Lauda LOOP 100 User manual

LOOP
L 100, L 250
Operation manual
Thermo-electric circulation thermostat
V3REV13Read this manual prior to performing any task!

Translation of the original operation manual
Manufacturer
LAUDA DR. R. WOBSER GMBH & CO. KG
97922 Lauda-Königshofen
Germany
Tel.: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: https://www.lauda.de
Laudaplatz 1
Q4WA-E_13-001, 3, en_US 3/18/2022©LAUDA 2021
2 / 41 LOOP V3
replaces issue V3R11/12, V2R6, V2R5, V2R3, V1R24, V1R22, V1R20

Table of contents
1 Safety...................................................................................................................................................................................... 5
1.1 Safety information......................................................................................................................................................... 5
1.2 Intended use................................................................................................................................................................... 5
1.3 Foreseeable misuse....................................................................................................................................................... 5
1.4 EMC requirements....................................................................................................................................................... 6
1.5 Prohibition of modifications to the device................................................................................................................. 6
1.6 Materials......................................................................................................................................................................... 6
1.7 Heat transfer liquid........................................................................................................................................................ 7
1.8 Application area............................................................................................................................................................. 7
1.9 Personnel qualification.................................................................................................................................................. 7
1.10 Structure of warnings.................................................................................................................................................... 7
2 Unpacking.............................................................................................................................................................................. 9
3 Setup and operating buttons.............................................................................................................................................. 10
3.1 Setup of the device..................................................................................................................................................... 10
3.2 Mains switch................................................................................................................................................................. 13
3.3 Operating buttons....................................................................................................................................................... 14
3.4 Overtemperature cutout and overtemperature...................................................................................................... 14
3.5 RS 232 interface.......................................................................................................................................................... 14
4 Commissioning..................................................................................................................................................................... 15
4.1 Set up and connect the hoses.................................................................................................................................... 15
4.2 LAUDA heat transfer liquid........................................................................................................................................ 16
4.3 Filling with heat transfer liquid and draining.............................................................................................................. 17
4.4 Establishing a mains connection................................................................................................................................ 19
5 Operation............................................................................................................................................................................ 20
5.1 General safety instructions ....................................................................................................................................... 20
5.2 LOOP menu structure................................................................................................................................................ 21
5.3 Set the set temperature Tset....................................................................................................................................... 22
5.4 Lock and release operating buttons.......................................................................................................................... 22
5.5 Set temperature limit values Til and Tih.................................................................................................................... 22
5.6 Edit basic settings........................................................................................................................................................ 23
5.7 Change the calibration of the temperature probe.................................................................................................. 23
5.8 Restore factory setting............................................................................................................................................... 25
5.9 Viewing the device status........................................................................................................................................... 25
5.10 Control......................................................................................................................................................................... 26
5.10.1 Control basics........................................................................................................................................... 26
5.10.2 Overview of control parameters............................................................................................................ 28
5.10.3 Editing control parameters..................................................................................................................... 28
V3 LOOP 3 / 41

5.11 RS 232 interface......................................................................................................................................................... 29
5.11.1 Cable and test of the RS 232 interface................................................................................................ 29
5.11.2 Protocol RS 232...................................................................................................................................... 29
5.11.3 Write commands..................................................................................................................................... 30
5.11.4 Read commands........................................................................................................................................ 31
5.11.5 Error messages.......................................................................................................................................... 31
6 Maintenance........................................................................................................................................................................ 33
6.1 General safety instructions........................................................................................................................................ 33
6.2 Maintenance intervals................................................................................................................................................ 33
6.3 Check the heat transfer liquid................................................................................................................................... 33
6.4 Cleaning the device.................................................................................................................................................... 34
7 Technical data...................................................................................................................................................................... 35
8 General................................................................................................................................................................................. 37
8.1 Copyright..................................................................................................................................................................... 37
8.2 Technical changes........................................................................................................................................................ 37
8.3 Warranty conditions.................................................................................................................................................... 37
8.4 Contact LAUDA......................................................................................................................................................... 37
8.5 Declaration of Conformity......................................................................................................................................... 37
8.6 Product Returns and Clearance Declaration.......................................................................................................... 39
9 Index.................................................................................................................................................................................... 40
4 / 41 LOOP V3

