La Marzocco L-500 Parts List

Models Affected:

Linea 4AV – ALL

TECHNICAL REFERENCE 110100/16

LINEA(USA) TECHNICAL BULLETIN

November 1, 2000

The mounting method for the L-500 contactor on all La Marzocco 4AV Espresso Machines with serial number
B02665 and higher has been changed. Originally the L-500 contactor was mounted using two 10-32 UNF X 1”
machine screws. Now, the L-500 contactor is mounted using DIN1 rail. A short section of DIN rail is mounted to
the L-500 mounting bracket and the L-500 is then mounted to the DIN rail.

Installation Instructions:

WARNING

This procedure should only be performed while the appliance is disconnected from the branch-circuit supply.

(Ensure power to the espresso machine has been shut off before removing the cover to access the L-500 contactor.)

1. Position L-500 Contactor close to the mounting bracket

2. Hook the stationary side of the L-500 contactor on the rear side of the DIN rail

3. Rotate the L-500 contactor until contact is made between the DIN rail and the movable latch

4. While continuing to rotate the L-500 contactor into position, insert a small flat blade screwdriver into the movable
latch and move the latch until the L-500 contactor rotates into position.

CAUTION

Move latch only far enough to allow the L-500 contactor to move into position. Excessive movement of the latch

will cause the latching mechanism to break and render the L-500 contactor unusable.

5. Remove screwdriver

MOUNTING
BRACKET

DIN Rail

CONTACTOR

Removal Instructions:

This procedure should only be performed while the appliance is disconnected from the branch-circuit supply.

(Ensure power to the espresso machine has been shut off before removing the cover to access the L-500 contactor.)

1. Insert a small flat blade screwdriver into the movable latch and move the latch until the L-500 contactor releases
from the DIN rail

Move latch only far enough to allow the L-500 contactor to release from the DIN rail. Excessive movement of the

2. Remove screwdriver

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1

DIN(Deutsches Institute for Normung) refers to a set of standards developed by the Otto-Graf Institute, an affiliate of Stuttgart University, in Stuttgart, Germany.

DIN standards are used to govern quality control and performance for a wide range of products.

L-500

MOVEABLE

LATCH

STEP-1

latch will cause the latching mechanism to break and render the L-500 contactor unusable.

STEP-2

STEP-3

WARNING

CAUTION

Page 1 of 1

STEP-4

STEP-5