Spirax Sarco Colima Visco User manual

EXPER
TISE SOLUTIONS SUST
AINABILITY
© Copyright 2013
3.796.5275.200 IM-P329-02
CH Issue 8
Colima
Visco
1. Safety information
2. General product
information
3. Installation and
Maintenance
4. Accessories
5. Grounding
6. Spare parts
Colima Visco and Colima Viscorol
Magnetic Level Indicators
Installation and Maintenance Instructions
Colima
Viscorol

23.796.5275.200
1. Safety information
1.1 Type of application
The suitability of the Colima Visco and Colima Viscorol has to be verified for the specific usage
and application according to the product name-plate, technical specifications and to these
Installation and Maintenance Iinstructions.
The Colima Visco and Colima Viscorol comply with the requirements of the following European
Directives: 2014/68/EU (PED) and 2014/34/EU (ATEX) (for the electric equipment only).
1.2 Accessibility
Ensure safe access and, where necessary, a safe and correctly protected platform before working
on the product. Use suitable lifting mechanisms where required.
1.3 Lighting
Ensure adequate lighting, particularly where detailed or intricate work is required.
1.4 Hazardous gases or liquids in the pipeline
Consider the present or previous content of the pipeline paying attention to inflammable
materials, substances dangerous to health and to extremes of temperature.
1.5 Dangerous environment
Take account of areas at risk of explosion, lack of oxygen (e.g. tanks or pits), dangerous gases,
temperature extremes, hot surfaces, re hazard (e.g. during welding), excessive noise, moving
machinery.
1.6 The system
Consider the effect on the complete system of the work proposed. Will any proposed action (e.g.
closing isolation valves, electrical isolation) put any other part of the system or any personnel at
risk? Dangers might include isolation of vents or protective devices or the rendering ineffective
of controls or alarms. Ensure isolation valves are turned on and off in a gradual way to avoid
system shocks.
1.7 Pressure
Ensure that all parts exposed to pressure are isolated or adequately vented to atmospheric
pressure. Do not assume a system is de-pressurized even when the pressure gauge reads zero.
1.8 Temperature
To avoid the risk of burns, wait until the unit has reached ambient temperature before
handling after isolation.
1.9 Tools and consumables
Before starting a work, ensure the availability of appropriate tools and / or consumables. Only use
the spare parts listed in Section 5.
1.10 Protective clothing
Consider whether you and/or other personnel need protective clothing, against for example chemical
products, high or low temperatures, noise, falling objects and hazards to eyes and face.
1.11 Other risks
During normal operation the product surface could be very hot. The surface temperature of some
products operating at the maximum allowable temperature may reach 350°C.
Please take this information into account before disassembly or removal from the plant!

3
3.796.5275.200
1.12 Freezing
The Colima Visco and Colima Viscorol are non auto-drainage products. Where they are exposed to
temperatures below zero they must be protected from the damage caused by freezing conditions.
1.13 Disposal
Unless otherwise stated within these Installation and Maintenance Instructions, these products
are recyclable. Therefore, provided appropriate precaution is taken, there is no potential
ecological risk after their disposal.
1.14 Returning products
According to European Community laws on Health, Safety and Environmental Protection, upon
returning products for their testing and/or repairs to Spirax Sarco, customers and distributors are
reminded that they must supply the necessary information on hazards and precautions to be taken with
regard to the presence of contaminated product residues or instrument damage which may present a
health and/or environmental safety hazard.

43.796.5275.200
2. General product information
2.1 Description
Colima Visco and Colima Viscorol magnetic level indicators have been designed for optical viewing of
liquid levels in most industrial applications. They are suitable for high pressure and high temperature
applications and the range is complemented by having a pharmaceutical grade option available
when requested.
The indicators can be equipped with electrical contacts or with a potentiometer transmitter for full
automation of process management, including pressurised tanks, vats, boilers, for the control of
pumps, valves and alarm systems.
Mounting - The Colima Visco and Colima Viscorol magnetic level indicators are installed on the
side of the tank (bypass system) or vertically on the top of the tank.
Optional extras - Electrical bistable reed switch contacts, placed at the required levels; thus allowing
control of several operating points with a single instrument.
When equipped with a potentiometer transmitter, they allow continuous reading of liquid level.
Standards and certication - Colima Visco and Colima Viscorol magnetic level indicators comply
with the following European Directives:
- 2014/68/EU (PED) - Class IV (plastic materials excluded).
- 2014/34/EU (ATEX) and 2014/35/EU (LVD) (for electrical equipment only).
- Products intended for use in the Naval and Marine sectors are RINA, Bureau Veritas and M.M.I
(Italian navy) approved.
2.1.1 Operation
The indicator’s body houses a oat which rises or falls following the level of the liquid in a vessel.
The oat is provided with a magnetic system that attracts the two-colour rollers
(Colima Viscorol) or a two-colour indicator (Colima Visco) vertically aligned in a transparent tube
sealed at both ends. The tube stands vertically outside the indicator’s body and is
retained by a scale.
Colima Visco - The line between red and white marks the level of liquid in the tank.
Colima Viscorol - When the tank is empty all the rollers have the white side facing the observer.
As the level of the oat rises the rollers are actuated magnetically, they rotate through 180° to show
their red side. The line between red and white marks the level of liquid in a vessel.
Colima ViscorolColima Visco
Fluid level Fluid level
Warning
The correct selection of the diameter of the indicator body and the connection rating must always
relate to the specic installation and application conditions.

