Please read carefully before operating your single boiler, vibratory pump espresso machine. For a list of specifications, included accessories, and other details, check out the ECM Puristika product page. For setup information, please see the...

<p>Please read carefully before operating your single boiler, vibratory pump espresso machine. For a list of specifications, included accessories, and other details, check out the <a href="https://clivecoffee.com/products/ecm-puristika-espresso-machine" rel="noopener">ECM Puristika product page</a>. For setup information, please see the <a href="https://clivecoffee.com/pages/help-center?hcUrl=%2Fen-US%2Fecm-puristika-espresso-machine-setup-guide-884231">Setup Guide</a>.</p><h3 id><img alt="Screen Shot 2022-01-10 at 1.15.37 PM" class="hs-image-align-none fr-fic fr-dii" src="https://4309359.fs1.hubspotusercontent-na1.net/hubfs/4309359/Screen%20Shot%202022-01-10%20at%201.15.37%20PM.png" style="width: 688px;" width="688"></h3><h3 id="getting-started">Getting Started:&#xA0;</h3><p>After reading through the <a href="https://clivecoffee.com/pages/help-center?hcUrl=%2Fen-US%2Fecm-puristika-espresso-machine-setup-guide-884231">ECM Puristika Setup Guide</a>, test your water. Espresso machines have specific requirements when it comes to water. There are two primary considerations: <strong>filtration and hardness.&#xA0;</strong>Please carefully read about <a href="https://clivecoffee.com/pages/help-center?hcUrl=%2Fen-US%2Fthe-importance-of-water-composition-in-espresso-883777">the importance of water in espresso</a> to understand <a href="https://clivecoffee.com/pages/help-center?hcUrl=%2Fen-US%2Fhow-water-affects-your-espresso-machine-883778" rel="noopener noreferrer" target="_blank">how water affects your espresso machine</a>. For further learning, check out <a href="https://clivecoffee.com/products/coffee-school-water-101-with-third-wave-water" rel="noopener">Coffee School&apos;s Water 101.</a></p><p><em>Note: It&apos;s essential to test your water, filter, and soften to obtain 35-85 ppm to avoid scale and damage to your machine. RO (reverse osmosis) or distilled water does not contain enough mineral content and could cause issues to your machine. The <a href="http://www.scaa.org/?d=water-standards&amp;page=resources" rel="noopener" target="_blank">SCA Water for Brewing Standards</a> explains what&apos;s needed to obtain water that&apos;s suitable for your machine and coffee.</em></p><p><strong><br>First Time Setup:&#xA0;</strong>Connecting external water reservoir&#xA0;</p><ul><li>Attach the connecting hoses to the back of the machine. Put the other end of the connecting hoses through the corresponding holes of the water tank lid. Attach the silicone hose on the inside of the water tank lid. Once connected, fill the water tank with your filtered, softened water and place the lid with the silicone hoses on the water tank. Once the machine turns on, check the connection for leaks.&#xA0;<br><img alt="Screen Shot 2022-01-07 at 12.19.34 PM" class="hs-image-align-none fr-fic fr-dii" src="https://fs.hubspotusercontent00.net/hubfs/4309359/Screen%20Shot%202022-01-07%20at%2012.19.34%20PM.png" style="width: 688px;" width="688"></li></ul><p><strong>First Time Setup:&#xA0;</strong>Connecting to Power &amp; Filling Boilers</p><ul><li>Insert the power cable properly into the socket and turn the on/off switch on the back of the machine down to the &#x201C;-&#x201D; to turn the machine on. The orange light will illuminate indicating it&apos;s on. After a few seconds, a pump noise should occur which indicates the machine is filling the boilers. The PID will light up and display the temperature. Once it reached 93&#xB0;C (which should take about 10 minutes), the machine is fully heated and ready to use.</li></ul><h3 id="programming-the-pid">Programming the PID:&#xA0;</h3><p>The Puristika&apos;s PID allows users to adjust the temperature of the coffee boiler (t1), program cleaning reminders (CLN), eco mode (ECO) to automatically turn off your machine, and temperature more (o) to select between C for Celsius and F for Fahrenheit.