Maxus Cast Iron Series Operating Instruction page 3

Installation
(Con't)
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
WARNING
!
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
Pump
Discharge
Tube
Check
Valve
Pressure
Gauge
Drain cock
Isolation Pad
(available
separately)
Figure 1 - Vertical Unit Identification
pipe size from the chart. Bury under-
ground lines below the frost line and
avoid pockets where condensation can
gather and freeze.
MINIMUM PIPE SIZE
FOR COMPRESSED AIR LINE
Length Of Piping System
CFM 25' 50'
10 1/2" 1/2"
20 3/4 3/4
40 3/4 1
60 3/4 1
100 1 1
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
WARNING
!
tions must be performed by a qualified
electrician. Installations must be in
accordance with local and national
codes.
Safety Valve Access
Motor
Pressure
Switch
Factory
Mounted
Magnetic
Starter
(Not on
all units)
Tank
Shut-off
Valve
(available separately)
Discharge Port
Tank
Isolation Pad
(available separately)
!
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
100' 250'
wiring. These should be consulted and
local ordinances observed. Be certain that
3/4" 3/4"
adequate wire sizes are used, and that:
3/4 1
1. Service is of adequate ampere rating.
1 1
2. The supply line has the same electri-
1 1
1 1 1 /
3. The line wire is the proper size and
4
HP
All wiring and
SPL up to 22.0 10 AWG
electrical connec-
5.0
7.5
10.0
15.0
25.0
Pump
Pressure
Gauge
Drain Cock
3
Cast Iron Series
Overheating, short
CAUTION
circuiting and fire
cal characteristics (voltage, cycles and
phase) as the motor.
that no other equipment is operated
from the same line. The chart gives
minimum recommended wire sizes for
compressor installations.
MINIMUM WIRE SIZE
USE 75°C COPPER WIRE
Single
Phase Three Phase
Amps 230V 208/230V 460/575V
8 AWG 12 AWG
8 AWG 10 AWG
N/A 8 AWG
N/A 6 AWG
N/A 3 AWG
Discharge
Tube
Motor
Pressure
Switch
Safety Valve
Tank Shut-off Valve
(available separately)
Discharge Port
Tank
14 AWG
12 AWG
12 AWG
10 AWG
8 AWG