BWS350 System Installation, Operation & Maintenance
18
Trouble-Shooting, Continued
Water Quality Monitor will
not turn on
Dead batteries
Replace batteries by sliding Water Quality Monitor up and removing the six
screws on the back cover. Remove cover to access battteries.
RP Pump
Does Not Turn On
No power to Pump (Green LED Off
at top of Control Box - attached to
Buffer Tank bracket)
Low water level in Tank (Green LED
on Control Box is Off)
RP Pump motor brushes worn
RP Pump damaged
If LED is On, RP Pump is operational (Pump will turn on only when the Buf-
fer Tank is empty). If LED is Off, ensure power cord is plugged into an outlet
with power (check circuit breaker), & that there is water in Tank. If LED will
not turn On (with power & water in tank), there may be a problem with Low
Level Float Switch or Relay.
Allow Processor to partially fill Tank with water. Green LED indicates RP
Pump is operational, & will turn on when Buffer Tank is empty.
Try bumping the RP Pump with your hand. If it turns on temporarily, the
brushes are probably worn. Order & install Brush Kit 704-39905.
(Green LED is On, Buffer Tank is empty) If bumping RP Pump yields no
response, Pump could be damaged or brushes may still be worn. Call for
service.
RP Pump runs
intermittently or rough.
Air trapped in pump head.
RP Pump motor brushes worn
Unplug pump temporarily and open downstream valve to empty Buffer Tank.
See “RP Pump motor brushes worn” above.
RP Pump cycles on-off
frequently
Low air pre-charge in Buffer Tank
(possible on aged system)
Empty Buffer Tank and re-charge air pressure to 20 psi.
Electrical Schematic, Low Level Float Switch / RP Pump Circuit
AC
RP Pump
4.8 SFA
Low Level
Float Switch
Heat Sink – Aluminum
1.6"x4.6"x0.125"Thick
A
F
B
C
E
D
Indicator Lamp
(Illuminated when pump is armed and tank has water in it)
Relay