&#xA0;</p><ul><li>To enter into programming mode, press the plus and minus buttons simultaneously until t1 appears. The minus button allows you to scroll through the settings menu. The plus button selects the setting you wish to edit. Wait a moment for the PID to read the setting you have edited and then press the minus button to exit programming mode.&#xA0;<br><br><img alt="Screen Shot 2022-01-07 at 2.53.50 PM" class="hs-image-align-none fr-fic fr-dii" src="https://fs.hubspotusercontent00.net/hubfs/4309359/Screen%20Shot%202022-01-07%20at%202.53.50%20PM.png" style="width: 688px;" width="688"></li></ul><p><strong>t1: Temperature Setting</strong> &#x2014; use the +/- buttons to raise and lower brew temperature. Hotter water increases extraction and is best used on lighter roasted coffees whereas cooler temperatures reduce extraction which is best on darker roasts.&#xA0;</p><p><strong>CLn: Group Cleaning Mode</strong> &#x2014; with the Puristika you have the option to program a reminder for cleaning. The machine is set to 0 at the time of delivery, meaning no reminder is programmed yet. You can program in steps of 10 (0-200) by pressing + and &#x2013; to prompt you to clean after the selected amount of brew cycles. For example, if you have programmed 90, you will be prompted with a &#x201C;CLn&#x201D; on the display to clean the brew group after 90 brew cycles.&#xA0;</p><p><em>We recommend cleaning the brew group after about 90 to 140 brew cycles. Only a brew over 15 seconds counted as a brew cycle.</em></p><p><strong>ECo: Eco Mode&#xA0;</strong>&#x2014; gives you the option to set a timer that will automatically switch off your machine in steps of 30 minutes. After the last brewing process, the machine will start the timer. The timer will be running in the background and is not visible. When the timer ends the machine will automatically turn off. To reactivate the machine, either press a PID key or switch the machine off and on again.</p><p><strong>o: Temperature Mode</strong> &#x2014; You can also set whether the boiler temperature values of &#x201C;t1&#x201D; should be displayed in &#xB0;C or &#xB0;F.</p><h3 dir="ltr" id="isPasted"><span style="text-decoration:none;">Additional Resources:&#xA0;</span></h3><p dir="ltr"><span style="text-decoration:none;">If you need help dialing in your equipment or pulling shots, check out the articles below or&#xA0;</span><a href="https://clivecoffee.com/pages/contact" style="text-decoration:none;"><span style="text-decoration:underline;">contact our coffee experts and technicians</span></a><span style="text-decoration:none;">.</span></p><ul><li dir="ltr"><a href="https://clivecoffee.com/blogs/learn/how-to-make-great-espresso" style="text-decoration:none;"><span style="text-decoration:underline;"><u>How to Pull the Perfect Shot</u></span></a></li><li dir="ltr"><u><a href="https://help.clivecoffee.com/en-US/dialing-in-your-grinder-883801" style="text-decoration:none;"><span style="text-decoration:underline;">Dialing In Your Grinder</span></a></u></li><li dir="ltr"><u><a href="https://clivecoffee.com/products/home-barista-online-intro-to-espresso" style="text-decoration:none;"><span style="text-decoration:underline;">Coffee School: Intro to Espresso</span></a></u><span style="text-decoration:none;"><u>&#xA0;</u></span></li><li dir="ltr"><u><a href="https://help.clivecoffee.com/en-US/articles/getting-started-203675" style="text-decoration:none;"><span style="text-decoration:underline;">Clive Help Center: Getting Started</span></a></u></li><li dir="ltr"><u><a href="https://clivecoffee.com/blogs/learn/espresso-machine-cleaning-maintenance" style="text-decoration:none;"><span style="text-decoration:underline;">Cleaning &amp; Maintenance</span></a></u></li><li dir="ltr"><u><a href="https://clivecoffee.com/blogs/learn" style="text-decoration:none;"><span style="text-decoration:underline;">Clive Coffee: Blogs &amp; Videos</span></a></u></li><li><a href="https://clivecoffee.com/pages/help-center?hcUrl=%2Fen-US%2Fecm-puristika-espresso-machine-setup-guide-884231"><u>ECM Puristika Setup Guide</u></a></li></ul><p>&#xA0;</p><p>&#xA0;</p><h3 id="-1">&#xA0;</h3>

ECM Puristika Espresso Machine: User Manual

Please read through the entirety of the setup guide before following along. If you have any questions, contact our team at Clive Coffee. Additional information can be found in the ECM Puristika User Manual. Step 1: Inspect the box and the machine...

