Sita SINGLE LAMP Series User manual

ULTRAVIOLET DISINFECTION
EQUIPMENT FOR THE TREATMENT OF DRINKING WATER
SINGLE LAMP AL-AL2
Chamber Mod. 405-405C-412-440-480
Power supply model: AL-AL2
MANUAL OF INSTALLATION, USE AND SERVICING
English 03-2022 Rev.C

1
INDEX
1. Introduction.........................................................................................................................................................1
2. General Principles................................................................................................................................................2
3. Instruction for installation and setting at work ........................................................................................................3
3.1 Installation scheme recommended.................................................................................................................4
4. UV Installation ....................................................................................................................................................5
4.1 UV chamber assembling ..............................................................................................................................5
4.2 Lamp connection.........................................................................................................................................6
4.3 Detailed drawing of the UV-Chamber...........................................................................................................7
5. Electrical scheme.................................................................................................................................................8
6. Display Information (Troubleshooting)..................................................................................................................9
6.1 AL version (without display)........................................................................................................................9
6.2 AL2version (with display) ........................................................................................................................ 10
7. Technical data sheet.......................................................................................................................................... 12
8. Maintenance..................................................................................................................................................... 12
9. Warranty Conditions ......................................................................................................................................... 14
10. Declaration of Conformity EC............................................................................................................................ 15
1. Introduction
This manual is for the following models of SINGLE LAMP AL-AL2 SERIES:
This Pressure UV Systems is manufactured by S.I.T.A. s.r.l.
Warning: This equipment requires regular maintenance to ensure the requirements of the drinking water
treated and the maintenance of the improvements as stated by the manufacturer.
These operating instructions contain important information for the operation and maintenance of the
equipment.
Please ensure that these operating instructions are carefully read by all relevant persons before putting
into operation, to ensure the safe use of the UV system. The operating instructions are an integral part of
the equipment supply.
Before putting into operation, all the conditions necessary for safe operation of the equipment must be
fulfilled.
The installation, commissioning and maintenance of the equipment should only be carried out by
qualified personnel.
The equipment should only be operated by authorized personnel who have been trained accordingly.
No modifications should be made to the equipment without consulting S.I.T.A., as this could effect the
safe operation of the unit. S.I.T.A. shall not be held responsible for damage resulting from unapproved
modifications.
INSTRUCTION:
The operating instructions are to be kept where they will be accessible for operating and
maintenance personnel.

2
2. General Principles
Information about UV irradiation
The UV sterilizers of the SINGLE LAMP series have been planned specially for destroying harmful
bacteria and viruses present in your water.
Their working is based on a physical principle which is a warranty of security: the output of ultra-violet
irradiation.
The UV light given out by special mercury fumes lamps (UV-C rays = 254nm) is highly germicidal
because it interacts with DNA and RNA, at a molecular level.
The deep bio-structural disorder caused by such irradiation interferes with the development and the
ability of reproduction of every kind of micro-organism, making it harmless.
Generally it is better to mount a pre-filter before the UV sterilizer, in this way the impurities of every
nature and consistence are kept.
This system comes to be necessary if we want to have a high degree of sterilization, infact the non-
filtration and removal of suspended particles in the water has, as a consequence, a decrease of the
sterilizer's efficiency.
If the water to be treated contains sulphydric acid or more than 0.3 p.p.m. of iron or filtrable solids, once
passed through the sterilizer,
it leaves a residual sediment on the quartz sleeve, which, therefore, must be periodically cleaned (the
frequency depends on the quantity and quality of water treated).
General directions
According to the European rules EN 60204-1 (safety of the set-up off the electrical equipment-general
rules) the low tension electrical instruments (rule 2006/95/CE) must be connected to a current-tap
provided with grounding.
Safety direction
The light of ultra-violet lamps can cause serious burns to unprotected skin and eyes, therefore
it is recommended not to connect it to the current tap without having before ensured the UV
lamp in its housing and inserted the PVC cover.
Indications for the disposal
We remind that, according to what is fixed by D.L.25 july 2005, № 151 “Accomplishment of directives
2002/CE, 2002/96/CE and 2003/108/CE, concerning the reduction of the use of dangerous substances in
electric and electronic equipments, and the disposal of waste” both mercury vapors lamps and electrical
panels, when no more used, must be considered as special waste, and in the same way disposed of.
To do that, it is possible to address to specialized centers for the recovery of dangerous materials, or to
contact directly our technical department.
INFORMATION TO USERS pursuant to art. 14 of the 2012/19 / EU DIRECTIVE OF
THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 4 July 2012 on waste
electrical and electronic equipment (WEEE)
The crossed bin symbol on the appliance or on its packaging indicates that the product at
the end of its useful life must be collected separately and not disposed of together with other mixed urban
waste.
Please contact your municipality, or local authority, for all information regarding the separate collection
systems available in the area. The retailer is obliged to collect the old equipment free of charge when
buying new equipment of an equivalent type, for the purpose of starting the correct recycling / disposal.

