Repair Information; Technical Specifications - Johnson Controls M9203-B Series Installation Manual

2. Rotate the switch adjuster until it points to the desired switch point.
3. Connect the Auxiliary Switch to a power source or an ohmmeter and apply power to the actuator. The actuator
moves to the fully open position and holds while power is applied.
4. Observe the switch point. If required, repeat Step 1 through Step 3.

Repair Information

A number of replacement parts are available; see Table 1 for more details. If an M9203-Bxx-2(Z) Series
On/Off Electric Spring Return Actuator fails to operate within its specifications, replace the unit. For a replacement
electric actuator, contact the nearest Johnson Controls representative.

Technical Specifications

M9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators (Part 1 of 2 )
Power -BGx-2 Models
Requirements
-BUx-2 Models
-BUx-2Z Models
Auxiliary Switch -xxB Models
Rating
Spring Return
Rated Torque Power On
(Running)
Power Off
(Spring Returning)
Rotation Range
M9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators Installation Guide
Switch Adjuster
Figure 12: Switch Trip Point Settings
AC 24 V (AC 19.2 V to 28.8 V) at 50/60 Hz: Class 2 (North America) or Safety
Extra-Low Voltage (SELV) (Europe), 5 VA Running, 1.6 VA Holding Position
DC 24 V (DC 21.6 V to 28.8 V): Class 2 (North America) or SELV (Europe),
2.8 W Running, 0.8 W Holding Position
Minimum Transformer Size: 6 VA per Actuator
AC 100 to 240 V (AC 85 V to 264 V) at 50/60 Hz: 0.06 A Running, 0.02 A
Holding Position
AC 100 to 240 V (AC 85 V to 264 V) at 50/60 Hz: 0.08 A Running, 0.02 A
Holding Position
One Single-Pole, Double-Throw (SPDT), Double-Insulated Switch with Silver
Contacts:
AC 24 V, 50 VA Pilot Duty
AC 120 V, 5.8 A Resistive, 1/4 hp, 275 VA Pilot Duty
AC 240 V, 5.0 A Resistive, 1/4 hp, 275 VA Pilot Duty
Direction Is Selectable with Mounting Position of Actuator:
Actuator Side A Is Away from Damper or Valve: CCW Spring Return
Actuator Side B Is Away from Damper or Valve: CW Spring Return
27 lb·in. (3 N·m) All Operating Temperatures
27 lb·in. (3 N·m) All Operating Temperatures
Maximum Full Stroke: 95°
Adjustable Stop: 35 to 95° Maximum Position
10
30 30
10
50 50
70 70
90 90