Flowserve SRL63-A - Manual (Page 13)

13
Start-up, Operation, Alarms and Testing
– continued –
SRL 63-a
– continued –
Operation
Interval time is running. No pilot lamp is alight. Trouble-free operation
Interval time expires and begins
again. Green pilot lamp "Standby" is
alight. Standby period is running.
Perform the purging process
as shown on the PLC display. Green pilot lamp "Standby"
flashes; yellow pilot lamp
"Bypass" is alight. Purging time is running.
Low-level limiter is bypassed.
Purging
Val D OPEN
Val E CLOSED
Val F CLOSED
Status on the PLC display in chronological order
Purging
Val D OPEN
Val E CLOSED
Val F OPEN
Purging
Waiting for LW alarm
...37 sec.
Purging
Val D CLOSED
Val E CLOSED
Val F OPEN
Purging
Val D CLOSED
Val E OPEN
Val F OPEN
Purging
Val D OPEN
Val E OPEN
Val F CLOSED
End of purging process Green and yellow pilot lamps
(Standby / Bypass) are extin-
guished. Bypassing of low-level limiter is
cancelled.
Low-level limiter (LW)
Output contact: level switch
NRS 1-7 / NRS 1-9
Valve D
Valve E
Valve F
Boiler
LW
Setting shown for the
valve limit switches:
Valves in normal
operational position;
low-water level
(electrode exposed)