Operating Instructions_VF335_en.pdf - 第318页
8|Service and maintenance 8.5.4 Compressed air heating: Visual inspection DANGER Risk of burns from hot surfaces! a) Allow the heater to cool to room temperature before carrying out service and cleaning work! 1 2 2 Fig…
8|Service and maintenance
ð There must be no cracks or chaps visible in the glass plate.
d) Damaged glass plates must always be immediately replaced by qualified tech-
nicians!
e) Clean the glass plate (3) with a lint-free cloth and a commercial glass cleaner.
ð If heavily soiled with flux:
f) Use a cleaning agent recommended by the flux manufacturer. Never work with
hard or sharp objects!
ð The process has now been completed.
Ersa GmbH Operating Instructions_VF335_en|Rev. 14|30/11/2017 317/695
8|Service and maintenance
8.5.4 Compressed air heating: Visual inspection
DANGER
Risk of burns from hot surfaces!
a) Allow the heater to cool to room temperature before carrying out service and
cleaning work!
1
2 2
Fig.96: Compressed air heating
Standby air flow
ü To check the standby air flow:
a) In the [Preheating] input dialog, in the [Convection]frame, click on the
but-
ton.
ð The button is displayed in yellow.
b) Hold your hand under blow pipe (1).
Ersa GmbH Operating Instructions_VF335_en|Rev. 14|30/11/2017 318/695
8|Service and maintenance
ð You should feel a regular air flow.
Increase convection
ü To check the increase convection:
a) In the [Preheating] input dialog in the [Convection] frame, click first on the
button and then on the one.
ð Buttons are displayed in yellow.
b) Hold your hand under the blow pipe (1).
ð You should feel an air flow increase.
Air hoses
ü Visually check air hoses:
a) Inspect hoses (2).
ð Hoses must be soft, flexible and transparent.
a) Have heavily discoloured, porous or hardened hoses replaced by qualified staff.
ð The process has now been completed.
Ersa GmbH Operating Instructions_VF335_en|Rev. 14|30/11/2017 319/695