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Note: the above wiring diagram includes the pushbutton and indicating light. Call the factory or visit
our website (

) for the wiring diagram that applies to your specific application.

1) Mount the SKRU in the panel or enclosure.

2) Wire all circuits according to the appropriate wiring diagram.
3) Test the wiring to verify that the circuitry corresponds to the proper key position (trapped vs.

free).

SKRU Wiring Instructions

www.kirkkey.com

PAGE 4

KIRK INTERLOCK
KEY NORMALLY
RETAINED IN LOCK.
KEY REMOVABLE WHEN
SOLENOID IS ENERGIZED.

D.P., D.T. AUX. SWITCH.
CIRCUITS B & D
NORMALLY CLOSED.
CIRCUITS C & E
NORMALLY OPEN.

CIR. A

CIR. A

CIR. B

CIR. B

CIR. C

CIR. C

CIR. D

CIR. D

CIR. E

CIR. E

SOLENOID

PUSH BUTTON

(Close to Energize Solenoid)

NORMALLY
DEENERGIZED

SIGNAL LAMP INDICATES
WHEN SOLENOID IS
ENERGIZED.

156-617

CUSTOMER

TO

WIRE

THIS

SIDE

ONLY

8

8

7

7

6

6

5

5

2

2

4

4

3

3

®

KIRK

Solenoid Key Release Unit (Type SKRU) Wiring Diagram

1

Instruction Manual for:

Solenoid Key Release Unit and Time Delay Key Release Unit

1

IB/KRU/06

Summary of Contents for SKPM

Page 1: ...locks Once the complete interlock system is installed all extra keys must be removed from the system and destroyed or retained by a responsible person There should only be enough keys to operate the i...

Page 2: ...SKPM until the solenoid is energized The drawing shows the position of the contacts when the key is held Once the solenoid is energized and the key is rotated and released the contacts will change st...

Page 3: ...ey it once again becomes trapped and the auxiliary switch goes back to its original state The SKRU is available 1 unhoused 2 unhoused with front cover only or 3 housed in an aluminum box with two cond...

Page 4: ...tions www kirkkey com PAGE 4 KIRK INTERLOCK KEY NORMALLY RETAINED IN LOCK KEY REMOVABLE WHEN SOLENOID IS ENERGIZED D P D T AUX SWITCH CIRCUITS B D NORMALLY CLOSED CIRCUITS C E NORMALLY OPEN CIR A CIR...

Page 5: ...ed starting the time delay sequence The initiating key will come from an interlock on the equipment being de energized such as a capacitor bank or rotating equipment Inserting and rotating the initiat...

Page 6: ...key position trapped vs free 4 Set the timing to the proper delay setting 5 T est to verify the proper time delay SOLENOID SIGNAL LIGHT TIMING RELAY INTERLOCKS FXK FK A 3 A 2 8 7 6 5 2 4 3 1 1 3 7 8...

Page 7: ...EYS will be provided ONLY with proper authorization from the ultimate user to which the specific key combination has been assigned Duplicate Keys Each interlock is supplied with a key in its lock Thes...

Page 8: ...NOTE Stainless steel dust covers should be utilized to protect the lock cylinders when located outdoors or in a demanding environment Dust covers are available separately and can be easily added to an...

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