Gardner Denver Wittig RFW 150 DV, Operating And Service Manual

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BA-
45.01.0 • US •01/15
5-1
5. Initial operation
5.1 Checking the system
5.2 Cooling water
5.3 Lubricating oil
5.4 Shut-off slides and valves
5.5 Rotating direction
5.6 Drive
5.7 Checking the rotation speed, vacuum and
pressure
5.7.1 Rotation speed
5.7.2 Vacuum at the vacuum meter
5.7.3 Pressure at the manometer
5.8 Lubrication oils for rotary
compressor/compressor vacuum pumps
Checking the system
Initial operation, and also the switching on of the
system after a longer standstill period (more than 4
weeks) has a great influence on the effective
functioning of the rotary compressor or the compressor
and vacuum pump.
We urgently recommend that you take sufficient time
for initial operation of the machine. Undue haste could
lead to important steps being left out, thus causing
possible damage to the machine.
For faults caused by incorrect initial
operation, no guarantee claims can be
accepted
Before initial operation

Check the machine (transport damage, faulty
assembly),

Check that the drive protection and contact
protection on the pressure side are correct,

Check the operating d
ata on the machine’s name
plate,

Instruct the operating personnel,

Pass on instructions for the operation and
maintenance of the machine,

Make sure that the rotor shaft can be turned by
hand.
Cooling water
Fill cooling water only to the highest mark on the
equalising tank or cooler. Determine the quantity
according to the cooler volume and line volume. Use
only clean tap water. Observe the instructions in
section 1.4, Water cooling!
If frost danger exists, add antifreezing
compound
as instructed by the
manufacturer (generally 33%).
Lubricating oil

For the oil type, see 5.8, table of lubricating oils .
For the RFW series, single grade oils are
prescribed. Use of multigrade oils can lead
to damage to the machine.
Such use also causes the guarantee liability
of Gardner Denver to lose its validity.

Fill the oil reservoir to approximately 3 cm below the
thread of the filling cap.

Manual pre-lubrication of the machine is necessary

before initial startup

before restart after a stoppage lasting 4 weeks
or more

after machine underwent excess vacuum

when the danger exists that the lubricant film in
the compres-sion chamber of the
compressor/vacuum pump has been removed
by components of the suction air

For pre-lubrication, proceed as follows:

Insert hand crank (in mounting) through the
open oil fill opening and place it onto the oil
pump shaft. Press down on the crank until the
driving pin snaps in. Pre-lubricate with 40
complete revolutions of the hand crank.

Return the hand crank to the mounting and
screw on the screw plug.
1. Hand crank 2. Screw plug
3. Oil pump 4. Oil drain cock
Figure 5-1: Pre-lubricating with the hand crank