Eaton NRX Series - Page 7

7
Instruction Leaet IL01301010E
effective January 2013
Installation and Removal Instructions
for Series NRX Spring Release, Latch
Check Switch and Motor Operator
EATON CORPORATION www.eaton.com
Figure 17. Step 2
Step 3: If an existing motor operator is already installed, remove it first
by following the instructions outlined in Section 8. If not, proceed with
Step 4.
Step 4: To simplify installation, examine the motor operator to verify
that the hub key on the motor operator is in the proper position. It is
properly positioned if the arrowhead on the hub key lines up with the
hole in the hub housing as shown. If they are aligned, proceed to Step
6.
Figure 18.
Hub Key
Arrowhead
Hole
Step 4
Step 5: If the arrowhead and hole are not aligned, rotate the hub key
clockwise using any appropriate tool to achieve alignment.
Figure 19. Step 5
Step 6: With the arrowhead and hole aligned, push on the two captive
mounting screws until they are nearly flush with their mounting collars.
This will simplify the Step 7 mounting process.
Figure 20.
Mounting Screw
Mounting Screw
Step 6
Step 7: For the NF Frame, align the hub key on the motor operator
with the key on the cam shaft and push the motor operator into its
mounted position. For the RF Frame, align the hub key on the motor
operator with the key in the cam shaft and position the motor operator
so the black actuator lever rests on the pin and is settled in the
mounted position.
• IMPORTANT
IT IS IMPORTANT THAT THE TWO KEYS ARE PROPERLY ALIGNED AND MATE
EASILY BEFORE TIGHTENING THE MOUNTING SCREWS IN STEP 8.