Middleby Marshall 60254 Manual Do Utilizador

P/N 60254 September 28, 2012

5.  If it is necessary to add or remove conveyor links to achieve 

the correct tension, OR if it is necessary to reverse the 

conveyor belt for correct orientation, the belt will need to 

be removed from the conveyor frame. If this is necessary, 

perform the following procedure: 
•  Remove the conveyor assembly from the oven and place 

it flat on the floor.

•  Remove the master links using long-nose pliers. Then, 

roll up the belt along the length of the conveyor frame.

•  Add or remove belt links as necessary to achieve the 

correct belt tension.

•  Replace the belt on the conveyor frame. Check that the 

conveyor belt links are oriented as shown in Figure 2-15, 

and that the smooth side of the conveyor belt faces UP.

•  Connect the inside master links. Check that the links 

are oriented as shown in Figure 2-15.

•  Connect the outside master links. Note that the outside 

master links each have an open hook on one side. This 

hook aligns with the hooks along the sides of the other 

conveyor links. See Figure 2-15.

•  Replace the conveyor into the oven.

E.  Final Assembly
1.  Install the crumb trays underneath the conveyor as shown 

in Figure 2-16. 

Conveyor belt reversal consists of three steps:
1.  Physically reversing the conveyor belt.
2.  Resetting direction jumper on the conveyor control board.
3.   Switching the photo detector.

Remove the conveyor from the oven and find the master link 

location. Remove master links and remove the belt from the 

conveyor frame. Reassemble the belt back onto the frame (in 

the reverse direction) and reinstall the master links. Replace 

the conveyor assembly in the oven.

Locate Jumper P1 on the conveyor control board. Move jumper 

from terminals 1 and 2, and replace onto terminals 2 and 3.

Remove the three screws securing the access door to the unit. 

Open the access door and disconnect the connector fitting to 

the photo eye assembly. Remove the two screws securing the 

photo eye assembly to the control box. Remove the four nuts 

securing the photo eye to the housing. Rotate the photo eye 

180 degrees and resecure the photo eye with the four nuts. 
On the opposite control box, remove the two screws holding the 

cover where the photo eye assembly will be positioned. Secure 

the photo eye assembly in position with the two screws. Place 

the photo eye cover on the opposite control box, where the 

photo eye assembly was removed, and secure the two screws. 

Secure the access door with the three screws. 
Remove the three screws securing the access door on the 

opposite side. Open the access door, where the photo eye is 

now positioned, and connect the photo eye connector fitting. 

Secure the access door with the three screws. 
Apply power to the unit. Adjust the photo eye height by loosening 

the two screws securing the photo eye assembly and sliding 

the photo eye assembly either up or down, such that the beam 

is approximately 1/4 inch above the belt.

Note:  This is MUCH easier in reduced light.

Replace all covers.

Direction

of travel

CORRECT 

master link 

position

Incorrect 

master link 

position

Crumb tray 

insertion