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Appropriate separate collection for the subsequent start-up of the disused equipment for recycling,
treatment and environmentally compatible disposal helps to avoid possible negative effects on the
environment and on health and favors the re-use and / or recycling of the materials it is composed of the
equipment.
3. Instruction for installation and setting at work
General premise: The installation of the SINGLE LAMP sterilization units must be carried out by
specialized staff, scrupulously following the instructions hereby given. It has been moreover considered
necessary to give some general information about the electrical and water connections.
Cautions: check that the UV panel is not connected to the power supply and that the tap of the water to
be treated is turned off.
•Connect the delivery of the water to be treated to the special water connection
•Turn on water and check for possible leaks in any part of the unit
•Connect the plug to the current tap
•Check that the disinfected water comes out and that the LEDS on the panel of the control board, signal
the correct working
Let the disinfected water flow down to outlet for at least 10 minutes before using it, in order to make the
possible impurities present in the unit drain out.
NOTE: it is recommended to install a water filter directly before the UV sterilizer in order to remove the
suspended particles, eventually present in the water to be treated, which could limit the efficiency of
sterilization.
CHECKS
The SINGLE LAMP UV System is ready for producing disinfected water, once the connection to the
water system and to the electrical grid is carried out. The unit works automatically, the electronical
boards which control the signals reaching the control panel, allow the visualization (or the
sonorization) of the correct working or of anomalies which may occur during the operating of the unit.

4
3.1 Installation scheme recommended

5
4. UV Installation
4.1 UV chamber assembling
Mount the valves kit supplied with the system .
Unscrew the sleeve bolts:
Insert the quartz sleeves carefully centring the spring at the bottom plate of the UV chamber:
Insert the o-ring Ø 23x4 into the quartz sleeve:

6
Screw again the sleeve bolts and insert the lamp holder spring into the sleeve:
Carry out the hydraulic test, verifying that o-rings are watertight and that there’re not water leaks
outside the sleeve bolts or inside the quartz sleeves. Insert the UVC lamp into the quartz sleeve:
Important!
Handle the lamps using gloves
4.2 Lamp connection
Connect the lamp socket to the lamp, place the ground wire in the slot along the sleeve bolt and connect
its terminal to the M4 bolt welded on the UV chamber, insert the contact cover bringing it up to the
beat, then rotate it in closed position.
Finally connect the power cable to the socket

7
4.3 Detailed drawing of the UV-Chamber
3
IN
2
D
OUT
1
C
BA
M
M
E
F
G
L
H
N
028104 028105
028102 028103
CODE/CODICE
QUARTZ SLEEVE/ QUARZO
DESCRIPTION / DESCRIZIONE
UV LAMP/ LAMPADA UV
RIF.
A
B
028060D 028036 028088 028061 028034D
028034D/K
SLEEVE BOLT/ BLOCCAGUAINA
CONTACT COVER KIT
E + G + 1 m LAMP CABLE
SPRING/ MOLLA
CONTACT COVER/ COPRICONTATTO
G
FOUR-PIN HOLDER / QUADRIPIN
O-RING 23x4/ O-RING 23x4
C
D F E
POWER SUPPLY (SCHUKO - U.K. -
AUS - NO PLUG)
H L
028060D 028036 028061 028088
028034D/K
028034D
026427/B
CLIP/ CLIP
M026427/B
V141
O-RING/ O-RING
NV141
028102C 028103C
028060D 028036 028061 028088
028034D/K
028034D
026427/B
V141
UV 412 AL
CODE/CODICE
UV 405 AL
CODE/CODICE
UV 405C AL
028104 028105
028060D 028036 028061 028088
028034D/K
028034D
/
V141
028124 028105
028060D 028036 028061 028088
028034D/K
028034D
/
V141
CODE/CODICE
UV 440 AL
CODE/CODICE
UV 480 AL
2740/** 2740/** 2740/** 2740/** 2756/**
POWER SUPPLY
AL
AL2
****/S
****/YS ****/A ****/U ****/Z ****/YU
AL - SHUKO PLUG
AL2 - SHUKO PLUG AL - AUS PLUG AL - UK PLUG AL - NO PLUG AL2 - UK PLUG
****/YA ****/YZ
AL2 - AUS PLUG AL2 - NO PLUG
POWER SUPPLY

8
5. Electrical scheme

9
6. Display Information (Troubleshooting)
6.1 AL version (without display)
ANOMALY
POSSIBLE CAUSES
SOLUTIONS
NO SIGN OF LIFE
❑NO FEED
❑BURNED FUSES
❑CHECK
❑REPLACE:
RED LED ON
❑LAMP DISCONNECTED
❑EXHAUSTED LAMP
❑DEFECTIVE LAMP LIGHTER
❑CHECK
❑REPALCE
405-405C-412-440-480 AL
405-405C-412-440-480 AL2
Vertical
405-405C-412-440-480 AL2
Horizontal

