II/10
UNM Base / CPM Base
GB
pressure must be 2 - 3 bar.
3. Open condensate drain valve (item 09).
4. Close condensate drain valve again fol-
lowing condensate drainage.
2.6.4 Checking the oil level
• The oil level must be between the top and
bottom marks (oil dipstick/oil inspection
glass) (Figure 7a).
• Correct if necessary.
If oil is milky, it must be changed immedi-
ately.
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/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.
Recommendation: mineral oil Art. No.
B111002, synthetic oil Art. No. B111006.
No guarantee can be provided if the
wrong oils are used.
Do
not
mix synthetic and mineral oil:
compressor damage is possible!
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).
2.6.7 Cleaning the intake filter
See instruction manual, part 1.
Do not purge the intake opening. No for-
eign objects may enter.
Never operate the compressor without an
intake filter.
2.6.8 Checking, adjusting the V-belt
tension
V-belt driven compressors:
1. Switch off the compressor. Disconnect
the power supply.
Checking V-belt tension:
Using a suitable blunt tool (spanner wrench),
press V-belt at top centrally and downwards
between V-belt discs. It may not give more
the width of the V-belt (Figure 8a).
Adjusting V-belt tension:
1. Remove outer belt guard grating.
2. Mark the position of the electric motor on
the base plate.
3. Unscrew the mounting screws of the mo-
tor (Figure 8b).
4. Move the motor towards the compressor
unit. Take off the V-belt.
5. Push the motor approx. 2 mm parallel
past the mark. Tighten the mounting
screws.
6. Fit the V-belt over the small V-belt disc
first, then stretch it over the large V-belt
disc.
7. Check the V-belt tension and repeat the
process if necessary.
8. Install outer belt guard grating.
2.6.9 Cleaning/replacing the check
valve
1. Unscrew the locking screw (Figure 6a).
2. Clean insert, replace in case of damage,
squeezing or hardening.
3. Clean seat, replace complete check valve
if damaged.
2.6.10 Replacing the safety valve
1. Detach the safety valve (item 11) by un-
screwing it anticlockwise.
2. Apply Loctite® 243 to the thread of the
new safety valve or wind Teflon tape
around the valve.
3. Screw the new safety valve into place by
screwing it clockwise.
2.7 Decommissioning
2.7.1 Preservation
Oil-lubricated compressors: compressor is
taken out of service for a long period (over 6
months) or is new from the factory and will
not be operated until much later.
1. Replace oil with corrosion inhibitor oil
(viscosity SAE 30). See Chap. 2.6.5.
2. Allow the compressor to warm up, switch
it off, disconnect the power supply.
3. Drain the condensate, depressurise the
compressor.
4. Prior to returning to operation, replace
corrosion inhibiting oil with compressor
oil.
Summary of Contents for A202002
Page 2: ......
Page 7: ...1a...
Page 16: ...I 8 UNM Base CPM Base RUS 10...
Page 59: ...UNM Base CPM Base II 43 RUS 2 7 2 2002 96 EG 2 8 A B C A D 2 4 4...
Page 60: ...II 44 UNM Base CPM Base RUS E 2 6 3 F G 2 6 9 H 2 6 3 E I J...
Page 61: ...UNM Base CPM Base II 45 RUS 2 9 K L 2 6 8...
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