TTP Coffee Sensor staff is providing this guide to help our customers install and use our sensor.
This material includes the following:
- Assembly instructions;
- Product maintenance and repair;
- Troubleshooting guide;
- Coffee Sensor tips and tricks.
The Coffee Sensor box contains:
- TTP Coffee Sensor thermometer with stainless steel universal E61 adapter;
- Two copper washers;
- Allen key;
- Fix key;
- Written instructions.
- Assembly instructions
When assembling and installing our sensor, please check and be sure that the temperature of the machine is low. Also push the extraction lever up (open position ), in order to release any water pressure from the E61 group head and after this, put the lever back to closed position.
After these two very important security checks, you can start and remove the hex screw located on front of the group head, using the provided small Allen key.
During the entire process, be careful not to damage / scratch the stainless steel body of your coffee machine. Work slowly and carefully.
After a successful disassemble of the hex screw, leave the OEM white Teflon washer that your coffee machine already had into the the small slot, where the hex screw was originally inserted.
Check before installing the sensor, that on the fillet of the product, the small coper washer is present.
After this check, feel free to screw the sensor into the E61 group head using the small fix key also included in the installation kit.
To recapitulate, between the sensor and the group head, there needs to be ONE OEM TEFLON WASHER (the original washer of your coffee machine) AND ONE COPER WASHER (provided with the sensor).
TTP Coffee Sensor offers two washers, one to be used with the sensor and a spare one.
After screwdriving the sensor into the group head, feel free to position the LCD screen of the sensor into the correct horizontal position, by gently spinning the sensor.
After the installation of the sensor, one important and last security check is the blind basket testing.
During this procedure, don’t stand in front of the sensor and do not look directly into the LCD screen of the sensor. It is safer to stand aside and watch for any possible water leaks.
This testing needs to be made at coffee machine normal working pressure.
- Start the check process by installing the blind basket into your portafilter;
- Make sure that the sensor is correctly inserted into the group head and is tighten enough;
- Start the coffee machine pump by rising the lever up, into open position;
- Leave the pump running for a few seconds, until the sound indicates that the water is blocked by the blind basket;
- Stop the pump by lowering the lever into close position.
This last step ends our security check.
If there were not any water leaks present, the sensor is ready to be used.
If there were leaks between the stainless steel body of the sensor and the group head, tighten the screw even more if possible. In some cases, you could use Teflon tape (small portion only) in order to enhance bonding between the group head and Coffee Sensor. But that’s not usually necessary.
If the leak is coming from inside the sensor, it means that there could be manufacturing faults present.
In this situation, urgently contact the provider or Coffee Sensor staff and DO NOT USE THE SENSOR !
Before using the coffee machine again, unscrew the sensor and put the original hex screw back into the group head.
Before this procedure, check again that the temperature of the machine is low, close to room temperature.
- Product maintenance and repair
Our sensor does not need special maintenance procedures during use. For repairs, please feel free to contact our staff in order to receive any special instructions.
One of the most common issues with the sensor is replacing the battery. We need to mention that Coffee Sensor uses LR44 battery.
When replacing the battery, please check and be sure that the temperature of the machine and of the sensor is low, close to room temperature.
When looking directly at the sensor, at the top of the product’s case, you will see that there is a small gap, specially created for inserting something thin, like your fingernail. Insert fingernail into the gap and pull the sensor’s display towards you in order to open and remove the product’s mask, that has the LCD screen and mainboard with the LR44 battery on it.
Replace the battery by untightening one of the two metal clips that hold the battery into place. After installing the new battery on to the mainboard, close the metallic clip back into correct position. After this step, reinsert the mask on to the sensor’s body. Make sure that the sensor is surely closed.
- Troubleshooting guide
The daily use of the sensor is pretty simple and straightforward.
- If the LCD screen readings starts to show fading digits, feel free to replace the LR44 battery using this guide.
- To change the display mode between Celsius / Fahrenheit readings, press the C/F button.
- If the user gets an ERR / HHH / – – – display readings, dismantle the sensor using Point 2 instructions written just above in order to reach the mainboard and battery location. Watch for disconnected wires on the mainboard or a possible movement of the battery from the original position.
If one of the wires disconnected from the two welding points, contact Coffee Sensor staff for a replacement or, if possible and if you feel up to the process and steps, try to reweld the wire. In any case, please contact us first.
