INTERMATIC MIL 72 Series 24 hour and 7 Day Universal Time Switches Instruction Manual
- June 12, 2024
- Intermatic
Table of Contents
INTERMATIC MIL 72 Series 24 hour and 7 Day Universal Time Switches
Product Information
The product is manufactured by Intermatic Incorporated, a company based in Libertyville, IL. It is a quartz unit with a reserve carryover of 72 hours. The product has received agency approvals and is recognized by UL.
Product Usage Instructions
To ensure proper usage of the product, please follow the instructions below:
- Before using the product, make sure it is securely plugged into a power source.
- Set the desired time on the quartz unit by turning the dial or using the control buttons, depending on the specific model.
- Ensure that the reserve carryover feature is activated if required. This feature allows the product to continue functioning for up to 72 hours in case of a power outage.
- Place the product in an appropriate location where it can be easily accessed and where it is protected from water or other potential hazards.
- Refer to the user manual provided by Intermatic Incorporated for any additional instructions or troubleshooting guidelines.
For more detailed information on the product and its usage, please visit this link to access the user manual.
OPERATING INSTRUCTIONS
MIL 72 Series 24.Hour and 7-Day Universal Time Switches
APPLICATION
Time-based control of lighting, ventilating, heating, cooling or other
electrical loads in commercial and industrial applications. The MIL 72 time
switches are available with a 24-hour or 7-day program dial with a single
pole/double throw switch.
The MIL 72A series is intended for surface mounting. The control is completely
enclosed in a plastic housing and includes a terminal cover and sub-base for
installation and hard wiring.
The MIL 72E is intended for flush (panel) mounting. All units are supplied
with a clear plastic cover.
TECHNICAL DATA
- Supply Voltage:
- Synchronous: 24, 120 and 240VAC, 60Hz models
- Quartz: 24V AC/DC. 120 and 240VAC 50/60 Hz
- Switch Type: SPDT
- Switch Rating:
- 21A © 250VAC resistive
- 1350 W tungsten
- 1HP @ 120VAC
- 2HP @ 240VAC
- 16 FLA, 96 LRA, 120VAC ind.
- 12 FLA, 72 LRA, 240VAC ind.
- Power Consumption: 24V: 0.1VA: 120V: 0.5VA: 240 V: 1.0 VA
- Ambient Temperature Range: -40°F to 180°F (-40°C to 82°C), synchronous units -4°F to 131°F (-20°C to 55°C) quartz units
- Reserve Carryover: 72 hours for quartz units
- Agency Approvals: JL Recognized
INSTALLATION
To the installer:
- Read operating instructions carefully.
- Check the input and output ratings marked on the unit to make sure this product is suitable for your supply power and application.
- Disconnect supply power prior to installation to prevent electrical shock.
- Wire in accordance with National and Local electrical code requirements. The MIL 72 time switch can be surface, flush or rail mounted and is also available with an enclosure for stand-alone applications.
SURFACE MOUNTING-MIL 72A
- Remove the dust-proof cover, and loosen two screws on opposite corners.
- Remove the housing that surrounds the time switch and the terminal cover away from the base.
- Place screw through pre-set holes in base andscrew to back of panel or wall.
- Wire in accordance with instructions. Depending upon the specific installation, you may find it more convenient to have wiring completed before attaching the base. Replace terminal cover and push timer firmly onto plug-in base. Now replace housing and secure with screws.
NOTES:
- The MIL 72A may also be DIN rail mounted- simply break out housing part that fits over rail on each side.
- 24V quartz unit will operate on 6VDC, 12VDC, or 24VDC For stand-alone installations, the unit may be surface mounted inside an indoor enclosure which is available from Intermatic Incorporated or your wholesaler.
- Indoor Enclosure:
PANEL MOUNTING-MIL 12E
Cut a square hole 2⅝” x 2⅝” (66mm x 66mm) in the front of the panel. Insert
the time switch through the opening. With screwdriver press down and turn
outer screws (A) until flanges are in position to fasten the unit in front
panel, then release. Insert plugs into holes as per illustration (B
).
Use ¼” quick connects and make connections in accordance with the wiring diagram shown and applicable code requirements.
WIRING
- Disconnect the power.
- Wire according to the proper voltage marked on the unit. Wiring to incorrect voltage will void the warranty.
- Connect wiring according to the wiring diagram. The terminals on the MIL 72A sub-base will accommodate 10 to 24 AWG wires.
INTERMATIC INCORPORATED Libertyville, IL 60048 www.intermatic.com
Terminal Connections
PROGRAMMING
- The weekly program dial shows the seven days of the week and AM/PM imprints for each day. The 24- hour dial has quarter-hour divisions and AM/PM indications.
- The time switch is set by pushing the captive trippers to the outer ring position for the entire period that the load is to be turned ON, i.e., fifteen minutes for each tripper on the 24-hour dial and 2 hours for each tripper on the 7-day dial. When the tripper is pushed to the inside, the switch is in the OFF position.
SETTING TIME TO SET THE CURRENT TIME (AND DAY OF WEEK ON 7 DAY UNITS), TURN THE MINUTE HAND CLOCKWISE. DO NOT SET THE TIME BY ROTATING “OUTER” DIAL.
Turn the minute hand clockwise until the day of the week (7-day timer) and the
time of day on the outer dial is aligned with the triangle marker on the inner
dial (two o’clock position).
For example for a 7-day program dial Monday 10:30 AM. Turn the minute hand
clockwise until Monday 10:30 AM is aligned with the triangle on the inner
dial. The hour and minute hand will show exactly 10:30.
For Example for the 24-hour program dial 10:30 AM. Turn the minute hand
clockwise until 10:30 AM is aligned with the triangle on the inner dial. The
hour and the minute dial will show exactly 10:30
MANUAL OVERRIDE
All MIL 72 units are available with an optional 3-way manual override (type
designation “H”