Sita IT Series Reference manual

ULTRAVIOLET DISINFECTION
IT SERIES
UV 80 IT
MANUAL OF INSTALLATION, USE AND SERVICING
English 01-2015 Rev. 06-2019 Rev.C

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INDEX
1. Introduction.........................................................................................................................................................2
2. General Principles ...............................................................................................................................................3
3. Permissible operating range (data) according to ÖNORM M5873-1:2001.........................................................6
4. Instruction for installation and servicing............................................................................................................8
4.1. Installation scheme recommended...............................................................................................................................9
5. The UV Chamber Installation ...........................................................................................................................12
5.1. Assembling of the UV chamber.................................................................................................................................12
6. Safety measures and regulations .......................................................................................................................16
6.1. Elettricity...................................................................................................................................................................17
6.2. Mechanical dangers...................................................................................................................................................17
6.3. Esposure to high intensity UV light...........................................................................................................................17
7. Run the System.................................................................................................................................................17
8. Touch Screen Panel...........................................................................................................................................18
8.1. Main Screen...............................................................................................................................................................18
8.2. Setting menu..............................................................................................................................................................19
8.3. Lamps menu ..............................................................................................................................................................20
8.4. Panel menu ................................................................................................................................................................23
8.5. Sensor menu ..............................................................................................................................................................27
8.6. Automatic cleaning system........................................................................................................................................30
8.7. Parameters .................................................................................................................................................................31
8.8. Datalog - Events ........................................................................................................................................................33
8.9. List of alarms and troubleshooting ............................................................................................................................35
9. Spare parts.........................................................................................................................................................39
10.Warranty Condition...........................................................................................................................................40
11.Declaration Of Conformity ...............................................................................................................................41

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1.Introduction
This manual is for the following models of UV IT Series.
UV 80 IT
This Pressure UV Systems is manufactured by S.I.T.A. s.r.l.
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.

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2.General Principles
The UV 80 IT SERIES sterilizers 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 warrant 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).
The sterilization equipment is constituted by different electronical and electromechanical components
assembled in such a way to realize effectively the sterilization process, giving a bacteriologically pure
water.
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 2014/35/CE) must be connected to a current-tap
provided with grounding.
SAFETY DIRECTIONS
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. 4 May 2014, N°27 "Accomplishment of directive
2011/65/CE, concerning the reduction of dangerous subrtances in electric and electronic equipments"
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.
ELECTRICITY
The lightning flash and arrowhead symbol is to alert the user to the presence of un-
insulated "DANGEROUS VOLTAGE” within the enclosure.
The equipment may only be opened if the mains supply is isolated. The mains supply must not be
restored as long as the equipment is open. This applies to both the electrical control panel and the
reactor vessel.

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Attention:
Working on live equipment is forbidden.
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.
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

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INSTALLATION GUIDANCE
The reactor control panel utilises air cooling. The following guidelines must be adhered to when
locating the unit.
The reactor and control panel must not be located in a position where the ambient air temperature
exceeds 40ºC.
The reactor and control panel must not be located adjacent to other equipment that directly emit heat
The reactor and control panel must not be located adjacent any chemical equipment that is likely to
emit fumes.
The reactor should be located within the piping system in such a manner as to ensure that sufficient
clearance is available in a horizontal direction to allow for lamp replacement and wiper maintenance.
See the relevant data information included in this manual.
The reactor must be positioned with the side flanged pipe connections pointing in an upwards direction.
Never install the reactor in a position directly adjacent to chemical dosing points.

