CL5550 - Installation Instructions

CL5550 Mortise Lock - Installation Instructions


Check the contents of the box are correct according to the model.

 Front Plate
Back Plate
 Lever Handles
 Sprung Spindle x 1
 1.5v AA Batteries
 Mortise Lock, Faceplate and Strike
 Fixing Bolts x 4 incl. spare
 Alignment Insert
 Allen Keys
 Allen Keys
 Front Plate Cylinder Keys
 Front Plate Cylinder Cover
 Classroom Function Tailpiece

This box should also contain the installation template and getting started guide.

Tools required for installation:
  1. Power Drill
  2. Drill bits: 6mm (¼”) & 25mm (1”)
  3. Hammer / mallet
  4. Philips screwdriver
  5. Chisel 25mm (1”)
  6. Stanley knife
  7. Adhesive tape, pencil, bradawl, tape measure
  8. Pliers and hacksaw for cutting bolts


You should familiarize yourself with the operation of the lock and check that all the parts  work properly.

Remove the battery cover from the back plate and install the 4 x AA cells supplied.

Connect the cables from the front plate and back plate. A BEEP should be heard when  you do this. If no BEEP is heard then check that the batteries are correctly installed.

Place the long spindle in the front plate socket and using finger grip only, test that the  spindle is easily moved 80° in both directions. Leave socket in the centred position.

Enter the factory Master Code #12345678.

The keypad will flash blue and the spindle should not turn as before. After 5 seconds  the keypad will flash red and the spindle should turn easily again. This confirms that the  clutch engaged correctly when the code was entered.

N.B. When the Master Code is entered 3 times consecutively without performing a  programming function, a penalty time of 10 seconds is activated.  Disconnect the cables.


Remote Release Option
Cables are provided for the REM 1 and REM 2  terminals on the circuit board. 

REM 1 is for connection to a reception desk push  button or a door intercom system. Pressing the button will cause the keypad to flash blue on the lock and release the lock for the pre-set time.

REM 2 is for connection to the building alarm system  to release a door in an emergency. This allows rooms, wards, offices to be easily checked to ensure that no person is trapped or
overlooked  during an emergency evacuation. When activated REM 2 will maintain the unlocked  condition for 30 minutes, the keypad will flash red and BEEP during this time.

The lock will automatically lock again after 30 minutes. If necessary Program 7 can be  used to re-lock before the end of the 30 minutes.

REM 1 and REM 2 do not require additional power. They are normally open contacts  requiring a momentary or maintained signal to close.


Outside handle turns freely without operating the latchbolt. When the code is  entered the keypad will flash blue and the handle will retract the latchbolt. The latch  automatically locks the door when closed. The key will open the door without the code.


- For fitting to a wood or composite door

Take time to be precise and finish the job quicker.

Installation holes must be drilled in exactly the correct positions and precisely at right  angles to the door surface. Lock components must be vertically and horizontally  accurate in relation to each other and to the door.

Wedge the door firmly to prevent movement whilst drilling and chiselling.

1. Lightly mark a height line on the edge and both faces of the door, and the door  jamb, to indicate the top of the lock when fitted. Mark a line down the centre of the door edge. Crease the template at ‘Fold along door edge’, and tape it to the door with the template ‘Height line’ aligned with the height marked on your door. Mark the holes to be drilled. Reverse the template and apply to the other side of the door, mark the holes to be drilled again.

2. Tape the mortise lock template to the door edge in line with the centre line and  height lines already marked. Mark the holes to be drilled.

3. Keeping the drill level and straight, drill the holes in the door face. Drill from both  sides of the door to increase accuracy and to avoid damage to the other side when a drill goes right through.

4. Drill holes in door edge 4 ½” (115mm) deep. Clear excess material in socket to  accept the mortice lock.

5. Insert mortice lock into socket, draw around the faceplate. Chisel a rebate ¼”  (6mm) deep to accept faceplate. Fix mortice lock into the socket using wood screws provided. Attach separate faceplate to mortice lock using machine screws provided.

6. Fit the self-adhesive gaskets to the front and back plates. The gaskets provide  friction against the door so that it is not necessary to over-tighten the fixing bolts to  provide stability.

7. Remove the five socket head bolts from the back plate (two are found under the  battery cover). This will release the inside fixing plate.

8. Cut the fixing bolts to correct length. Measured from beneath the bolt head, the length should be the door thickness, plus approximately 15mm ( ½ ”) to the nearest  cutting point of the bolt.

N.B. Always cut the bolts at one of the cutting points so as not to damage a thread.  Use the cutting edges of pliers to crimp strongly several times around the selected cutting point. The surplus end should break off quite easily.

9. Put the spindle into the mortise lock latch follower with the spring on the code side  of the door.

10. Apply the front plate over the spindle, passing the cables through the door. Pass  the power cable through the cylinder hole in the lock case from the keypad side.

11. Place the fixing plate over the spindle, passing the cable through the center hole.  Fit the alignment insert over the spindle. Screw the fixing bolts through to the front plate. (See diagram A)

12. Connect the cables on battery side, storing any excess cable within the door. Install  the batteries.

13. Check that the spindle turns freely, and the latch retracts and projects smoothly,  with the alignment insert in place. If it is tight, loosen the fixing bolts slightly and adjust the position of the fixing plate until the spindle will turn freely. Tighten the fixing bolts. Test the spindle again. Do not over-tighten the bolts as this may cause the door to distort and affect the lock function. You must remove the alignment

14. Fit the back plate over the fixing plate using the four socket head screws.

15. Fit the cylinder cover and outside handle to the front plate.

16. Fit the inside handle to the back plate.

17. The inside handle will now retract the latchbolt. The outside handle will turn freely  without retracting the latch. Enter the factory Master Code #12345678. The keypad will flash blue and the outside handle will now retract the latch.

18. Fit mortice lock faceplate.


Position the Strike Plate on the door frame so that the aperture lines up with the  latchbolt. Mark the fixing holes, and draw around the apertures for the latchbolt hole.  Chisel out the latch aperture to 15mm (½”) deep to receive the latchbolt. Fix the strike  plate with the top screw only and gently close the door. Ensure that the latchbolt enters  its aperture easily and holds the door without too much ‘play’. When satisfied, draw  around the final position of the strike plate, remove it, and cut a rebate to allow it to fit  flush to the surface. Re-fix the strike with both screws.

© 2022 Codelocks Ltd.  All rights reserved

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