UNM STS/STL
II/3
GB
Prevent the vessel from emptying completely
during longer downtimes***:
Close ball valve (item 22).
2.5.1 Insert
1. Connect the compressor to the mains
power supply.
2. Switch on the compressor at the ON/OFF
switch (item 10) or the main switch.
Compressor starts up and switches off
automatically: the compressor is ready
for use.
When the switch-on pressure is reached, the
compressor restarts automatically.
2.5.2 Compressed air bleeding
Install the elastic connecting hose between
the ball valve (item 22) and compressed air
pipe system or compressed air cold dryer.
2.5.3 After use
1. Switch on the compressor at the ON/OFF
switch (item 10).
2. Interrupt the power supply to the main
switch.
2.6 Maintenance
2.6.1 Before each maintenance task
1. Switch off compressor at the ON/OFF
switch (item 10) (if available). Discon-
nect power supply at main switch.
3. Depressurise the whole compressor:
slowly open the ball valve condensate
drainage (item 09) and close it if no
more air escapes.
2.6.2 Cleaning the compressor
• Clean the cooling fins on the cylinder, cyl-
inder head and aftercooler using com-
pressed air.
• Clean the fan impeller cover on the motor.
2.6.3 Draining condensate from pres-
sure vessel
L
Condensate is a water pollutant. Dispose
of it according to applicable regulations!
1. Place a suitable vessel under the conden-
sate drain.
2. To drain condensate, the pressure must
be approx. 2 bar.
3. Open the ball valve (item. 09) and close
it if no more condensate runs out
2.6.4 Checking the oil level
1. The oil level must be between the top
and bottom marks (oil dipstick/oil in-
spection glass). (Figure 4a)
2. Correct if necessary.
L
If oil is milky, it must be changed imme-
diately.
2.6.5 Changing/adding oil
1. Allow the compressor to warm up, switch
it off, disconnect the power supply.
2. Pull out oil filler plug or hose (item 03),
hold used oil container under the mini
Interval / No later than Tasks
See chap.
-- / As needed
Clean compressor
2.6.2
-- / after each use
Drain condensate from pressure vessel
2.6.3
daily / commissioning
Check the oil level, add oil if necessary.
2.6.4
Once after 10 h / --
Check screw connections
2.6.6
-- / Weekly
Check intake filter
2.6.7
50 h / After 6 months
Check V-belt tension (where applicable)
2.6.9
Clean intake filter
2.6.7
Change oil (1st oil change mineral or synthetic oil) 2.6.5
500 h / after 1 year
Change oil (with mineral oil)
2.6.5
Change intake filter
2.6.7
Change check valve and insert
2.6.10
Check screw connections
2.6.6
1,000 h / after 2 years
Change oil (with synthetic oil)
2.6.5
Change V-belts (where applicable)
2.6.9
2,500 h / After 5 years
Change safety valve
2.6.11
Summary of Contents for UNM STS 1000-10-270
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