Xylem WTS - Manual (Page 17)

Operating instructions
WTS 102/3-en 15
should be particularly taken into account. If necessary, the written agreement of the manufacturer
must be obtained.
Faults Code no. for cause and method of repair
Discharge too low 1, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14
Discharge stops after a time 8, 10, 11, 21
Head too low 2, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 21, 24
Head too high 3, 5, 24
Drive mechanism overloaded 2, 3, 5, 14, 17, 19
Pump not running quietly 7, 10, 13, 15, 16, 17, 20, 21, 23
Temperature in the pump too high 7, 10, 21
Temperature at the bearing too high 2, 3, 16, 17, 18, 20, 22
Meaning of code number for cause and method of repair
1.
Back-pressure too high
•
open discharge valve further
• reduce resistance in discharge pipe (e.g. clean filter if necessary)
• use larger impeller (note available motor power)
2.
Back-pressure too low, discharge too low
•
throttle discharge valve
3.
Speed too high
•
reduce speed
• compare speed of motor with specified pump speed (rating plate)
• when adjusting speed (frequency transformer) check reference value setting
4.
Speed too low
•
increase speed (check available motor power)
• compare speed of motor with specified pump speed (rating plate)
• when adjusting speed (frequency transformer) check reference value settings
5.
Impeller diameter too large
•
use smaller impeller
6.
Impeller diameter too small
•
use larger impeller (check available motor power)
7.
Pump and/or pipes not completely filled with liquid
•
fill
• vent
8.
Pump blocked
•
clean