2.6 Wiring
WARNING:
BE SURE TO DISCONNECT ALL ELECTRICAL
POWER FROM THE COMPRESSOR
BEFORE PERFORMING ANY ELECTRICAL
PROCEDURES.
Refer to the electrical diagram provided with
the unit before starting any installation or
maintenance work.
Do not operate compressor on a voltage other
than the voltage specifi ed on the compressor
nameplate.
All customer wiring should be in compliance
with the National Electrical Code and any other
applicable state or local codes.
CAUTION:
In the Duplex confi guration, all
voltages will be disconnected from the compressor
modules using the circuit breaker. Opening the
appropriate fused knife-switch disconnects control
power. Turning off the appropriate motor circuit
breaker disconnects motor power.
Refer to the wiring diagram(s) that came with
the compressor system for pertinent wiring
connections.
Check the control voltage, phase, and amp ratings
before starting the electrical installation, and
make sure the voltage supplied by the facility is
the same. The wire size should be able to handle
peak motor amp load of all operating units, refer
to the full load and compressor system amperes
on the wiring diagram.
Check all electrical connections within the air
system that may have loosened during shipment.
2.0 Installation