1 Safety
1.1 Safety information
The devices can only be operated as intended under the conditions
specified in this operating manual. Any other mode of operation is con-
sidered to be an unintended use and could compromise the protection
warranted by the device.
The devices are not designed for use in medical applications in accord-
ance with DIN EN 60601-1 and IEC 601-1!
This operating manual is part of the device. The information in this oper-
ating manual must therefore be kept at hand in the immediate vicinity of
the device. Be sure to carefully store this copy of the operating manual
for future reference.
If you lose the operating manual, you can download a new one from
our LAUDA homepage.
When operating the device, there is a risk of injury from high and low tem-
peratures, fire and the presence of electrical energy. These risks posed by the
device have been mitigated in the design to the extent possible in keeping
with the applicable norms. The remaining risk can be reduced using one of
the following measures:
Use suitable hoses (temperature range and pressure). If a hose breaks
hot liquids may leak out, thus endangering people and materials.
Appropriate maintenance activities must be implemented to ensure the
device remains in good working order.
Various warning symbols are located on the device. These symbols must
be observed without fail.
This operating manual contains safety information. This information
must be followed at all times.
Personnel and the protective equipment worn by personnel are also sub-
ject to specific requirements.
Refer to ÄChapter 1.10 “Structure of warnings” on page 7
for more information on the general structure of safety notices.
1.2 Intended use
This device may only be used for the temperature control and circulation of
non-flammable heat transfer liquid through a closed circuit.
The following are considered examples of unintended use:
Use in potentially explosive areas
Use for controlling the temperature of foodstus.
1.3 Foreseeable misuse
Misuse of the device must always be prevented.
As intended
Unintended
V3 LOOP 5 / 41

The following are considered cases of foreseeable misuse:
Operating the device without heat transfer liquid
Operating the device with an incorrect, flammable heat transfer liquid
Incorrect connection of hoses.
1.4 EMC requirements
Table 1: Classification in accordance with EMC requirements
Device Immunity requirements Emissions class Customer power supply
LOOP Table 2 (Industrial) in accord-
ance with EN 61326-1 Emissions Class B in accord- ance with CISPR 11
Worldwide
No limitation
"This equipment has been tested and found to comply with the limits for
Class A digital device, pursuant to Part 15 of the FCC (Federal Communica-
tion Commission) Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communica-
tions. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the
interference at his own expense."
“This Class A digital apparatus complies with Canadian ICES-003” (ICES =
Interference Causing Equipment Standards).
« Cet appareil numérique de la classe A est conforme à la norme NMB-003
du Canada ».
1.5 Prohibition of modifications to the device
Any technical modification of the device by the user is prohibited. Any
damage resulting from unauthorized modification is not covered by customer
service or the product warranty. Service work may only be performed by the
LAUDA Service department or a service partner authorized by LAUDA.
1.6 Materials
All parts that come into contact with heat transfer liquid are manufactured
from high-quality materials adapted to withstand the operating temperature.
Stainless steel, copper, silicone (hoses) and premium-quality heat-resistant
plastics are used.
Instructions for Class A digital device, USA
Instructions for Class A digital device,
Canada
6 / 41 LOOP V3

1.7 Heat transfer liquid
The device is designed exclusively for non-combustible heat transfer liq-
uids according to class I as per DIN 12876-1.
The use of heat transfer liquids poses a risk of injury from high and low
temperatures if certain upper or lower temperature thresholds are
exceeded or the external application is broken and a reaction is initiated
with the heat transfer liquid.
All possible risks in handling the heat transfer liquid are specified in the
safety data sheet for the liquid together with corresponding safety
measures. The safety datasheet must therefore be observed in order to
use the device as intended.
1.8 Application area
The device may only be used in the following areas.
Commercial sector
Use inside buildings
Height up to 2,000 m
Ambient temperature of 5 to 40 °C
Maximum relative humidity 80 % at temperatures up to 31 °C, linearly
decreasing until 50 % relative humidity at 40 °C
Fluctuations of the mains voltage up to +/-10 % of the nominal voltage
Transient electrical surge up to the values of the surge category II
Sporadic electric surges, that occur in the mains power supply
Pollution degree 2
1.9 Personnel qualification
Before operating the device, the operating personnel must read the oper-
ating manual. The operator must have understood the operating manual.
1.10 Structure of warnings
A warning of "dangerous" indicates an immediately dangerous situation.
If this warning is not observed, then death or severe, irreversible injury
could occur.
DANGER!
Type and source
Consequences of not following instructions
Measure 1
Measure...
Dangerous
V3 LOOP 7 / 41