<p>Please read through the entirety of the setup guide before following along. If you have any questions, <a href="https://clivecoffee.com/pages/contact" rel="noopener" target="_blank">contact our team at Clive Coffee</a>. Additional information can be found in the <a href="https://clivecoffee.com/pages/help-center?hcUrl=%2Fen-US%2Fecm-puristika-espresso-machine-user-manual-884230">ECM Puristika User Manual. </a></p><div class="hs-embed-wrapper" data-responsive="true" data-service="youtube" style="position: relative; overflow: hidden; width: 100%; height: auto; padding: 0px; max-width: 560px; min-width: 256px; display: block; margin: auto;"><div class="hs-embed-content-wrapper"><div style="position: relative; overflow: hidden; max-width: 100%; padding-bottom: 56.25%; margin: 0px;"><iframe allowfullscreen frameborder="0" height="315" src="https://www.youtube.com/embed/PXjGTd1n5MI" style="position: absolute; top: 0px; left: 0px; width: 100%; height: 100%; border: none;" title="YouTube video player" width="560"></iframe></div></div></div><h3 id="step-1-inspect-the-box-and-the-machine-for-damage">Step 1: Inspect the box and the machine for damage</h3><ul><li>Remove the machine from the box and place it on a stable, level surface.</li><li>Before adding water and turning on the machine, inspect for damage that may have occurred during shipping. If you notice any damage, <a href="https://clivecoffee.com/pages/contact">contact us immediately</a>.</li><li>Save all packaging in case of <a href="https://clivecoffee.com/pages/returns-and-exchanges">returns</a> and<a href="https://clivecoffee.com/pages/espresso-machine-repair-service">&#xA0;repairs</a>.</li></ul><h3 id="step-2-water-quality-and-connecting-to-the-water-reservoir">Step 2: Water quality and connecting to the water reservoir</h3><ul><li>Before introducing water to your machine, it&apos;s essential to test it to ensure it&apos;s adequately soft, around 50 ppm (parts per million). Use the included water test strips from your home barista starter kit to verify the hardness of your water. To learn more about our recommendations for water quality, check out our blog post, <a href="https://clivecoffee.com/blogs/learn/the-importance-of-water-and-your-espresso-machine" rel="noopener" target="_blank">The Importance of Water and Your Espresso Machine.</a> Do not use distilled or Zero water in your espresso machine.&#xA0;</li><li>Attach the connecting hoses to the back of the machine. Put the other end of the connecting hoses through the corresponding holes of the water tank lid. Attach the silicone hose on the inside of the water tank lid.<br><img alt="Screen Shot 2022-01-07 at 12.19.34 PM" class="hs-image-align-none fr-fic fr-dii" src="https://fs.hubspotusercontent00.net/hubfs/4309359/Screen%20Shot%202022-01-07%20at%2012.19.34%20PM.png" style="width: 688px; height: auto;" width="688"></li><li>At this time, fill the water tank with your filtered, softened water and place the lid with the silicone hoses on the water tank.</li></ul><h3 id="step-3-turning-on-your-machine-and-filling-your-boilers">Step 3: Turning on your machine and filling your boilers</h3><ul><li>Insert the power cable properly into the socket and turn the on/off switch on the back of the machine down to the &#x201C;-&#x201D; to turn the machine on. The orange light will illuminate indicating it&apos;s on.&#xA0;</li><li>After a few seconds, a pump noise should occur which indicates the machine is filling the boilers. The PID will light up and display the temperature. Once it reached 93&#xB0;C (which should take about 10 minutes), the machine is fully heated and ready to use.</li><li>To accelerate the heating process and to ensure the group head is fully heated, lift the brew lever for about 10 seconds and allow water to run through the group.