3500/42 Operation and Maintenance
Maintenance
91
5.1.1
Choosing a Maintenance Interval
Use the following approach to choose a maintenance interval:
Start with an interval of one year and then shorten the interval if any of the
following conditions apply:
- the monitored machine is classified as critical.
- the 3500 rack is operating in a harsh environment such as in extreme
temperature, high humidity, or in a corrosive atmosphere.
At each interval, use the results of the previous verifications and ISO
Procedure 10012-1 to adjust the interval.
5.1.2
Required Test Equipment
The verification procedures in this section require the following test equipment.
Radial Vibration Channels
- Power Supply (single channel)
- Multimeter - 4½ digits
- Function Generator
- 100
µ
F capacitor
- 40 k
Ω
resistor
- Bently Nevada Corporation TK 16 Keyphasor Multiplier/Divider or equivalent
(Instructions in this manual refer to the TK 16)
- additional -18 Vdc Supply for use with the TK 16
- 2 Channel Oscilloscope
Thrust Position and Differential Expansion Channels
- Power Supply (single channel)
- Multimeter - 4½ digits
Eccentricity Channels
- Power Supply (single channel)
- Multimeter - 4½ digits
- Function Generator
- 100
µ
F capacitor
- 40 k
Ω
resistor
Velocity Channels - Seismoprobe
- Power Supply (single channel)
- Multimeter - 4½ digits
- Function Generator
- 2.49 k
Ω
resistor
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