5
3.796.5275.200
2.2 Materials
No. Part Material
1Indicator body 304 / 316L / 316Ti / PVC / PP / PVDF
316 Ti no R25 and Viscorol 40
2Scale Neutral or graduated with the exception of R25 and 40
3Glass tube Polycarbonate or Pyrex
4Two colour indicator Plastic or alnico
5Two colour rollers Plastic or Aluminium
6Float (not shown) 316L / 316Ti / Titanio / Hastelloy PVC / PP / PVDF
Colima ViscorolColima Visco
1
2
3
4
5
1
2
3
2.3 Design limits - Colima Visco and Colima Viscorol
TMA - Maximum allowable temperature
Steel Ø 40 -25 to +180°C
Ø 50-60-70 -25 to +350°C
Plastic
PVC -20 to +70°C
PP -20 to +105°C
PVDF -20 to +130°C
PMA - Maximum allowable pressure Steel 120 bar g 350°C 140 bar g 150°C
Plastic < 6 bar g
Specic gravity of uid Steel and plastic > 0.8 kg/l
Titanium > 0.5 kg/l
Two-colour line marker material and rollers Polycarbonate T < 230°C
Aluminium T < 350°C
Protecion degree graduated scale Viscorol IP67
Visco IP40

63.796.5275.200
3. Installation and Maintenance
Note: Before actioning any installation or maintenance work
observe the 'Safety information' in Section 1.
Refering to the Installation and Maintenance Instructions, name-plate and Technical
Information Sheet, check that the product is suitable for the intended installation.
-Check materials, pressure and temperature to ensure compatibility of the product with the
required application.
- Remove protective covers from all connections and the protective lm from the name-plate.
3.1 Assembly
The Colima Visco and Colima Viscorol magnetic level indicators a r e d e l i ver e d w i t h t h e  o a t p a c ked
and locked at its lower ange.
Caution before installation disassemble the lower ange and remove the oat from its package.
Conrm the presence of supplied gaskets.
3.1.1
Insert the oat inside the indicator body following the direction arrow: ' ' and 'TOP'.
3.1.2
Reassemble the lower ange, and tighten the bolts.
3.1.3
Mount the level indicator onto the tank; ensuring that all connections are aligned and tighten.
Note: we recommend that isolation valves are installed between the tank and the
indicator connections to facilitate quicker and safer product removal.
3.1.4
lowly ll the tank allowing the oat to become buoyant.
3.1.5
Ensure that there is no particulate matter suspended in the uid that may affect the oat's
movement.
3.1.6
In order to improve its visibility, it is also possible to rotate the visual scale around the axis of the
indicator.
Executing this action (by acting on the metallic xing clamps), be careful not to move longitudinally
the graduated scale, as this may result in incorrect level readings.
Caution: in presence of electrical contacts mounted on an adjustment rod, these electrical contacts
should also be rotated respecting the same angle and rotation direction provided by the visual scale.

7
3.796.5275.200
3.2 Disassembly
Before disassembly of the level indicator disconnect or isolate any electricity supply or circuit
and depressurize the tank. Warning: do not disassemble the level switch before the isolation
valves have been closed or tank emptied.
3.2.1
Close isolation valves or empty the tank. Ensure that isolation valves cannot be opened when
the level indicator has been removed.
3.2.2
Unscrew thread or connection bolts.
3.2.3
Disassemble the level indicator from the tank connections.
Caution: suppor t the oat during the disassembly ensur ing that it does not drop and hit the base
of the body. Avoid any accidental damage to the body, scale or oat.
Periodical inspections are necessary to guarantee complete efciency of the instrument.
A regular maintenance programme starting from its initial installation is recommended.
The suggested precautions are important to obtain the best operating conditions of the level
control.
The instrument does not require preventitive maintenance, however it is recommended
that from time-to-time a check of the liquid uidity is actioned to avoid any suspensions or
deposits that can inuence wetted parts. Some versions are provided with a drain hole. Also
check that the oat moves freely and check the serviceability of the rollers / indicator.
Models:
Colima Visco and Colima Viscorol LL
Side / side connections.
All wetted parts are made of stainless steel or plastic.
Colima Visco and Colima Viscorol LF
Side / bottom connections.
All wetted parts are made of stainless steel or plastic.

