303359 Rev. D 05/13 • Page 8 of 12
Service
!
WARNING
Electrical power must be turned OFF before and during installation and maintenance. Failure to do so may result in serious or fatal
injuries due to electrocution.
!
WARNING
If any part of the receptacle appears to be missing, broken, or show signs of damage—discontinue use immediately! This condition
could cause serious or fatal personal injury due to electrocution and/or equipment damage. Repair with the proper replacement part(s)
before continuing service.
Disconnect Switch
Disconnect switches occasionally fail and need to be replaced. The disconnect switch used in this receptacle can be replaced with the
same type and brand as factory installed and will not affect the UL Listing.
To Replace the Disconnect Switch:
1.
Referring to Figure 2, remove the switch actuator stud (Item #11) by unscrewing it.
2.
Remove the disconnect switch’s sliding and fixed plates (Item #14 & #20) by removing the two screws (Item #15).
3.
Remove the clear plastic shield (Item #16) by loosening (but not removing) its holding screws.
4.
Loosen the line and load side pressure screws (Item #8 & #9) and remove the line and load side wires from the disconnect switch (Item #6).
5.
Remove the switch base plate (Item #12) by removing the switch base plate screws (Item #13).
6.
Remove the disconnect switch from its base plate by taking out the switch mounting screws (Item #24). Remember the orientation
of the pointer on Interlock Sleeve with respect to the switch position. The pointer must indicate that the receptacle is “OFF” when
the disconnect switch is in the “OFF” position.
7.
Replace the disconnect switch, with the same type as shown in Table 4, by reversing the steps above. Make sure to reconnect the
wires to the same locations as before disassembly.
Table 4: Disconnect Switch
Disconnect Switch Part Number
Ampere Ratings
Number of Poles
Horsepower
Appleton
Cuttler-Hammer
59301020100
DS36U
100 A
3
75
8.
Torque the switch mounting screws to 25 in.- lb. to fasten the disconnect switch onto the switch base plate. Assemble the switch
subassembly in the enclosure using the switch base plate screws with a torque of 25 in.- lb.
9.
Torque the line and load pressure screws to 50 in.- lb. to hold the wires in place.
10.
Conduct electrical tests. Refer to “Electrical Testing” on page 5 for details.
Terminal Block Interior
If applicable, tighten the terminal block lug screws to 50 in.-lb. torque for #2 AWG wire range (see Figure 7).
!
WARNING
Failure to tighten the terminal block lug screws to 50 in.-lb. torque may result in over stressed wire terminations, which could cause
the conductors to pull out of the terminal block and cause serious/fatal injuries due to electrocution.
Figure 3: Receptacle Phase Designation—3 Wire, 4 Pole
G
GROUNDING WIRE
GROUNDING WIRE
1
3
2
HALF MOON
CONFIGURATION
TERMINAL BLOCK
LUG SCREW
