2 of 12
Important Safety Information ......................................... 2
Installation ...................................................................... 3
Packaging Contents ................................................... 3
Tools Required ........................................................... 3
Materials Required ..................................................... 3
Location ..................................................................... 3
Installing the Enclosure .............................................. 3
Application 303V-1 ..................................................... 4
Application 303V-2 ..................................................... 5
Application 303V-3 ..................................................... 6
User Interface ................................................................. 7
Indicator LED ............................................................. 7
Sequence of Operation .................................................. 7
Technical Data .............................................................. 11
Limited Warranty and Product Return Procedure ........ 12
Important Safety Information
Table of Contents
It is your responsibility to ensure that this control is safely installed according to all applicable codes and standards.
tekmar is not responsible for damages resulting from improper installation and/or maintenance.
This is a safety-alert symbol. The safety alert symbol is shown alone or used with a signal word (DANGER,
WARNING, or CAUTION), a pictorial and/or a safety message to identify hazards. When you see this
symbol alone or with a signal word on your equipment or in this manual, be alert to the potential for
death or serious personal injury.
This pictorial alerts you to electricity, electrocution, and shock hazards.
This symbol identifies hazards which, if not avoided, could result in death or serious injury.
This symbol identifies hazards which, if not avoided, could result in minor or moderate injury.
This symbol identifies practices, actions, or failure to act which could result in property damage or
damage to the equipment.
Read manual and all product labels BEFORE using the equipment. Do not use unless you
know the safe and proper operation of this equipment. Keep this manual available for easy
access by all users. Replacement manuals are available at tekmarControls.com
• It is the installer’s responsibility to ensure that this control is safely installed according to all applicable codes
and standards.
• Improper installation and operation of this control could result in damage to the equipment and possibly even
personal injury or death.
• This control is not intended for use as a primary limit control. Other controls that are intended and certified as
safety limits must be placed into the control circuit.
The control includes fuses and transformer that are serviceable. Do not attempt to service any other parts on the
control. Attempting to service the control voids the warranty.
• Strip all wiring to a length of 3/8 in. or 10 mm for all terminals.
• A circuit breaker or power disconnect that provides power to the control should be located nearby and clearly labeled.
• Refer to the current and voltage ratings at the back of this manual before connecting devices to this control.
