KSB CHTRa, Инструкция по установке и эксплуатации

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CHTRa
10.2.4 Interlock criterion for rolling element bearings
The specified interlock criteria are applicable if resistance thermometers or
thermocouples are used.
NOTE
Do not open bearing temperature measuring connections 4M.7 and 4M.8 while
pump is running. All values stated are based on normal ambient temperature
Permissible temperature limits for rolling element bearings
▪
Radial rolling element bearings and thrust rolling element bearings
▪ Oil lubrication: oil ring lubrication
▪ Minimum start-up temperature in oil sump
– 10 °C (ISO-VG 32/ ISO-VG 46)
– 50 °F (ISO-VG 32/ ISO-VG 46)
Table 29: Temperature limits/tripping temperatures of rolling element bearings [°C]
Temperature measurement Alarm Tripping/shutdown
On outer bearing ring 80 90
In oil sump 70 80
Table 30: Temperature limits/tripping temperatures of rolling element bearings [°F]
Temperature measurement Alarm Tripping/shutdown
On outer bearing ring 176 194
In oil sump 158 176
10.2.5 Permissible vibrations on bearing housings
The vibration values specified are valid for pump variants with plain bearing or
rolling element bearings and grouted baseplates. They are based on the proper
installation of the pump (set) in accordance with this manual. Improper isolation of
pump (set) and building/plant and/or an inappropriate piping layout may increase
noise emission and/or the vibration level.
Limit values
7)
for unfiltered vibrations (vibration level) in the preferred operating
range.
Q = 0.5 X Q
opt
to 1.25 X Q
opt
Table 31: Vibration velocity RMS [mm/s]
Measuring point Standard Alarm Tripping/shutdown
On bearing housing 3 6 8
Table 32: Vibration velocity RMS [inch/s]
Measuring point Standard Alarm Tripping/shutdown
On bearing housing 0,12 0,24 0,32
NOTE
An increase in vibration of 30 % of the values specified is allowed for flow rates
outside the preferred but within the permissible operating range.
Limit value (guaranteed value) for vibration velocity:
The limit value for guaranteed effective vibration velocity v
eff
is 4.5 mm/s (RMS).
8)
7) As per API 610/10, values Table 7; these values do not apply to minimum flow operation.
8) The values correspond to the limit value stipulated for zone B in Part III of DIN ISO 10816-1 (August 1997 edition).