Table of Contents
Advertisement
4.5
Unplanned shut-down and alarms
The system is fitted with a number of pump protection sensors that will give warnings and alarms, refer to
Sensor
Exhaust pressure transducer
- for iXH excluding systems containing the 450H
dry pump
- for all systems containing iXH450H dry pump
- for all iXL 500 systems
DP TEMP
- iXH systems containing 100 and 200 dry pumps:
Standard
T variants
- iXH systems containing 200H dry pump:
Standard and T variants
- iXH3030:
Standard
T variant
- iXH systems containing 450H and 500H dry
pumps:
Standard and T variants
- iXL250Q
- all iXL500 systems
- all iXL750 systems
DP TEMP 2
- iXH3030T
- iXH4550HT
- iXH6050HT
DP Endcover
- iXH3030T
MB Stator
- iXH610 only
- all other iXH and iXL variants
MB endcover, T variants only
Refer to
Section 4.4
for information about alarms and automatic shut-down conditions.
If the system has an unplanned shut-down, ensure that the cause of the shut-down is identified and rectified before
restarting. If you are in any doubt, contact Edwards.
Note:
The high temperature alarms on Edwards vacuum pumping systems are system protection trips and should
be considered as an abnormal running condition. If a system has tripped due to any high temperature alarm
the system should be investigated and the reason for the alarm established. Once the fault has been
remedied the system should be left for a minimum of 30 minutes before attempting to restart.
© Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Table 20 - Pump protection sensors
Warning condition triggered Alarm condition triggered
0.35 barg (5 psig)
0.2 barg (3.2 psig)
0.3 barg (4.4 psig)
0.55 barg (8 psig)
0.35 barg (5 psig)
0.4 barg (5.8 psig)
130 °C
160 °C
160 °C
160 °C
170 °C
175 °C
150 °C
139 °C
180°C
140 °C
145 °C
145 °C
100°C
60 °C
120 °C
100 °C
M561-00-880 Issue C
Table
20.
140 °C
170 °C
170 °C
170 °C
180 °C
185 °C
165°C
144 °C
190°C
150°C
155 °C
155 °C
110°C
70 °C
130 °C
110 °C
Page 43
Hide quick links:
Advertisement
Table of Contents
