Spectron FS4, Руководство пользователя

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9 | Repair Spectron Gas Control Systems GmbH
46 GES_FS4_0520
9 Repair
9.1 General information on repair work
DANGER
Voltage
The components of the control and the connections are under voltage. There is a danger of
death on contact.
a) Only allow work in which the control unit must be opened to be carried out by trained spe-
cialist personnel (electricians).
b) Only perform work in which the control unit must be opened when the power supply is
switched off.
c) The five safety rules according to DIN VDE 0105 are to be observed:
ð
Disconnect from the mains
ð Secure against reconnection
ð
Verify that the system is dead
ð
Carry out earthing and short circuiting
ð Provide protection from adjacent live parts
WARNING
Noise emission
When working on pressurised pneumatic supply, significant noise emission can occur. Acute
and chronic loss of hearing may result.
a) Never perform work on the pressurised pneumatic supply without hearing protection.
b) Only replace the silencers when the supply is unpressurised.
WARNING
Displacement of atmospheric oxygen
In the event of inert gas leaks, displacement of atmospheric oxygen may occur. Danger of suf-
focation!
a) The operator must ensure adequate ventilation and airing in all rooms with gas installations
and monitor the oxygen content.
The objectives of the repair are:
– Detect and assess causes of malfunction
– Rectify faults and restore operational readiness
Repairs to the controller may only be performed by the manufacturer or specialist personnel
(electrical engineers) instructed on the system.
Before beginning maintenance work, the controller must be enabled and secured against recon-
nection. Observe the five safety rules according to DIN VDE 0105:
– Disconnect from the mains
– Secure against reconnection
– Verify that the system is dead