Flowserve ER 50-1 - Manual (Page 16)

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. Check the switching function “High Level Alarm (HW)” of the electrode tip 4 .
For this purpose raise the water level in the vessel above the high water mark. As soon as the water
exceeds the high level mark the level switch must trigger a high level alarm.
. Check the switching functions “Pump ON” and “Pump OFF”, see table “Functions”.
Commissioning
. Make sure that the system ER 50-/ ER 56- has been wired in accordance with the wiring diagram,
Fig. 11.
. Make sure that the mains supply corresponds to the wiring carried out on the equipment.
Checking electrical connection
Checking the assignment of the switching functions
Operation
ER 50-1, ER 56-1
Operation in conjunction with level switch NRS - for fill and discharge control with first low level
alarm.
Operation in conjunction with NRS -5 for fill and discharge control with high-level alarm.
Operation in conjunction with NRS - as first low-level alarm and high-level alarm in (pressurised) hot
water and steam plants to TRD 40, TRD 60, TRD 604, EN 95, EN 953 or according to national
regulations.
Operation in conjunction with NRS -3 as water level limiter with test button for steam boilers up to
max. 0.5 bar or in feedwater or condensate tanks.
Note
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Should malfunctions occur during the commissioning procedure refer to chapter
“Troubleshooting” on page 7 in order to analyse and correct them.
Water level limiter