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3.Permissible operating range (data) according to ÖNORM M5873-1:2001
Permissible range of operation is the result of typetest according to ÖNORM M5873-1:2001.
For each UV-transmittance (%) is reported the minimum reference irradiance (W/m2) and the
maximum flow (m3/h) considering that the minimum Reduction Equivalent Fluence demanded is 400
J/m2.
UV 80 IT
UV-trasmittance
%T100 (100mm)
UV-trasmittance
%T10 (10mm)
Minimum reference
irradiance Emin
Maximum flow
Qmax
%
%
W/m2
m3/h
< 9
< 78,6
not permitted
0,00
9
78,6
97,14
14,59
10
79,4
100,48
15,90
11
80,2
103,54
17,14
12
80,9
106,36
18,32
13
81,5
108,98
19,45
14
82,2
111,44
20,53
15
82,7
113,76
21,57
16
83,3
115,95
22,57
17
83,8
118,04
23,55
18
84,2
120,03
24,50
19
84,7
121,95
25,43
20
85,1
123,80
26,35
21
85,6
125,60
27,24
22
85,9
127,34
28,13
23
86,3
129,04
29,00
24
86,7
130,70
29,87
25
87,1
132,33
30,73
26
87,4
133,93
31,59
27
87,7
135,51
32,45
28
88,0
137,07
33,31
29
88,4
138,62
34,16
30
88,7
140,15
35,02
31
88,9
141,67
35,89
32
89,2
143,18
36,75
33
89,5
144,68
37,63
34
89,8
146,18
38,51
35
90,0
147,68
39,39
36
90,3
149,17
40,29
37
90,5
150,67
41,19
38
90,8
152,16
42,10
39
91,0
153,65
43,03
40
91,2
155,15
43,96
41
91,5
156,64
44,90
42
91,7
158,14
45,86
43
91,9
159,65
46,82
44
92,1
161,16
47,80
45
92,3
162,67
48,79
46
92,5
164,18
49,79

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47
92,7
165,70
50,80
48
92,9
167,22
51,83
49
93,1
168,75
52,86
50
93,3
170,28
53,91
51
93,5
171,81
54,98
52
93,7
173,35
56,05
53
93,8
174,89
57,14
54
94,0
176,43
58,23
55
94,2
177,98
59,34
56
94,4
179,53
60,47
57
94,5
181,08
61,60
58
94,7
182,63
62,74
59
94,9
184,19
63,90
60
95,0
185,74
65,06
61
95,2
187,30
66,24
62
95,3
188,85
67,42
63
95,5
190,40
68,61
64
95,6
191,95
69,82
65
95,8
193,50
71,03
66
95,9
195,05
72,24
67
96,1
196,59
72,24
68
96,2
198,13
72,24
69
96,4
199,67
72,24
70
96,5
201,19
72,24
71
96,6
202,72
72,24
72
96,8
204,23
72,24
73
96,9
205,74
72,24
74
97,0
207,24
72,24
75
97,2
208,73
72,24
76
97,3
210,21
72,24
77
97,4
211,68
72,24
78
97,5
213,13
72,24
79
97,7
214,58
72,24
80
97,8
216,01
72,24
81
97,9
217,43
72,24
82
98,0
218,83
72,24
83
98,2
220,22
72,24
84
98,3
221,59
72,24
85
98,4
222,94
72,24
86
98,5
224,27
72,24
Table max flow at each UVT obtained with interpolation of the test points results
In the table is shown the maximum flow rate that the UV system can treat at each transmittance of the
water.
eg. at water UVT(10) = 91% the UV system can treat max 43.03 m3/h . and the minimum irradiance
is 153.65 W/m2.
NOTE: In this condition the alarm threshold level of the UV system MUST be set at 153.65 W/m2.
Once that the end user knows approximately the UVT% of the water then he can check the min
Irradiance in W/m2that the system can show to give at least 400 J/m2.

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An UV irradiance higher than the threshold level means that the dose is higher than 400 J/m2and this
guarantee a good disinfection. If it’s lower than the user must clean the quartz sleeves, clean the sensor
measuring window or check the UVT% of the water. The irradiance threshold level can be set in the
electrical panel.
4.Instruction for installation and servicing
General premise
The installation of the UV 80 IT SERIES sterilizer units must be carried out by specialized staff,
scrupolously following the instructions given hereby. 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 UV 80 IT SERIES 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 UV 80 IT 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 14000 hours
UV lamp o-ring change - once per year
UV lamp thimble clean - frequency depends on the quality of the water
Control Panel filter mat - clean or change at same time as UV lamp change.
In addition the wiper drive mechanism should be inspected on a yearly basis.

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4.1. Installation scheme recommended

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5.The UV Chamber Installation
5.1. Assembling of the UV chamber
● Unscrew the s/s sleeve bolts (A) from both sides by using the key supplied.
● Insert the quartz sleeves (B) by using the special bar supplied and the o-rings 38x4 (C) on both sides
of the quartz sleeves.