A warning of "warning" indicates a possibly dangerous situation.
If this warning is not observed, then death or severe, irreversible injury
could occur.
WARNING!
Type and source
Consequences of not following instructions
Measure 1
Measure...
A warning of "caution" indicates a possibly dangerous situation.
If this warning is not observed, then minor, reversible injury could occur.
CAUTION!
Type and source
Consequences of not following instructions
Measure 1
Measure...
A "notice" warns that dangers to property or the environment may exist.
NOTICE!
Type and source
Consequences of not following instructions
Measure 1
Measure...
Warning
Caution
Notice
8 / 41 LOOP V3

2 Unpacking
DANGER!
Transport damage
Electric shock
Closely inspect the device for transport damage prior to
commissioning!
Never operate a device that has sustained transport
damage!
Hold on under the device to lift and carry it.
1. Unpack the device.
Keep the original packaging of your constant temperature
equipment for subsequent transportation.
2. Check the device and accessories for completeness and transport
damage immediately after delivery.
If the device or accessories are damaged contrary to expect-
ations, immediately inform the shipping company so that a
damage report can be compiled and the transport damage
inspected. Also notify LAUDA Service Temperature control
devices immediately. You will find the contact information
here ÄChapter 8.4 “Contact LAUDA” on page 37.
Table 2: Standard accessories for all devices
Device type Designation Quantity Cat. No.
All devices Operating manual 1 Q4WA-E_13-001
All devices Hose nozzle (CPC in-line socket type PMC 2204) 2 EOA 077
All devices Power cable 1 ---
V3 LOOP 9 / 41

3 Setup and operating buttons
3.1 Setup of the device
12
3
4
Fig. 1: Front side LOOP
1 Controller with temperature display and control buttons (soft buttons)
2 Cover over the tank lid
3 Ventilation openings
4 4 feet
10 / 41 LOOP V3

4
5
6
7
1
2
3
3 RS 232 interface (socket)
4 Device panel plug
5 Box for 2 safety fuses
6 Mains switch
7 Rating label
Fig. 2: Rear LOOP L 100
V3 LOOP 11 / 41
2Pump connection OUT outflow (to consumer)
1Pump connection IN inlet (back from consumer)

4
5
6
7
1
2
3
Fig. 3: Rear LOOP L 250
3 RS 232 interface (socket)
4 Device panel plug
5 Box for 2 safety fuses
6 Mains switch
7 Rating label
Fig. 4: Tank with filler nozzle and cover
Fig. 5: Hose nozzle EOA 077
12 / 41 LOOP V3
1Pump connection OUT outflow (to consumer)
2Pump connection IN inlet (back from consumer)

11
LOOP 100 LOOP 250
1
Fig. 6: Ventilator fan (1) on the underside
The device sucks up fresh air from below!
3.2 Mains switch
The mains switch can be set to the following positions:
Position [I] switches the device on.
Position [O] switches the device o.
V3 LOOP 13 / 41