</li></ul><p><em>Note: It&#x2019;s normal for the indicator of the pump pressure gauge to move slightly during the heating-up phase.</em></p><h3 id="step-4-programming-the-pid"><strong>Step 4: Programming the PID</strong></h3><ul><li>In the settings of the PID, you can adjust the temperature of the coffee boiler (t1), program cleaning reminders (CLN), eco mode (ECO) to automatically turn off your machine, and temperature more (o) to select between C for Celsius and F for Fahrenheit.&#xA0;</li><li>To enter into programming mode, press the plus and minus buttons simultaneously until t1 appears.</li><li>The minus button allows you to scroll through the settings menu. The plus button selects the setting you wish to edit. Wait a moment for the PID to read the setting you have edited and then press the minus button to exit programming mode.&#xA0;</li><li>For details on how to program your machine, see the ECM Puristika User Manual.</li></ul><h3 id="step-5-adjusting-the-expansion-valve"><strong>Step 5: Adjusting the expansion valve</strong></h3><ul><li>Adjusting the expansion valve allows you to adjust the pressure of your machine, choosing a value between 8.5 and 12 bar. <strong><strong><br></strong></strong></li><li>To adjust the brewing pressure, place the portafilter with the blind basket into the group head. Lift the brew lever to engage the pump then move the knob clockwise to raise the pressure and counter-clockwise to lower it. Once you reach your desired pressure, (indicated on the pressure gauge on the left side of the machine), lower the brew lever.</li></ul><h3 id="step-6-pulling-a-shot"><strong>Step 6: Pulling a Shot:</strong></h3><h3 dir="ltr" id="isPasted"><span style="text-decoration:none;">Additional Resources:&#xA0;</span></h3><p dir="ltr"><span style="text-decoration:none;">If you need help dialing in your equipment or pulling shots, check out the articles below or&#xA0;</span><a href="https://clivecoffee.com/pages/contact" style="text-decoration:none;"><span style="text-decoration:underline;">contact our coffee experts and technicians</span></a><span style="text-decoration:none;">.</span></p><ul><li dir="ltr"><a href="https://clivecoffee.com/blogs/learn/how-to-make-great-espresso" style="text-decoration:none;"><span style="text-decoration:underline;"><u>How to Pull the Perfect Shot</u></span></a></li><li dir="ltr"><u><a href="https://help.clivecoffee.com/en-US/dialing-in-your-grinder-883801" style="text-decoration:none;"><span style="text-decoration:underline;">Dialing In Your Grinder</span></a></u></li><li dir="ltr"><u><a href="https://clivecoffee.com/products/home-barista-online-intro-to-espresso" style="text-decoration:none;"><span style="text-decoration:underline;">Coffee School: Intro to Espresso</span></a></u><span style="text-decoration:none;"><u>&#xA0;</u></span></li><li dir="ltr"><u><a href="https://help.clivecoffee.com/en-US/articles/getting-started-203675" style="text-decoration:none;"><span style="text-decoration:underline;">Clive Help Center: Getting Started</span></a></u></li><li dir="ltr"><u><a href="https://clivecoffee.com/blogs/learn/espresso-machine-cleaning-maintenance" style="text-decoration:none;"><span style="text-decoration:underline;">Cleaning &amp; Maintenance</span></a></u></li><li dir="ltr"><u><a href="https://clivecoffee.com/blogs/learn" style="text-decoration:none;"><span style="text-decoration:underline;">Clive Coffee: Blogs &amp; Videos</span></a></u></li><li><a href="https://clivecoffee.com/pages/help-center?hcUrl=%2Fen-US%2Flucca-e61-flow-control-installation-how-it-works-884237"><u>LUCCA Flow Control Installation and Operation Guide</u></a></li></ul>

