3
Cast Iron Series
perature generated and retain the pres-
sure. All pressurized components of the
air system must have a pressure rating
higher than or equal to the 200 psi for
two-stage compressors or 150 psi for sin-
gle stage compressors ASME safety valve
setting. Incorrect selection and installa-
tion of any tube, pipe or hose could result
in bursting and injury. Connect piping sys-
tem to tank using the same size fitting as
the discharge port.
INSTALLING A SHUT-OFF VALVE
A shut-off valve should be installed on
the discharge port of the tank to control
the air flow out of the tank. The valve
should be located between the tank and
the piping system.
Never install a
shut-off valve
between the compressor pump and the
tank. Personal injury and/or equipment
damage may occur. Never use reducers
in discharge piping.
When creating a permanently installed
system to distribute compressed air, find
the total length of the system and select
pipe size from the chart. Bury under-
ground lines below the frost line and
avoid pockets where condensation can
gather and freeze.
Apply air pressure to the piping installa-
tion and make sure all joints are free
from leaks BEFORE underground lines
are covered. Before putting the compres-
sor into service, find and repair all leaks
in the piping, fittings and connections.
WIRING
All wiring and
electrical connec-
tions must be performed by a qualified
electrician. Installations must be in
accordance with local and national
codes.
Overheating, short
circuiting and fire
damage will result from inadequate
wiring.
Wiring must be installed in accordance
with National Electrical Code and local
codes and standards that have been set
up covering electrical apparatus and
wiring. These should be consulted and
local ordinances observed. Be certain that
adequate wire sizes are used, and that:
1. Service is of adequate ampere rating.
2. The supply line has the same electri-
cal characteristics (voltage, cycles and
phase) as the motor.
3. The line wire is the proper size and
that no other equipment is operated
from the same line. The chart gives
minimum recommended wire sizes for
compressor installations.
10
1/2”
1/2”
3/4”
3/4”
20
3/4
3/4
3/4
1
40
3/4
1
1
1
60
3/4
1
1
1
100
1
1
1
1
1
/
4
MINIMUM PIPE SIZE
FOR COMPRESSED AIR LINE
Length Of Piping System
CFM
25’
50’
100’
250’
Safety Valve Access
Pressure
Switch
Factory
Mounted
Magnetic
Starter
Discharge Port
Drain cock
Isolation Pad
Check
Valve
Pump
Motor
Tank
Discharge
Tube
Tank
Shut-off
Valve
Pressure
Gauge
Pump
Pressure
Gauge
Discharge
Tube
Motor
Pressure
Switch
Safety Valve
Drain Cock
Tank
Discharge Port
Tank Shut-off Valve
Isolation Pad
Figure 1 - Vertical Unit Identification
(available separately)
(available separately)
Installation
(Con’t)
(available separately)
(available
separately)
(Not on
all units)
www.campbellhausfeld.com
MINIMUM WIRE SIZE
USE 75°C COPPER WIRE
Single
Phase
Three Phase
HP
Amps
230V
208/230V 460/575V
SPL up to 22.0 10 AWG
5.0
8 AWG
12 AWG
14 AWG
7.5
8 AWG
10 AWG
12 AWG
10.0
N/A
8 AWG
12 AWG
15.0
N/A
6 AWG
10 AWG
25.0
N/A
3 AWG
8 AWG