3.3 Operating buttons
The three operating buttons can be used to control the functions of the
device.
Use the [Set] button to configure the set temperature.
Use the [Menu] button to pull up the menu, in order to configure set-
tings.
Use the[Stop] or [Start] button to switch the device to standby or oper-
ation mode.
The device supports two operating modes.
In Standby operation mode, the device's pump and temperature
control unit are turned o. Power is supplied to the display on the
device. This operating mode is suitable for adjusting settings, for
example.
In Operation mode, the components of the device are activated.
Use the [Display] button to switch back and forth between the home
screen and the display window for warnings (only possible if a warning
has been generated by the device).
Use the [Down] and [Up] arrow buttons
to navigate through the menu and/or
change set values.
Use the [OK] input button to confirm the selection in the display.
Use the[ESC] menu item to navigate one window back in the menu.
If no entry is made in the home screen for 10 seconds, the operating
button configuration will fade out and the temperature display will be
magnified in the display. If you press on any one of the operating but-
tons, they will darken again.
If no entry is made in the menu for 30 seconds, then the display will
return to the home screen.
3.4 Overtemperature cutout and overtemperature
An overtemperature cutout with an electric self-retaining mechanism is
installed in the device. In the event of overtemperature, (> 90 °C ±3 °C) the
overtemperature cutout permanently switches o the device. For safety rea-
sons, the device does not restart automatically.
1. Switch o the device at the mains switch.
2. Eliminate the cause of the error.
3. Wait approx. 5 minutes to allow the device to cool o.
4. Switch the mains switch back to position [1].
The device starts.
3.5 RS 232 interface
You can use the RS 232 interface to control certain device functions, such
as set temperature, via a control station/PC. You can develop and use your
own programs to control the device.
Fig. 7: Operating buttons in the home
screen
14 / 41 LOOP V3

4 Commissioning
4.1 Set up and connect the hoses
WARNING!
Danger of device falling or overturning
Crushing, impacts
Do not tilt the device.
Position the device on an even, non-slip surface with a suf-
ficient load carrying capacity.
Do not position the device close to table edges.
Take the following information into account:
Hold on under the device to lift and carry it.
Set device on a level surface.
Be careful not to cover the ventilation openings, including the ones
under the device.
Use a hose clip or cable tie to secure the hose nozzle and hose against
slippage!
The pump connections on the device are self-closing. This ensures that
liquid does not flow out of the device.
The included hose nozzles do not close.
1. Plug the hose nozzle into the pump connection.
Spring tension locks the locking plate in the up position. A clicking
noise indicates that the hose nozzle is securely locked in the con-
nection.
If the hose nozzle cannot be plugged into the pump connection, then the
locking plate on the pump connection is already locked. Unlock the locking
plate by pressing down as shown in the pump connection illustration.
1. Unlock the locking plate by pressing down as shown in the pump con-
nection illustration.
2. Pull the nipple out of the pump connection.
Liquid will immediately flow out of the hose.
Connect the hose to the device
Fig. 8: Pump connection
Remove hose from the device
V3 LOOP 15 / 41

4.2 LAUDA heat transfer liquid
Note the following instructions:
The heat transfer liquids each cover a recommended temperature range
and must be suitable for the temperature range associated with their
application.
Never use contaminated or degenerated heat transfer liquids.
You can request a copy of the safety data sheets for the heat transfer
liquid at any time, if necessary.
Table 3: Approved heat transfer liquids
LAUDA
designation Chemical name Temperature range in °C
Viscosity (kin) in
mm²/s at
(at 20 °C)
Viscosity (kin) in
mm²/s at
temperature
Container size
Cat. No.
5 L 10 L 20 L
Aqua 90 Decalcified
water 5 -90 1¾LZB 120 LZB 220 LZB 320
Kryo 30 Monoethylene glycol/water
mixture -30 -90 4 50 at -25 °C LZB 109 LZB 209 LZB 309
The water content decreases during longer periods of operation at
higher temperatures and the mixture becomes combustible (flash point
119 °C). Check the mixing ratio using a hydrometer.
The proportion of alkaline earth ions in the water must be between
0.71 mmol/L and 1.42 mmol/L (equivalent of 4.0 and 8.0 °dH). Harder
water leaves limescale deposits in the device.
The pH value of the water must be between 6.0 and 8.5.
Due to their corrosive properties, distilled, deionized, fully desalinated
(FD) water, or ocean water cannot be used. High-purity water and dis-
tillates are suitable as a medium after 0.1 g of soda (Na2CO3, sodium
carbonate) is added for every liter of water.
Avoid chlorine content in the water at all costs. Do not add chlorine to
the water. Cleaning agents and disinfectants, for example, contain
chlorine.
The water must be free of impurities. Water with iron content is unsuit-
able due to rust formation and untreated river water is unsuitable due to
algae growth.
The addition of ammonia is not permitted.
Heat transfer liquid Kryo 30
Heat transfer liquid, water
16 / 41 LOOP V3

