R E P A I R S

Screw / screw connection

Torque

Position

TX 20 screw /

150

(+30/­0) Ncm

ground connection (PE) on ther­

1.5

(+0.3/­0) Nm

moblock

 

 

Designation of spare parts

The components in the following illustrations are indexed with position numbers. See separate spare parts list for corresponding spare part numbers.

Distinguish between spare parts of the different models and core unit versions.

Electrostatic discharge protection

When installing a new electronic control board, the service technician must be earthed with a grounding band.

Wiring arrangement

Random changes in the wiring arrangement during a repair can cause

­electromagnetic interferences,

­squeezed wires,

­insulation defects due to contact with hot parts,

­insulation problems if low and high voltage wires are not separated.

Protective measures:

Do not change the course of internal wiring during repair.

Make sure that wires are distant from hot parts ­ use existing cable ducts and clips.

Residual water

If it is necessary to pull off hoses from components, hold ready a small beaker and a towel to collect and wipe away leaking water.

A special procedure is necessary to empty the fluid system of the coffee machine for repair or shipment (refer to "Empty water system" on page 37).

54Citiz service manual

Page 54
Image 54
Nespresso EF485/486 Designation of spare parts, Electrostatic discharge protection, Wiring arrangement, Residual water