Sita AL2 Series Reference manual

ULTRAVIOLET DISINFECTION
EQUIPMENT FOR THE TREATMENT OF DRINKING WATER
SINGLE LAMP AL2SERIES
405C AL2- 405 AL2- 412 AL2
MANUAL OF INSTALLATION, USE AND SERVICING
English 08-2019 Rev.D

1
INDEX
1. Introduction.........................................................................................................................................................2
2. General Principles................................................................................................................................................3
3. Instruction for installation and setting at work.........................................................................................................5
3.1. 3.1 Installation scheme recommended ...........................................................................................................7
4. UV Chamber Installation ......................................................................................................................................8
4.1. 4.1 Assembling of the UV chamber...............................................................................................................8
4.2. 4.2 Detailed drawing of the UV-C chamber ...................................................................................................8
5. Models drawing...................................................................................................................................................8
4.2. UV chamber drawing.....................................................................................................................................10
6. Electrical scheme ...............................................................................................................................................13
7. Display Information (Troubleshooting) ................................................................................................................14
8. Technical data sheet ...........................................................................................................................................16
8.1. 8.1 UV 405 AL2........................................................................................................................................16
8.2. UV 405C AL2...........................................................................................................................................17
8.3. UV 412 AL2..............................................................................................................................................18
9. Warranty Conditions ..........................................................................................................................................19
10. Declaration of Conformity EC........................................................................................................................20

2
1. Introduction
This manual is for the following models of SINGLE LAMP AL SERIES:
UV 405C AL2 - UV 405 AL2–412 AL2
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.

3
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 vapours 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 centres 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.

4
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.
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

5
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, scrupolously 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.
MAINTENANCE
The UV System of SINGLE LAMP series have been projected and realized by S.I.T.A. Srl 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.
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 9000 hours.
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 (9000 h 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.
N.B. for the replacement of the lamp it is not necessary to turn water off

6
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.

7
3.1. 3.1 Installation scheme recommended

8
4. UV Chamber Installation
4.1. 4.1 Assembling of the UV chamber
4.2. 4.2 Detailed drawing of the UV-C chamber
5. Models drawing
Inserire la lampada UV-C nella guaina
Collegare il quadripin elettrico
Inserire la calotta PVC copricontatti.
Avvitare il bloccaguaina in nylon
Inserire la molla di appoggio della lampada nella guaina al quarzo
Insert the quartz sleeve paying attention in centering the guide spring placed
ASSEMBLING OF THE UV-C CHAMBER
Insert the O-RING on the sleeve
on the bottom of the chamber
Unscrew the nylon sleeve bolt
Extract the PVC contact cover

9
•Screw nylon sleeve bolt
•Insert the sping
Perform hydraulic test and check there is no leaks.
Connect the lamp to quadripin socket place the earth cable in the slot along the cable gland block and
connect its terminal to the M4 bolt welded onto the manifold, insert the contact cover plug until it
stops, and then turn it to the closed position.
Finally connect the power cable to the socket.
Once connected to the power supply the UV lamp will light on.
Do the following at the first start up and on every lamp replacement:
-) Activate the lamp life count down hour meter (see display description)
-) In case of LCD PLUS system with UV sensor then operate the sensor calibration. This operation
must be done after at least 5 minutes from lamp start, with quartz sleeve clean, with sensor measuring
window clean and with steady water flow.
Inserire la lampada UV-C nella guaina
Collegare il quadripin elettrico
Inserire la calotta PVC copricontatti.
Avvitare il bloccaguaina in nylon
Inserire la molla di appoggio della lampada nella guaina al quarzo
Inserire la lampada UV-C nella guaina
Collegare il quadripin elettrico
Inserire la calotta PVC copricontatti.
Avvitare il bloccaguaina in nylon
Inserire la molla di appoggio della lampada nella guaina al quarzo

10
4.2.UV chamber drawing
028104 028105
028102 028103
CODE/CODICE
QUARTZ SLEEVE/ QUARZO
DESCRIPTION / DESCRIZIONE UV LAMP/ LAMPADA UV
RIF.
A
B
028060D 028036 028088 028061 028034D
2755 2755/YZ
028034/K
SLEEVE BOLT/ BLOCCAGUAINA
CONTACT COVER KIT
E + G + 1 m LAMP CABLE BALLAST (NO PLUG)
SPRING/ MOLLA
CONTACT COVER/ COPRICONTATTO
G
FOUR-PIN HOLDER / QUADRIPIN
O-RING 23x4/ O-RING 23x4
C D F E
BALLAST (SCHUKO - U.K.)
H H L
028060D 028036 028061 028088
028034/K
2753
028034D
2753/YZ
3
IN
2
D
OUT
1
C
BA
SPINA U. K. (SU RICHIESTA) SPINA SCHUKO (STANDARD) SENZA SPINA (SU RICHIESTA)
026427/B
CLIP/ CLIPM 026427/B
M
M
E
F
G
L
H
N
V141
O-RING/ O-RINGN V141
028102C 028103C
028060D 028036 028061 028088
028034/K 2753
028034D
2753/YZ 026427/B
V141
UV 412 AL
CODE/CODICE
UV 405 AL
CODE/CODICE
UV 405C AL
2 2 2