4.3 Filling with heat transfer liquid and draining
WARNING!
Overflow of heat transfer liquid
Electric shock
Do not overfill the device. Monitor the liquid level in the
tank.
WARNING!
Spraying of heat transfer liquid
Electric shock
Avoid spraying heat transfer liquid.
CAUTION!
Risk of heat transfer liquid escaping due to the use of unsuitable
hoses
Scalding, cold burns
The temperature and media resistance of the hoses must be
suitable for the application.
NOTICE!
Use of unsuitable heat transfer liquids
Device damage
In accordance with the descriptions of the LAUDA heat
transfer liquids in this operating manual, only the heat
transfer liquids of water and water/glycol are approved.
The heat transfer liquid must be chosen based on the tem-
perature range of its application.
Note the following instructions:
The device is designed exclusively for non-flammable heat transfer liq-
uids.
LAUDA is not liable for damages resulting from the use of unsuitable
heat transfer liquids.
Only connect pressure-sealed consumers to the device.
Once the consumer is connected, the liquid level in the tank will sink as
the consumer is filled. Top up the heat transfer liquid!
When consumers are higher up, the external volume can run empty
when there is a standing pump and intrusion of air into the thermostatic
circuit, even in a closed circuit. This will cause the tank in the device to
overflow!
V3 LOOP 17 / 41

The tank is ventilated through the tank lid. Once the device is filled, do
not tip it and never set it upside down!
Empty the device before transporting it.
1. Slide and remove the cover over the filler nozzle towards the back of
the device.
2. Open the tank lid by turning it in a counterclockwise direction.
3. Fill the tank with heat transfer liquid. Use a standard spray bottle or a
funnel to fill it.
4. Put the tank lid on and close it by turning it in a clockwise direction.
5. Slide in the cover over the filler nozzle.
WARNING!
Contact with hot or cold heat transfer liquid
Scalding, cold burns
Bring the heat transfer liquid to room temperature before
draining.
Take the following information into account:
Empty the device when decommissioning it or if there is danger of frost!
The pump connections on the device are self-closing. This ensures that liquid
does not flow out of the device.
1. The device is switched o.
2. In order to empty the device, stick the hose nozzle into a pump con-
nection and hold the end of the hose over a suitable container.
Liquid will immediately flow out of the device.
The tank and the hydraulic line in the device will empty out parti-
ally.
3. Plug the hose nozzle into the other pump connection.
The tank and the hydraulic lines in the device will empty out com-
pletely.
Filling the tank
Fig. 9: Tank lid
Empty the tank
18 / 41 LOOP V3

4.4 Establishing a mains connection
NOTICE!
Use of impermissible mains voltage or mains frequency
Device damage
Compare the type plate with the available mains voltage and
mains frequency.
Take the following information into account:
Only use the supplied power cable for the power supply.
The mains plug disconnects the device from the power supply. The mains
plug must be easy to identify and access.
Only connect the device to sockets with a protective earth conductor
(PE).
The devices must be secured with a 16 A circuit breaker during installa-
tion.
Exception: Devices with 13 A UK plugs.
V3 LOOP 19 / 41

5 Operation
5.1 General safety instructions
CAUTION!
Risk of heat transfer liquid escaping during operation due to
open consuming unit
Scalding, cold burns
Always use hydraulically sealed consuming units.
CAUTION!
Risk of heat transfer liquid escaping due to the use of unsuitable
hoses
Scalding, cold burns
The temperature and media resistance of the hoses must be
suitable for the application.
CAUTION!
Overheating exceeding the maximum temperature of the appli-
cation
Scalding, burning
In cases of error, temperatures of up to 125 °C may occur
on the heat sink in the device. Do not touch the heat sink.
NOTICE!
Overheating of the pump
Device damage
Never operate the device without heat transfer liquid.
20 / 41 LOOP V3