Chapter 2: Install And Wire; Installation - Watlow PM LEGACY PM3 User Manual

2

Chapter 2: Install and Wire

Installation

1. Make the panel cutout using the
measurements in figure 1.
2. Remove the green terminal connectors and
the mounting collar assembly.
3. Insert the controller into the panel cutout from
the front.
4. Orient the collar base so the flat side faces
front and the screw openings are on the sides
(see figure 2), then slide the base over
the back of the controller.
5. Slide the mounting bracket over the controller
with the screws aligned to the collar base.
Push the bracket gently but firmly until the
hooks snap into the slots in the case.
6. Tighten the two #6-19 x 1.5 in. screws with a
phillips screwdriver until the device is flush to
the panel
(3 to 4 in-lbs torque).
7. Reinstall the terminal connectors to their
original locations. (Or first connect field wiring
as indicated in this guide and then reinstall the
connectors).
Chemical Compatibility
This product is compatible with acids, weak alkalis, alcohols, gamma radiation and ultra-
violet radiation. This product is not compatible with strong alkalis, organic solvents, fuels,
aromatic hydrocarbons, chlorinated hydrocarbons, esters and keytones.
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WARNING!
All electrical power to the controller and controlled circuits must be disconnected before
removing the controller from the front panel or disconnecting other wiring. Failure to follow
these instructions may cause an electrical shock and/or sparks that could cause an
explosion in class 1, div. 2 hazardous locations.
Wa tl ow P M3 L E GAC Y ™ P ID Co n tro ll e r
44.96 to 45.47 mm
(1.77 to 1.79 in.)
Terminal
Connectors
1 6
• •
22.2 to 22.5 mm
(0.87 to 0.89 in.)
Figure 1
Collar
Base
Mounting
Bracket
Figure 2
Figure 3
C hapter 2 Instal l and W ire