Davey UV70 Steriflo UV, Ultra Violet Water Treatment Systems - Manual (Page 10)

10
Trouble Shooting
Principle. An electronic ballast (choke) provides the correct voltage and current for
the lamp. The circuit board monitors the current to the lamp and if it is not present,
illuminates the red alarm light and sounds the alarm buzzer (a “squealing” noise).
An orange light indicates the power is on.
a) UV LAMP OUT, NO ORANGE “ON” LIGHT, NO ALARM
1. No mains voltage.
2. Internal fuse failed.
3. Check mains power connections inside power supply.
b) UV LAMP FLICKERING, ALARM ON
1. Failed lamp.
2. Poor electrical contact to lamp.
c) UV LAMP OUT, ALARM ON
1. Lamp failed.
2. Poor connection to lamp (check/clean connector/lamp pins).
3. Ballast failed (unlikely).
d) LAMP ON, ALARM ON
1. Faulty circuit board.
e) LAMP OUT, ALARM OFF
1. Loose connection or faulty circuit board, possibly short in lamp circuit.
Specifications
Flow range UV50: 0-50 l/min
Flow range UV70: 0-70 l/min
Water temperature range: 8-35
o
C
Water pressure: 0-860 kPa
Operating voltage/frequency: 220-240v / 50Hz
Power consumption: 45 W
Lamp life: 9,000 hours (1 year’s running)
Spare Parts
Lamp: GPH550N2W
Sleeve: TT600
End nut: S333A
Cover plate: S334A
Lamp connector and lead: S486
Oring: S24x3N70
White pressure ring: S113
WARNING: When servicing or attending your Steriflo ® , always
ensure power is switched off and lead unplugged. Electrical
connections should be serviced only by qualified persons. If any
electrical supply lead is damaged, it must only be replaced by an
electrically qualified person.
Care should also be taken when servicing or disassembling the
unit and associated pipework to avoid possible injury from
pressurised water. Unplug power, relieve pressure by opening a
tap on the discharge side of the unit and allow any water in the
unit to cool before attempting to dismantle.