Operating instructions

Weekly Maintenance

Replace the compliant graphite foils of the pressure disc:

1) If the System is an EVG520IS bring the Cover to Service Position

first (remove the perforated plate “Covering top back” and bring the

Cover into its service position).

2) Remove 5 pieces pressure disc clamps

3) Remove Pressure Disc

4) Remove carefully the two “Compliant Layer Graphite” (Number “1”

and “3” in following drawing. It’s recommended to change both

“Compliant Layer Graphite” because of evenness.)

Note: Contamination! Thermocouple!

5) Mount new Compliant Layer Graphite and fix Thermocouple.

Figure 77

1 Compliant Layer Graphite 6”/8”/12” (depends on the machine)

Thermocouples (2 pieces)

– The two Thermocouples must be placed

between the two “Compliant Layers Graphite”!

Compliant Layer Graphite

– Most time the two “Compliant Layers

Graphite” do have the same size. If not place the smaller Graphite-Disc

(Number “3” in drawing above) exact in the middle of the “Pressure Disc” (A

little bit of Isopropanol can help you with that).

The smaller “Graphite Discs” are used for special

“Pressure Discs” only.

4 Pressure Disc

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