- The sensor has an automatic shut off system after 11 minutes of continuous running, to preserve battery’s lifespan.
- The sensor has a HOLD function. If the user wants to freeze temperature reading from a certain moment, just press the HOLD button.
- Originally, the sensor has a very small and thin protection film installed on the screen. When too used, feel free to remove it.
- There is no need for calibration of the sensor. We trust the manufacturer regarding this procedure and due to our own and customers experience and feedback regarding the true and real readings of our product. Coffee Sensor was tested along side with various thermocouples models with great result. The only thing that made a difference between these two temperature reading products is the reading speed, not accuracy. At the end of the tests, the Coffee Sensor always got the same temperature indicated by the thermocouples reading unit.
- Coffee Sensor tips and tricks before using our product:
- Remember, the sensor indicates two temperatures: water and group head idle temperature.
- The readings may vary with different coffee machines, pressurestat setting and other conditions (like room temperature, location altitude) and is 100% variable during the entire process of espresso extraction.
- The readings from the LCD can indicate 1 or 2 degrees in plus or minus compared to the temperature inside the coffee puck. The difference is in direct connection with your cooling flush procedure.
- In general, the indicated temperature on the LCD will be higher than the one you actually have in the coffee puck when you use the flush and wait technique or lower when you use the flush and go technique.
Our clients and us usually tend towards a 90-94 max degrees on the LCD, during extraction. 92 usually does the job 😊 If you go lower, you should have a sour taste in the cup and if you go much higher, you should feel a burn like taste. Also, each coffee usually has a perfect extraction temperature. Ask your coffee roaster for details.
- Tend towards the most stable temperature during extraction. That is something you can play with using different cooling flush techniques and very important, by choosing the perfect moment when to stop the process of cooling down the group head and start the extraction.
- Coffee Sensor is not a wonder 😊Remember that the extraction means more than figures. Coffee Sensor should be used in conjunction with all elements that create a perfect coffee extraction, like the way pouring looks, the sounds your coffee machine makes, the warm up time and so on.
- We recommend letting your coffee machine warm up more than the usual used period of 30 minutes. After an hour of heating up, you will always have a way better taste in the cup than a coffee extracted on a cooler group head and system.
- Create as fast as possible a pattern or connection between the temperature you see on the LCD and taste. After all, taste is very important in this equation and this is what matters in the end, for you to enjoy the coffee and not least, the entire process of extraction.
For any other type of problems, questions or remarks, just contact your supplier or the manufacturer.
WARNING: READ THE FOLLOWING CAREFULLY BEFORE INSTALLING AND USE OUR PRODUCT
COFFEE SENSOR PRODUCTS HAVE BEEN DESIGNED AND DEVELOPED TO MEET INDUSTRY NORMS AND SAFETY REQUIREMENTS.
PRIOR TO INSTALLING COFFEE SENSOR PRODUCTS, IT IS THE PURCHASER’S RESPONSIBILITY TO CONSULT AND READ THE INSTALLATION AND SAFETY INSTRUCTIONS.
WHILE PRODUCT INSTALLATION GUIDELINES MAY BE PROVIDED, ANY SUCH GUIDELINES ARE INTENDED ONLY TO USERS THAT KNOW AND UNDERSTAND THE ENTIRE PROCESS OF INSTALLATION AND USAGE.
IF YOU DON’T UNDERSTAND ALL REQUIREMENTS, INSTALLATION AND SAFETY INSTRUCTIONS WRITTEN IN THESE GUIDELINES, PLEASE CONTACT A COFFEE MACHINE SERVICE AND MAINTENANCE COMPANY AND TAKE ADVANTAGE FROM PROFESSIONAL SERVICES.
IN NO EVENT MAY TTP COFFEE SENSOR S.R.L. BE HELD RESPONSIBLE FOR UNSAFE INSTALLATION, TESTING OR MAINTENANCE OF OUR COFFEE SENSOR OR FOR ANY PROPERTY DAMAGE OR PERSONAL INJURIES ARISING OUT OF THE USE, HANDLING OR INSTALLATION OF OUR PRODUCT.
The information in this document is subject to change without notice.
While efforts have been made to make these written instructions helpful and accurate, due to potential print or spelling errors, TTP Coffee Sensor S.R.L. does not warrant the accuracy of current printed information.