7 non-rain master controllers lacking 24 volts ac, 8 permanent wire connections, Non-rain master controllers lacking 24 volts ac – Irritrol PRO-MAX User Manual

Page 25: Permanent wire connections, Figure 9: non-rain master controller 24 volts ac

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Pro Max User’s Manual

Rain Master Irrigation Systems


Disconnecting the Pro Max-UA from a Non-Rain Master Controller

To disconnect the universal adaptor, use the following procedure:

Step 1 Disconnect the large 37 pin connector plug from the universal adaptor by

grasping the plug’s body, not by the cable, and pull straight out.

3.7 Non-Rain


Controllers Lacking 24 Volts AC

24 Volts AC is required to power the Universal Adapter. If 24 Volts AC is not available from the
controller, use a step-down transformer to convert from the line voltage (usually 117 or 240
Volts AC) to 24 Volts AC and run the 24 Volts AC wire into the PC cable to the two wires
designated for 24 Volts AC and COMMON. There is no need to worry about the polarity of
these two connections. Additionally, connect the PC cables COMMON wire to the controller’s
COMMON terminal. Do not connect the PC cables 24 Volts AC wire to the controller.


High Voltage

24 VAC
Output of


Non-Rain Master Controller

without 24 VAC



24 VAC on PC

Figure 9: Non-Rain Master Controller 24 Volts AC

3.8 Permanent



A permanent mount connector can be installed on any controller so that the Pro Max-UA can be
easily installed and disconnected without having to deal with wiring connections. Three parts are
required (see Figure 9).

1. RMIS Part Number 32PC (or appropriate size cable)

2. RMIS Part Number CMAD (chassis mount adaptor)

3. RMIS Part Number 32EX (48” extension cable)

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