83.796.5275.200
Colima Visco and Colima Viscorol LT
Side / top connections.
All wetted parts are made of stainless steel or plastic.
Colima Visco and Colima Viscorol TF
Top / bottom connections.
All wetted parts are made of stainless steel or plastic.
Colima Visco and Colima Viscorol R
Top connection.
Indicator for tanks or vats that are difcult to access, and in the
event of especially viscous uids, covering liquids, sludge.
All wetted parts are made of stainless steel or plastics.
Colima Visco GV and GDV
Side / side connections.
All wetted parts are made of stainless steel.
Specically designed to control methane-gas odorant.

9
3.796.5275.200
For a complete automated management of barrels (even under pressure), tanks, boilers, and for
the control of pumps, valves and alarm systems, Visco and Viscorol Magnetic Level Indicators may
be equipped with electrical contacts and with potentiometric transmitter.
4.1 Electric contacts
Limit switches are tted onto the of the indicator tube, and positioned behind the visual scale. They
must be installed at the intervention point required for the automated level control.
As the level of liquid reaches the expected level, the magnetic system tted inside the oat activates
the contacts. When the liquid level returns to the required band the contact switches, maintaining
the state even beyond the threshold itself. The contact will be restored only when the oat passes
in the opposite direction.
The status switch for each contact always takes place quickly and safely. Parameter settings are
factory-dened at the required set- points, however they are adjustable as needed. With a single
device it is possible to control multiple levels.
4.1.1 Contact features
Contacts can be SPDT and DPDT (two SPDT contacts with simultaneous action) running bistable.
Type
Reed switch contact.
Hermetically sealed in inert gas.
Tungsten coated Rhodio.
60 W/VA 1A 250 V @
Shock and vibration resistance 30g 11ms
Maximum allowable temperature -20°C +200°C
4.1.2 Electrical connection of the contacts
Note: always perform the ground connection.
4. Accessories
Colima Visco
To connect the electrical contacts of the uphill liquid control, follow
the following diagram:
To connect the electrical contacts controlling the falling liquid,
follow the following diagram:
Contact position: 90° with respect to the visual scale.

10 3.796.5275.200
Colima Viscorol
Warning
Electric contacts can be damaged by the following:
-Installation accidental damage.
-Over supply of voltage.
-Electromagnetic interference.
Before installing the contacts, verify their integrity by performing a blank check using a multimeter.
Handle with care.
Damaged contacts due to any of the above will invalidate the warranty.
SPDT bistable
reed switch
contact.
The position
of the contact
is always eld
adjustable
DPDT bistable
reed switch
contact
(two SPDT
contacts
alongside
each other).
The position
of the contacts
is always eld
adjustable
To connect the electrical contacts of the uphill liquid
control, follow the following diagram:
To connect the electrical contacts controlling the falling
liquid, follow the following diagram:
Contact position: 180° with respect to the visual scale.

11
3.796.5275.200
4.2 Potentiometer transmitter
The potentiometer transmitter allows continuous remote reading of the liquid level. A potentiometer
is a device comprising a printed circuit board on which a reed / resistance chain is welded and is
placed inside the oat’s vertical weather-proof tube (outside the level indicator). The total resistance
of a known value is measured at the ends of this potentiometer.
The oat, following the liquid level trend, activates the potentiometer’s reed contact chain through
its own magnetic eld, locally closing the signal. The total resistance value is measured between 0
and 100% of the maximum or total travel. The end poles of the potentiometer are connected to a
converter that transforms the input value into Ohm and the output into mA.
4.2.1 Transmitter characteristics
Reading resolution available
5 mm
10 mm
20 mm
Resistance input 1 k ÷ 100 k Ohm
Maximum allowable temperature -20°C to +100°C