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5. Models drawing

12

13
6. Electrical scheme

14
7. Display Information (Troubleshooting)
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 days:
Press (◄┘) for less than 1 sec to show the lamp working days:
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)
365
AL1
AL1
000
012
365
365
01.0
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

15
N.B. 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. 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
Alarm + Buzzer
Remaining working days of the
lamp. 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.
N.B. if within 5 sec it is not
"confirmed", the days-meter
comes back to the current
counting value
Reamining lifespan of the lamp
(restarted)
365
113
AL2
AL2
113
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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8. Technical data sheet
8.1. 8.1 UV 405 AL2
GENERAL INFORMATION
Max flow rate
19 l/m
UVC transmittance
99%- 1 cm
UVC dose
300 J/m2
Water Temperature range
5-50° C
Total consumption
33 W
Mounting
Vertical or horizontal
UV REACTOR
Material
Stainless Steel 304 (optional 316L)
Connections
Thread ¾” M
Total Volume
1 l
Total weight
1.5 kg
Max working pressure
10 bars g
Protection class
IP 54
Shape
U
Flow direction
From bottom to top
UV LAMP
Number
1
Lifespan
9000 hr
Lamp power
30 W
Type
Low pressure type 028102
CONTROL PANEL
AL2
Material
Thermoplastic
Dimensions
118 x 60 x 64 mm
Protection class
IP 54
Ambient temperature range
5 –45 °C
Power supply
230 V - 50/60 Hz
Lamp cable length
1 m
Power supply cable
1 m
Feed plug
SCHUKO, UK or passing wires
Monitor display
Digital SITA
Days meter
Yes for total system life
Resettable days meter
Yes for lamp life control
Audio alarm
With silence options
Rev. 01-2015

17
8.2. UV 405C AL2
GENERAL INFORMATION
Max flow rate
30 l/m
UVC transmittance
99%- 1 cm
UVC dose
300 J/m2
Water Temperature range
5-50° C
Total consumption
33 W
Mounting
Vertical or horizontal
UV REACTOR
Material
Stainless Steel 304 (optional 316L)
Connections
Thread ¾” M
Total Volume
1.6 l
Total weight
1.8 kg
Max working pressure
10 bars g
Protection class
IP 54
Shape
U
Flow direction
From bottom to top
UV LAMP
Number
1
Lifespan
9000 hr
Lamp power
30 W
Type
Low pressure type 028102C
CONTROL PANEL
AL2
Material
Thermoplastic
Dimensions
118 x 60 x 64 mm
Protection class
IP 54
Ambient temperature range
5 –45 °C
Power supply
230 V - 50/60 Hz
Lamp cable length
1 m
Power supply cable
1 m
Feed plug
SCHUKO, UK or passing wires
Monitor display
Digital SITA
Days meter
Yes for total system life
Resettable days meter
Yes for lamp life control
Audio alarm
With silence options
Rev. 08-2019

18
8.3. UV 412 AL2
GENERAL INFORMATION
Max flow rate
45 l/m
UVC transmittance
99%- 1 cm
UVC dose
300 J/m2
Water Temperature range
5-50° C
Total consumption
44 W
Mounting
Vertical or horizontal
UV REACTOR
Material
Stainless Steel 304 (optional 316L)
Connections
Thread 1” M
Total Volume
1,8 l
Total weight
2.5 kg
Max working pressure
10 bars g
Protection class
IP 55
Shape
U
Flow direction
From bottom to top
UV LAMP
Number
1
Lifespan
9000 hr
Lamp power
40 W
Type
Low pressure type 028104
CONTROL PANEL
AL2
Material
Thermoplastic
Dimensions
118 x 60 x 64 mm
Protection class
IP 54
Ambient temperature range
5 –45 °C
Power supply
230 V - 50/60 Hz
Lamp cable length
1 m
Power supply cable
1 m
Feed plug
SCHUKO, UK or passing wires
Monitor display
Digital SITA
Days meter
Yes for total system life
Resettable days meter
Yes for lamp life control
Audio alarm
With silence options
Rev. 01-2015

19
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.