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● Screw again the s/s sleeve bolts on both sides of the UV chamber, and carry out the hydraulic test,
verifying that the o-rings are watertight and that no water leaks outside the sleeve bolts or inside the
quartz sleeves.
● On the openable side of the UV chamber, insert the UV-C lamps (D) into the quartz sleeve
previously mounted.

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● Each lamps has 2 wires connected from the top to the bottom .Lamps must be inserted into the
chamber with these wires in the opposite side to the sensor.
To do this the two pins (signed with the red circle in the photo below) must be in the opposite side to
the sensor.
● Connect to the UV-C lamps the 4-pins connectors (E) mounted as on the figure together with the Ø 1
¼” ring nuts (F), the PG9 nipples (G), and the 4-pins holders in black polyethylene (H) with the
pertinent o-rings 2112 type.

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● Screw the Ø 1 ¼” ring nuts (F) on the s/s sleeve bolts.
● Mount the o-ring (I) (4112 type) on the measuring window (L) and screw this one on the Ø 1” bush
welded in the middle part of the UV chamber.

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Insert the sensor (M) inside the measuring window and screw the ring nuts.
Finally, connect the pertinent electrical cable.
6.Safety measures and regulations

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The equipment must be installed, put into operation and maintained by trained specialists. The owner
and/or user must ensure that the operating personnel have been suitable instructed.
The equipment has been subjected to a hazard analysis, corresponding precautionary measures
regarding the safety of persons and domestic animals have been made. Nevertheless, it is still possible
that danger could arise as a result of incorrect use, bad maintenance, material changes, etc. These
dangers are associated with:
✓Electricity
✓Mechanical dangers
✓Exposure to high intensity UV light
6.1. Elettricity
The lightning flash and arrowhead symbol is to alert the user to the presence of un-insulated
"DANGEROUS VOLTAGE” within the enclosure.
The equipment may only be opened if the mains supply is isolated. The mains supply must not be
restored as long as the equipment is open.
ATTENTION:
Working on live equipment is forbidden.
6.2. Mechanical dangers
The equipment contains glass which must be handled with care.
Broken lamps emits dangerous mercury vapours.
6.3. Esposure to high intensity UV light
The reactor contains UV emitting lamps and if exposed while energised can cause serious eye and skin
damage. Ensure that the mains supply is isolated before opening any of the covers of the reactor.
7.Run the System
The commissioning personnel authorised by the owner and/or user, must read and understand the
operating instructions.

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The commissioning personnel must be familiar with the safety measures and regulations applicable to
the country/area in which the system is installed.
Turn On/Off the system
The preconditions for starting are:
✓Water is flowing through the vessel.
✓The electrical panel is feeded
✓The lamps have been turn off for 10 minutes
If all these conditions are respected turn on the general switch.
To shut OFF the system turn off the general switch. To shut OFF the lamps but still give power to the
el panel push the OK button for more than 3 sec.
8.Touch Screen Panel
8.1. Main Screen

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Main screen of the system.
It displays the parameters of flow rate, transmittance, temperature, irradiation, lamps hour meter and
quartz cleaning system (if available). It also displays the lamps power. In case of alarm flashing
"ALARM button” is displayed.
Buttons
ON/OFF
-) Turn on and off the UV lamps.
SETTING MENU
-) It allows to access the settings menu. The user can set all the parameters
useful measures and operation of the system, operate the UV system and
read all the parameters that the system records or stores (see “Main menu”).
Manual Start/Stop cleaning system
-) If the system is equipped with a cleaning system, it allows to start and stop
the cleaning system (when automatic cleaning system is activated the button
is disabled).
Alarms button
-) Visible in case of alarm. Touch to access to the alarm and lamps status
visualization (see "Alarm screen").
8.2. Setting menu
In this menu the user can set, read and manage all the necessary parameters for the measures and the
operation of the system.
Trasmittance
Flow rate
Power lamp
Residual lamps life
Cleaning system
with end switch
animation
Alarms
Temperature
UV irradiance
Date and clock
Unit Shape
Lamps menu