Cable Size; Pictographs; Operating Instructions; Initial Start-Up - Atlas Copco LE15 Instruction Book

2.4.3 Cable size

Type Starter
LE/LF/LT15/22 DOL
LE/LF/LT40/55 DOL
LT75 DOL
LE/LT40 Y/D
LE/LF/LT55 Y/D
LE/LF/LT75 Y/D
LE/LT110 Y/D
LE/LT150 Y/D

2.5 Pictographs

1 Temperature
2 Pressure
3 On
4 Off
5 Warning: voltage
6 Switch off voltage and depressurize before maintenance
or repair
7 Read Instruction book before starting
8 Consult Instruction book for correct direction of
rotation
9 Do not adjust switch if it is depressurized
Fig. 2.27 Pictographs (typical examples)
32

3 Operating instructions

Safety precautions
2
Cable size (mm )
The operator must apply all relevant safety precautions,
2.5
including those mentioned in this book.
4
6

3.1 Initial start-up

2.5
4
6
If the compressor has not run for the past 6 months (at initial
6
start-up check the date on the data plate), it is strongly
10
recommended to improve the lubrication of the compressor
element: drain the oil, refill the compressor with the same oil
while turning the crankshaft.
Note: It is strongly recommended to install an interstage drain
kit, to remove excess condensate, on LT compressors with a
load factor less than 20% per hour. Consult Atlas Copco.
1. For Complete Units, remove the transport brackets from
2. Check the electrical installation, which must be in
3. LE/LT are filled with PAO (polyalphaolefine) compressor
4. Switch on the voltage. Start the motor.
5. On three-cylinder compressors, check for correct direction
6. Check the operation of the air pressure switch. See section

3.2 Starting

LE/LF/LT
1. On LE/LT, check the oil level, which must be near the top
2. Switch on the voltage.
3. On compressors with DOL starter, push the (I) button
4. Open the air outlet valve (AV-Figs. 1.4/1.6).
5. Regularly drain condensate (Dm-Figs. 1.4/1.7).
LE/LF/LT Trolley with electrical motor
1. On LE/LT, check the oil level, which must be near the top
2. Set pilot valve (RV-Fig. 1.12) in the unload position by
3. Attach the air lines to the air outlets.
4. Plug in and switch on the voltage at the main circuit breaker.
underneath the compressor.
accordance with the instructions given in section 2.3.
oil. Check that the oil level is still near the top of the red
circle of sight-glass (SG-Fig. 1.3). Top up, if necessary.
of rotation as indicated by the arrow on the fan housing. If
the rotation direction is wrong, switch off the voltage and
reverse two of the input line connections.
5.4 or 5.5. Check the operation of pilot valve (RV) on LE/
LF/LT Trolley. See section 5.6.
of the red circle of sight-glass (SG-Fig. 1.3). The minimum
level is the lower part of the red circle.
on top of the pressure switch.
On compressors with Y-D starter, push switch (S1-Fig.
2.21) to position (I)
of the red circle of sight-glass (SG-Fig. 1.3). The minimum
level is the lower part of the red circle.
turning the red handle 90 degrees (see section 5.6).
Instruction book
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