Installation; Isc Mounting; Pressure Transducer Mounting/Piping - Ingersoll-Rand Intellisys System Controller Operators / Instruction Manual, Parts List

3.0 INSTALLATION

Before beginning Intellisys System Controller (ISC)
installation and system operation, the following require-
ments and recommendations must be satisfied.
1. Each Intellisys compressor must have its controller
software revision at or above a certain minimum level to
work with the ISC. The machine types and the required
software EPROM minimum version levels are listed
below. Check each machine to be controlled by the ISC
for appropriate EPROM's. If the EPROM is not of the
correct minimum version level, an appropriate EPROM
may be ordered from your local Ingersoll-Rand
Distributor or Air Center.
Machine
Type
U-Series (10-40 Horsepower)
15-50 Horsepower SE
SSR 50-450 Horsepower
SSR 50-450 Horsepower
Extended Memory
Sierra 100-200 Horsepower
Recip
2. The Automatic Start/Stop feature is required to be
installed on each compressor to receive the full energy
saving benefits of the ISC. Compressors without the
Auto Start/Stop function will continue to run after the ISC
tells them to unload. Compressors with Auto Start/Stop
could stop themselves after their stop-time criteria are
met.
3. The mounting location of the ISC's pressure transduc-
er is very important. The ISC will load and unload com-
pressors based on the air pressure it measures at the
transducer's location. Because the transducer will typi-
cally be mounted in a receiver tank or large common air
header, it will likely be reading pressures lower than the
compressor discharge pressures. The transducer loca-
tion and the user-set TARGET PRESSURE must allow
for these pressure differences. Be sure to follow the
instructions for setting the TARGET PRESSURE as
detailed in Section 4.2.2 PRESSURE SET UP AND
CONTROL.
Perform the following tasks to install the ISC system.
Each is described in numbered steps that can be
checked off to help ensure a trouble-free installation.

ISC Mounting

Pressure Transducer Mounting/Piping

Pressure Transducer Wiring
ISC Power Wiring
ISC Communication Wiring
Power On Confirmation
Pressure Transducer Calibration
6
3.1 ISC MOUNTING
1. The ISC can be easily installed on any suitable sur-
face in the general vicinity of the air compressors. Refer
to the typical air system drawing (Figure 6.12) for
requirements.
2. Mount the ISC and associated wiring conduits using
general arrangement drawing (Figure 6.10) for mounting
dimensions.
3.2 PRESSURE TRANSDUCER MOUNTING/PIPING
1. Choose one of two typical locations for the transducer.
It can be installed in a receiver tank or in a common dis-
charge air header, as long as either one serves all the
EPROM Min.
sequenced compressors. See Figure 3.2-2 for Choice A,
Version Level
the tank; and Choice B, the header. The tank is the rec-
9.3
ommended location as long as it is close to the com-
1.1
pressors.
1.9
2.0
2. In either location, mount the transducer with a dripleg
and isolation valve to allow for calibration and repairs.
2.0
Mount as shown in Figure 3.2-1, and refer to the general
1.5
arrangement drawing (Figure 6.10) for mounting dimen-
sions.
3. If the transducer is to be mounted in the air header,
Choice B, connect it to the TOP of the header to prevent
moisture accumulation in the transducer. If the header
runs at floor level, mount the transducer to the wall
above the header and connect it to the top of the header
using pipe or tubing. This will prevent moisture accumu-
lation and damage to the transducer.
NOTE: If there are dryers or filters installed in the sys-
tem between the compressors and the ISC pressure
transducer, the ISC's user-set TARGET PRESSURE
must be adjusted to compensate for the pressure drop
caused by these devices. Proper adjustment must be
done to prevent overloading the compressor main drive
motors. This procedure is described in Section 4.2.2
PRESSURE SET UP and CONTROL.
TO RECEIVER TANK
OR AIR HEADER
FIGURE 3.2-1 PRESSURE TRANSDUCER
INSTALLATION
DRIP LEG