Schneider Airsystems UNM STV 650-10-270 Notice D'utilisation D'origine page 30

GB
UNM STH/STV
Interval
50 h
500 h
1,000 h
2,500 h
2.6.1 Before each maintenance
task
1. Switch on the compressor at the ON/OFF
switch (item 10). Disconnect the power
supply.
2. Interrupt the power supply to the main
switch.
3. Depressurise the whole compressor:
open the ball valve at the condensate
drainage point (item 09) slowly. Close
the ball valve when the air flow stops.
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
pressure vessel
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 may
be no more than 2 bar.
3. Open the ball valve (item 09).
4. Close the ball valve when the flow of con-
densate stops.
2.6.4 Checking the oil level
For compressors with an oil dipstick, pull the
dipstick out.
II/12
No later than Tasks
Weekly Check intake filter
After 6 months Check V-belt tension (where applicable)
Clean intake filter
Change oil (1st oil change)
After 1 year Change oil (mineral oil)
Change intake filter
Change check valve and insert
Check screw connections
After 2 years Change oil (synthetic oil)
Change V-belts (where applicable)
After 5 years Change safety valve
1. The oil level must be between the top
and bottom marks (oil dipstick/oil in-
spection glass). (Figure 4a)
2. Correct if necessary.
In very unfavourable conditions, condensate
may find its way into the oil. This can be
identified by milky oil. In this case, the oil
must be changed immediately.
2.6.5 Changing/adding oil
1. Allow the compressor to warm up, switch
it off, disconnect the power supply.
2. Pull out the oil filler plug or oil dipstick
(item 03), hold the used oil container un-
der the oil filler plug (item 04), screw
open the oil drain screw, drain used oil
completely.
3. Screw the oil drain screw closed.
4. Add the prescribed quantity of oil.
5. Check the oil level, correct if necessary.
Insert the oil filler plug or oil dipstick.
6. Dispose of used oil according to applica-
ble regulations.
As the mineral oil, we recommend Art.
No. B111002, synthetic oil Art. No.
B111006. Using incorrect oils shall void
the warranty.
Mixing synthetic and mineral oil can dam-
age the compressor!
2.6.6 Check screw fittings
1. Check all screw connections for tight fit
and retighten if necessary.
2. Observe the tightening torques (tighten-
ing torques calculated according to VDI
2230).
See
chap-
ter
2.6.7
2.6.9
2.6.7
2.6.5
2.6.5
2.6.7
2.6.10
2.6.6
2.6.5
2.6.9
2.6.11