User's Manual

Rockwell Automation Publication 440G-UM004C-EN-P - August 2020 15
Chapter 3 Installation
Environmental
Considerations
The 440G-MZ safety switch is rated for IP69K in accordance with ISO 20653
and IP69 per IEC 60529. This rating involves a short-term test that is made
with high-pressure water jets at 80 °C (176 °F). The test is passed if no water
enters the enclosure of the switch that contains the electrical components and
the switch function is not impaired.
This rating does not promise protection from any liquids other than water and
does not promise the mechanical longevity from continuous or frequent
exposure.
Mount the Switch and
Actuator
Three M5 fasteners (not provided) are required for proper mounting of the
switch to a rigid guard door frame (Figure 4
). Two M5 fasteners (not provided)
are required to mount the actuator.
Figure 4 - Required Mounting Hardware for Switch and Actuator
Check the manufacturer specifications of any thread-locking compound used
to secure the screws. It is recommended to use a cyanoacrylate-type
compound. Other compounds can cause stress cracks in the plastic feet of the
switch.
ATTENTION: Do not defeat, tamper, remove, or bypass this unit. Severe injury to
personnel could result.
The presence of spare actuators can compromise the integrity of the safety
systems. Personal injury or death, property damage, or economic loss can result.
Appropriate management controls, working procedures, and alternative protective
measures should be introduced to control their use and availability.
IMPORTANT Do not use a washer with the screw at the base of the switch body. Using a
washer causes the plastic to crack.
Loctite 242 thread-locking adhesive is known to cause stress cracks in the
plastic housing of the 440G-MZ safety switch and should not be used. Lab tests
have determined that Loctite 425, a cyanoacrylate adhesive, does not cause
cracking and can be considered if the faster cure time is acceptable in the
application.
3 x M5
2 x M5