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6.2 AL2version (with display)
DISPLAY MESSAGES –Start up:
No Power (Connect to power supply)
Identification of the software revision
Working days count down (lamp life 1 year)
DISPLAY INFORMATIONS –Working hours:
Press (◄┘) for less than 1 sec to show the lamp working hours:
Working days count down
System Total Working Days
DISPLAY ALARMS –Troubleshooting:
AL1: Indicates the end of lamp life(count-down timer shows 0 days). In such case replace the lamp
and restart the working days count down.
To restart the working days count down replace the lamp and press and hold for less than 5 seconds the
(◄┘) button. The value of the days-meter will start to flash. Within 5 sec press again the button to
confirm the days-meter reset.
ATTENTION: Do not replace the lamp with powered panel!!!
Press and hold for more than 9 seconds the (◄┘) button to silence the alarm for 7 days (max 4 times).
Working days count down (lamp exhaust)
Alarm + Buzzer
Working days count
down (restarted)
01.0
365
365
012
000
AL1
AL1
365
Press Ok < 1 sec
(◄┘)
Press and Hold > 9 sec.
(◄┘)
to stop the buzzer
Keep pressed for less than
5 sec. (◄┘).
The value of the days-
meter will start to flash.
Within 5 sec press again
the button to confirm the
days-meter reset.
Alarm AL1
Event

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Note: if within 5 sec it is not "confirmed", the days-meter comes back to the current counting value
AL2: Indicates lamp failure. Check:
o Lamp connection.
o If lamp is burned by testing another lamp.
o If lamp starter has failed by testing a new lamp.
In case of lamp replacement press and hold for less than 5 seconds the (◄┘) button to restart the
working days count down.
ATTENTION: Do not replace the lamp with powered panel!
Press and hold for more than 9 seconds the (◄┘) button to silence the alarm for 7 days (max 4
times).
Working days count down
Alarm + Buzzer
Remaining working days of the
lamp. Keep pressed for less than
5 sec. (◄┘).
The value of the hour-meter
will start to flash.Within 5 sec
press again the button to
resetthe hour-meter.
Note: if within 5 sec it is not
"confirmed", the hour-meter
comes back to the current
counting value
Reamining lifespan of the lamp
(restarted)
DISPLAY OFF: The fuse of the pcb is blown. Unscrew the cap of the power supply box.
Open the small black box closed to the power supply plug (see picturebelow), replace the fuse:
113
AL2
AL2
113
365
Press and Hold > 9 sec.
(◄┘)
To stop the buzzer
Fix AL2 alarm, cut power
and give power again
Alarm AL2
Event

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7. Technical data sheet
GENERAL INFORMATION
405
405C
412
440
480
Max flow rate (l/min)
20
30
45
60
85
UVC transmittance
99%- 1 cm
UVC dose
300 J/m2
Water Temperature range
5-50° C
Total consumption (W)
28
33
44
44
88
Mounting
Vertical or horizontal
Quartz sleeve cleaning system
Manual
NO
ON request (only 440-480)
UV REACTOR
Material
Stainless Steel 304 (optional 316L)
Connections
¾” M
¾” M
1” M
1 ½” M
1 ½” M
Drain/Air Valve
1/8” - 1/2" M thread
Total Volume (l)
1
1,6
1,8
7,9
7,9
Total weight (kg)
1,5
1,8
2,5
6
6
Max working pressure
10 bars g
Protection class
IP 55
Shape
U
U
U
Z
Z
Flow direction
From bottom to top
UV LAMP
Number
1
Lifespan
365 days
Type
028102
028102C
028104
028104
028124
CONTROL PANEL
AL-AL2
Material
Thermoplastic (Bromine/Chlorine free; UL94 flame rating V0)
Dimensions (mm)
217 x 118 x 61 mm
Protection class
IP 54
Ambient temperature range
5 –45 °C
Power supply
100-265V - 50/60 Hz
Lamp cable length
1 m
Power supply cable
1 m
Feed plug
SCHUKO, UK or no plug
Monitor display (only AL2)
Digital SITA
Days meter (only AL2)
Yes for total system life
Resettable days meter (only AL2)
Yes for lamp life control
Audio alarm (only AL2)
With silence options
Alarm Digital Output (only AL2)
Optional N/O max 100 mA-250V
Rev. 03-2022
8. Maintenance
The UV System of SINGLE LAMP series have been projected and realized by productor with simple
and functional principles which make the checking procedures and the periodical servicing particularly
easy.
The main points which characterize the ordinary servicing are the following: check quarterly the quartz
sleeves, which contain the UV lamps, in order to ensure the maximum disinfection, for the cleaning.
Maintenance work may only be carried out by personnel who have been trained and authorized for this
work by the owner and/or user. The owner and/or user must ensure that the maintenance personnel are
familiar with the safety measures and regulations, and that they also comply with them, in addition to
having read and understood the operating instructions.

