GA 12.137/2.02 - 05/2002
Installation
9
2 Installation
2.1 Safety information
The owner/operator shall ensure that the compressor
units are operated only by persons who have been
instructed in their use and that they are serviced only by
qualified technicians; refer also to the Accident Preven-
tion Regulations for compressors (VBG 16), sections 12
rule 17, mounting and operation information or equiva-
lent local codes. Moreover, the owner/operator must pre-
vent the unauthorized use of the compressor units and
the connected equipment.
Warning
The compressor unit and the flexlines are
filled with helium at pressures of up to 16
bar (232 psig; 1.6 MPa) when stopped and
of up to 29 bar (420 psig; 2.9 MPa) during
operation.
The components in the compressor units
(e.g. compressor capsule, heat exchanger,
piping, separators and adsorber) are under
pressure, as are the flexlines; they must
not be worked either mechanically or ther-
mally.
All valves or switches in the compressor
unit must not be blocked or modified.
Do not lay flexlines across corridors or passageways –
danger of physical damage and corrosion!
Observe minimum bending radius of 20 cm (8“) – danger
of kinking!
Never damage flexlines with pointed or sharp objects!
Never attempt to make repairs to flexlines!
Never install flexlines which show signs of damage!
When running the compressor unit, provide protective
caps at all self-sealing couplings which are not required
for operation.
Attach or detach flexlines only with the compressor unit
switched off and when the pressure is below 28 bar (406
psig; 2.8 MPa). Once flexlines have been detached,
place protective caps on the self-sealing couplings.
Even when switched off, the compressor unit and the
flexlines will be under pressure of up to 16 bar (232 psig;
1.6 MPa).
Warning
These compressor units shall not be used
in an environment subject to explosion
hazard.
Warning
Potentially fatal voltages are present in the
compressor unit. Before beginning any
work on the unit, switch it off and isolate it
from the power supply network.
The line joining the compressor unit and the
cold head may be connected or disconnec-
ted only after the compressor unit has been
switched off and separated from the line
supply. Electrical shock hazard! Moreover,
the compressor unit and the cold head
could be damaged.
To avoid electrical shock, be sure to ground
the compressor unit and all attached de-
vices.
The electrical connection shall be made
only by a qualified and licensed electrician
in accordance with VDE standard 0105, in
compliance with the guidelines set forth in
VDE 0100, and observing local codes.
Warning
The compressor capsule, heat exchanger
and piping will become so hot during opera-
tion, (> 80
°
C, 176
°
F) that there will be a
danger of burns. Before beginning any work
on the compressor, switch it off and allow it
to cool down.
