23
Precautions for use and maintenance
Table 1
POSITION
SAFETY DEVICE
DESCRIPTION
INSPECTION
1
Safety valves.
Protect the third stage and the cylinders
from being overfilled; it is calibrated
during the inspection of the compres-
sors.
The safety valve must be checked at
each refill; start up the compressor with
the cylinder valves closed and the end
valve open. Check that the safety valve
starts operating correctly with the pres-
s ur e g a ug e , o p e n t he va l ve s a nd
proceed with the refill.
2
Sound-proofed frame.
Built of steel.
Periodically check its integrity.
3
Side panels.
Fixed with locks.
Periodically check their integrity.
4
Manual condensate discharge taps.
T he c o n d e ns a t e i s a m i l k y- w hi t e
emulsion formed of oil and water.
The absorption of water by the filter
ca us es wea r on the fi lte r i ts e lf a nd
consequent contamination.
Open the discharge taps every 10-15
minutes and make sure the condensate
comes out visibly and consistently.
If the condensate is discharged automa-
tically, check that it operates correctly by
opening the manual discharge taps. The
condensate should be present in mini-
mum quantities.
5
Active carbon filter and molecular sieve.
The quality of the air depends to a great
extent on the conditions of the filter and
sieve.
The cartridge must be replaced before
the air becomes foul smelling.
For the frequency of replacement, see
the instructions in Chapter 11, "Main-
tenance".
6
Electrical switcboard built to EN 60204-1 regulations with IP 54 level of protection and fitted with a lock and key.
7
8
Pressure gauge showing the operating pressure.
9
Pressure switch that can be manually calibrated showing the maximum cylinder filling pressure; when the set pressure is reached,
the compressor turns off.
10
Sealed hour counter to memorize the actual hours of operation in order to be able to carry out the maintenance procedures at
the proper intervals.
11
Danger of crushing hands symbol (if the side panels are removed).
12
Danger of moving parts symbol.
13
Danger of voltage present symbol.
14
Removal of safety devices prohibited symbol.
15
Work on moving parts prohibited symbol.
16
Smoking prohibited symbol.
17
Gloves compulsory picture diagram.
18
Goggles compulsory picture diagram.
19
Helmet compulsory picture diagram.
20
Rating plate on the electric motor giving data concerning voltage, phases, frequency, breaking capacity.
21
Pump unit oil level indicator.
22
Machine plate showing the CE mark.
23
Hose area : danger of direct contact by the operator if breakage should occur during cylinder filling.
24
Voltage warning plate. Only qualified staff may intervene.
(see "Safety Regu-
lations" enclosed)
Warning to use the machine and carry out maintenance in accordance with the instruction manual.
(see chapter 11)
Warning to cut off the power supply before carrying out any maintenance work.
Содержание MCH 13/ET
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