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Only original replacement parts from the supplier must be used. The following are the recommended
service intervals for replacement parts:
UV lamp change - once per 365 days.
UV quartz sleeve clean - frequency depends on the quality of the water.
O-ring for quartz sleeve-once per year.
Procedure for the UV lamp replacement (365 days max.)
1) disconnect the electrical box from the electrical grid
2) lift the cover slightly turning, carefully loosen the electrical 4-pins connection, and extract the
lamp from the quartz sleeve
3) remove the lamp from the packing, handling it carefully by its ends
4) insert the new lamp into the quartz sleeve of the UV System
5) connect the lamp to the electrical connection and put again the cover
6) connect again the equipment.
Note: for the replacement of the lamp it is not necessary to turn water off
Procedure for the quartz sleeve cleaning
1) disconnect the electrical box from the electrical grid and turn off water
2) remove the lamp, as for the replacement
3) unscrew the sleeve-bolt and extract the quartz sleeve with care
4) clean the quartz sleeve by wiping it with a cloth soaked with an acid solution such as
vinegar or lemmon
5) reassemble the sleeve being sure to center the guide-spring fixed on the bottom, put the o-ring
on the quartz sleeve, then tighten the sleeve-bolt; place the o-ring in the seat of the sleeve-bolt,
insert the sleeve inside it, till it leans, then screw on the S/S chamber.
6) turn on water checking for eventual leaks
7) remount the lamp, its electrical connection and cover
8) turn on the sterilizer.

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9. Warranty Conditions
WARRANTY CONDITIONS
SITA works in compliance with ISO 9001-2015 quality procedures and subjects all equipments to
accurate checks and tests.
The SITA supplies and progressing are anyway guaranteed only in the limits of technical
specifications and request and/or of the certificates and/or of the specific checks as agreed, for
24 months from the delivery date or 30 days from the purchase date, provided that eventual
defects are stated as fixed by art. No. 1495 of the civil code.
The stainless steel chamber is covered by warranty of 5 years only if used for compatible
liquids and correctly installed.
In no case the integral replacement of the product is forseen and any responsibility of sita is excluded
for delays in the delivery of the goods to the customer, for claims of third parties towards the
customer, for losses of goods, costs (installation, servicing and maintenance, transports, and so on)
and damages of the customer due to the defect.
Moreover the product repaired or tampered by non-authorized third parties, and the product on which
an intervention has been made for defect of for convenience tests, is excluded from the warranty.
Repairs are normally carried out in SITA warehouse or in authorized after-sales service centers
signalled by SITA.
The warranty does not cover:
1. Accidental breakages due to the transport.
2. Breakages due to the use of equipments not in compliance with what is indicated on the use and
maintenance manual or to carelessness.
3. Breakages to the connection to a power grid feeded with a tension different than the foreseen
one (±10% of the nominal value as fixed by CEI rules)
DO NOT TAMPER THE ADHESIVE LABELS OF IDENTIFICATION
The adhesive label with the QC (Quality Control) number must be intact and readable; such number
allows to enter the data bank of tests and to find the values obtained in the electrical test of the
equipment.
The adhesive label with the S/N (Serial Number) number must be intact and readable; such number
allows to enter the data bank of tests and to find the values obtained in the hydraulic test of the
equipment.
In case of dispute the court of Genova will be competent.

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10. Declaration of Conformity EC
Unit produced in the factory of:
S.I.T.A.
Italian Company for Water Treatment
EC DECLARATION OF CONFORMITY
The undersigned hereby declares, under full responsibility, that the unit:
UV STERILIZER
SINGLE LAMP SERIES
Chamber Mod. 405-405C-412-440-480
Power supply model: AL-AL2
IS IN COMPLIANCE WITH
•2014/35/UE (low voltage directive)
•2014/30/UE (electromagnetic compatibility)
•2015/863/UE (RoHS3)
•2012/19/UE (WEEE)
•IEC -EN 60204-1 norms (safety of machinery-electrical equipment of machinery)
•IEC -EN 55022 norms (characteristics of radio interference)
•D.M. 14 June 2017 (Implementation of Directive 2015/1787/UE on the quality of
water intended for human consumption)
•2014/68/UE (art.4 comm.3) (PED)
The validity of CE marking is subordinated to the equipment integrity. Any modification,if not
authorized,will cancel the use of the CE marking.This will occurs in case the relevant risks have not
been previously analyzed by our company,and a new EC Declaration of Conformity has been issued.