12 3.796.5275.200
Housing for safe area
Weather-proof IP65, plastic.
Housing for safe area, low / high temperature
Special design suitable for low temperatures or installation in high
concentration saline environments and for use in the food industry.
Entirely in stainless steel.
Protection degree IP67.
On request IP68.
Up to two cable entrances.
Housing for hazardous area, ATEX certied
ATEX certied II 1/2 G Ex d IIC T6 for use in hazardous areas.
In pressure die-cast aluminium with a polyamide paint.
Protection degree IP67.
Up to a maximum of two cable entries.
Explosion-proof housing operating limits
Technical data Class I: simple protective-earth connection requirements
Employment data for potentially explosive atmospheres
Ambient temperature limits -20 ÷ 40°C
Marking II 1/2 G Ex d IIC T6
Temperature class T6
Permitted temperature variation range -20 ÷ 40°C
Suitability for area of: 0, 1, 2, GAS Group II (European Directive ATEX 1999/92/EC)
Warning:
1. Do not make any modication to the housing. Any alterations or modications to the product will
invalidate any warranties, explosion proof characteristics and any marking.
2. Install at the inlet of the housing a suitable xing or locking device with lling material.
The absence of these components will result in the loss of responsibility of the manufacturer.
3. These products should only be used for what they are designed for. Anything outside of the
stipulated application range may be subject to unforeseen and dangerous circumstances and
full responsibility will be with the installer.
4.2.2 Converter's housings
Three types of housings are available, depending on the design conditions:
80 mm
62 mm
135 mm
Ø 110 mm
Ø110 mm
70 mm

13
3.796.5275.200
4. All accessories intended for the entrance of the cables and for the closure of the holes not used,
must be certied according to the standards EN 60079-0, EN 60079-1, EN 61241-0, EN 61241-1
and must be at least IP66/IP67.
5. The temperature inside the housing can be >70°C at the cable entry point. Consequently, the
cables must be dimensioned appropriately.
6. Attenzione: always verify the correct performance of the grounding devices. Specic connecting
points are provided on board the instrument (see next section).

14 3.796.5275.200
4.2.3 Converter features
Ohm-mA signal converters are tted inside the housing. Three types of converter are available:
Converter for safe area
Field set using two trimmers 10 laps:
- For the Z (zero) gauging and
- For the G (gain) gauging
without resorting to interconnecting systems.
Converter for in-built safe area
Field set using two trimmers 10 laps:
- For the Z (zero) gauging and
- For the G (gain) gauging
without resorting to interconnecting systems.
Converter Hart®protocol version 5.3
Converter regulated with an interconnection cable.
Resistance input 1 k ÷ 100 k Ohm
Current output 4÷20 mA
4.3 Valves
The level indicators are supplied as standard, with a drainage hole and a SS plug.
(A vent hole can also be supplied on request). Upon request drain and vent valves can be supplied.
Note: Isolation valves between the indicator attachments and the tank should be installed to aid
maintenance work.

15
3.796.5275.200
5. Grounding
The requirement for compliance with the 2014/34/UE (ATEX) Directive, even on the instrument
devoid of electrical equipment, Involves the use of the grounding in the methods described below.
M4x8 Screw
A2 UNI5931
Cable joint 4 ÷ 6 mm2
for M4 screw
M4 A2 DIN6798
toothed washer
M4 A2 UNI6592
at washer
M4 A2 UNI5588
nut
Grounding
View from A
1
2
2
3
Do not remove or tamper with the connection between the instrument scale (1) and the nameplate
bracket (2).
Connect the earthing screw (3) to the ground as shown in the picture of the instrument on pag. 16
(minimum cross-section cable grounding = 4 mm2).

16 3.796.5275.200
Caution: after every disassembly and reassembly of the closure ange, always make sure of the
presence of locking washers (see below).
1
2
1
2
3
Closure ange
M4 A2 DIN6798
toothed washer
A2 UNI6592
at washer

17
3.796.5275.200
The available spare parts are detailed below. No other parts are supplied as spares.
Available spares
Float 5
Tube with rollers / indicator 2, 3 and 4
Scale 1
Electric components 6 and 7
How to order spares
Always order spares by using the description given in the column headed 'Available spares' and
state the size and serial number of the unit which is indicated on the name-plate.
Example: 1 Float for a Spirax Sarco Colima Visco having the following serial number: 000000.
6. Spare parts
6
5
1
3
4
2
7

18 3.796.5275.200

19
3.796.5275.200

3.796.5275.200 CH Issue 8 - 2017.11
SERVICE
For technical support, please contact our local Sales Engineer or our Head Ofce directly:
Spirax Sarco S.r.l. - Technical Assistance
Via per Cinisello, 18 - 20834 Nova Milanese (MB) - Italy
Tel.: [phone] - Fax: [phone]
E-mail: [email protected]
LOSS OF GUARANTEE
Total or partial disregard of above instructions involves loss of any rights to guarantee.
Spirax-Sarco S.r.l. - Via per Cinisello, 18 - 20834 Nova Milanese (MB) - Tel.: [phone] - Fax: [phone]