Moreover, the following instructions must be ob-
served:
Only a qualified electrician following elec-
trotechnical regulations may carry out work on
the electrical equipment of the compressor.
The compressor's electrical equipment must be
checked regularly. Defects such as loose con-
nections or charred cables must be rectified im-
mediately.
Only original fuses of the specified current rat-
ing may be used.
Only for RS compressors::
Due to the residual voltage on the capacitors, a
waiting time of at least 10 minutes must elapse af-
ter voltage-free switching (main switch OFF) be-
fore the switch cabinet can be opened. Observe
the danger sign on the switch cabinet! See table
"Safety signs".
Noise
The sound pressure level without the sound-proof-
ing enclosure is approx. 95 dB(A). Remaining for
long periods alongside the compressor without its
sound-proofing enclosure can result in irreversible
hearing impairment.
Only operate the compressor without the sound-
proofing enclosure during test runs. Wear ear de-
fenders!
The sound pressure level with the sound-proof-
ing enclosure is approximately: (See "Technical
data".)
During normal operation the compressor may only
be operated with a closed acoustic hood.
Oils, grease and other chemical substances
When handling oils, fats and other chemical sub-
stances, observe the applicable safety conditions!
Exercise caution when handling hot lubricants and
additives, there is a risk of burns or scalding!
Explosive areas
DANGER
Risk of explosion
The compressor is not designed for op-
eration in explosive atmospheres.
➯
Operation of the compressor in ex-
plosive atmospheres is forbidden!
2.3
Protection and safety
equipment
The compressor is equipped with the protection
and safety equipment described below.
All protective and safety equipment must be at-
tached and checked for trouble-free operation be-
fore every commissioning, in particular after main-
tenance and repair work.
In addition, the legally prescribed checking inter-
vals of the country of use must be adhered to.
NOTE
Operation of the compressor is only permitted
with complete and operational protective and
safety equipment.
Emergency-stop
The compressor can be rendered safe in danger-
ous situations using the emergency-stop pushbut-
ton.
Emergency-stop pushbuttons are attached:
on the compressor control panel
optionally in a control room (control centre)
Using emergency-stop
1. Push <Emergency-Stop> button.
The compressor is placed in a safe condition.
2. Rectify the fault that was the cause of the
emergency-stop.
See the "Troubleshooting" chapter.
3. Unlock <Emergency-Stop> button.
Turn the pushbutton anticlockwise.
4. Start up the compressor.
See section "Commissioning after a fault" in the
chapter "Commissioning and operation".
Safety valve / non-return valve
The compressor is protected from exceeding the
permissible operating pressure by a safety valve.
The safety valve opens at 15 bar / 218 psi.
The compressor is secured by a non-return valve
on the pressure side against reverse flow from the
compressed air network.
Protective covers and enclosure panels
The cooling air fans are covered by grilles.
The clutch between the drive and the compressor
is covered by a grille.
The compressor enclosure is designed so that any
broken bits that might fly out are retained in the
compressor.
The compressor enclosure serves as an acoustic
hood.
