Gardner Denver Elmo Rietschle 2BH11, Operating Instructions Manual

Page: 33 / 44

Commissioning
7
© Gardner Denver Deutschland GmbH
33 / 44
08.2019 · 610.44434.40.000
Commissioning
Measures after a long shut-down period
Replace ball bearings and radial shaft seal
!
When the downtime exceeds 4 years since the last commissioning.
1. Replace the rolling bearing.
2. Clean adjacent bearing areas for open ball bearings and re-grease.
3. Replace and grease the radial shaft seal.
If the standstill conditions vary (Storage [
➙
20]), a reduced ball bearing service life
is to be expected.
Measuring the motor insulation resistance

Measure the insulation resistance of the motor at 500V DC voltage between
the conductors of the main circuit and protective conductive system.
 Value ≥1 MΩ: no measures necessary.
 Value <1 MΩ: Dry winding.
Tests during commissioning or re-commissioning
CAUTION
Overpressure!
Overpressure during the leak test can damage the G-BH1 | G-BH9.

To test the plant for leaks, the G-BH1 | G-BH9 must be excluded.

Prior to commissioning or recommissioning of the G-BH1 | G-BH9, check
that:

The G-BH1 | G-BH9 is properly fitted and aligned.

Rotating components move freely.

Auxiliary ventilator (if available) is ready for operation.

Pipes and hoses are correctly connected.

Attachments, screw fittings and electrical connections are fixed at the given
tightening torques.

The operating conditions match the rating plate details given above.

The maximum speeds are monitored and adhered to through the control.

Protection measures against accidental contact have been completed.

Cooling air supply is not affected.
Check the direction of rotation
Test the direction of rotation of the compressor
1. Switch on the G-BH1 | G-BH9 briefly and then switch it off again.
2. WARNING! When the electrical connection is incorrect: Risk of injury
as a result of being pulled or sucked in! Do not perform the overpressure
test with your hands!
Perform the overpressure test on the gas outlet using a piece of paper (item
N2.0, [
➙
14]).
 Overpressure present: direction of rotation is correct, no measures
 Negative pressure present: Direction of rotation incorrect, change direction
of rotation by interchanging two phases of electrical supply line
7
7.1
7.2
7.3