ECM Puristika Espresso Machine: Setup Guide

Clive Coffee

Getting Started

ECM Puristika

Plumbing an Espresso Machine for Flojet Installation

Water Filter and Softener System Installation

The Importance of Water Composition in Espresso

Formatting Examples

How Water Affects Your Espresso Machine

Upgrading your Water Softener Cartridge from 2 Cartridges to 1

How Water Can Make or Break Your Coffee

Water

Using Grindz to Clean Your Grinder

Dialing In Your Grinder

Jammed Burrs in your Espresso Grinder

How to Clean Your Grinder

Espresso Tech 101: Testing a Motor Capacitor

Grinder Cleaning & Maintenance

Espresso Tech 101: Basic Bench Testing

Removing and Cleaning Group Head Screens

How to Clean and Backflush E61 Group Head Machines

Understanding Your Brew Pressure Gauge

Using Rinza to Clean Your Steam Wand

Steam / Hot Water Leak: Diagnosis & Repair

PID Settings and Clive Recommended Settings

How to Clean and Backflush (non-E61 Group Head) Espresso Machines

E61 Cam Lubrication for Sticky/Squeaky Brew Lever

Water: Descaling Your Espresso Machine

E61 Gicleur Inspection and Cleaning

Cup Ratings; What do they mean?

Espresso Tech 101: Vibratory Pump Re-Priming

Espresso Machine Cleaning & Maintenance

Espresso Brew Ratios From La Marzocco

What is Channeling?

How to Pull the Perfect Shot of Espresso

Single baskets: What's the deal?

How to Tamp (Correctly)

Brew Ratios, Basket Sizes, and the Confusion over a "Double Shot"

Clive's Flow Control Recipe

Coffee & Pulling Shots

Steam Wand Tips and Milk Steaming Speed

How to Make Latte Art

How to Steam Milk

Steaming Milk

Espresso 101

La Marzocco: Receiving Your Espresso Machine

Unboxing Your Machine

Machine Serial Number Locations

Unboxing

Repackaging the ECM Synchronika

Repackaging the Profitec Pro 700

Repackaging the LUCCA A53/A53 Mini (Vivaldi II/Mini Vivaldi II)

Repackaging the LUCCA A53/A53 Mini (Vivaldi II/Mini Vivaldi II) with Instapack

Repackaging the Profitec Pro 300

Repackaging the ECM Casa V

Repackaging the LUCCA M58

Repackaging a QM67 in Pro 500 Box

Repackaging the ECM Classika

Repackaging the Profitec Pro 600

Repackaging the Rancilio Silvia Pro or Pro X

Repackaging the Profitec Pro 500

Repackaging the Profitec Pro 800

Repackaging the ECM Puristika

Repacking the Lelit Mara X

Repackaging the Lelit Bianca

Repackaging the Lelit Elizabeth

Repackaging the Eureka Atom 65 / 75

Repackaging the Bezzera Duo DE/MN

Repackaging the Bezzera BZ10

Repackaging the Alex Duetto

Repackaging the Eureka Zenith

Repackaging the Macap M7D

Repackaging the Profitec T64

Repackaging Instructions

Clive Coffee Warranty

Repairs

Getting Warranty Service

Clive Coffee 1-year Commercial Warranty

Espresso Machine: Need Technical Assistance?

Grinders: Need Technical Assistance?

Warranty and Repairs

Credit Card Charges for Espresso Machines

Free ground shipping over $75

Changes, Holds, or Pick-Up Requests to Orders

How do I modify an order once it's been placed?

Returns & Exchanges

How to track a freight shipment

Order Changes, Returns, Shipping & Payment

Warranty, Ordering & Returns

Open Box vs Certified Pre-Owned

Trade-In Program Details

Open Box, Certified Pre-Owned & Trade-In Program

LUCCA A53 Mini: Using Pre-Infusion

LUCCA A53 Mini / Mini Vivaldi II: Draining the Boiler

LUCCA A53 Mini: User Manual

LUCCA A53 Mini: Setup Guide Video

LUCCA A53 Mini / Mini Vivaldi: Adjusting The Expansion Valve

LUCCA A53 Mini / Mini Vivaldi: Vacuum Breaker

LUCCA A53 Mini / Mini Vivaldi: Cleaning the Fill Probe

LUCCA A53 Mini / Mini Vivaldi: Replacing Safety Valve

LUCCA A53 Mini / Mini Vivaldi: Steam Boiler Temperature Sensor Cleaning and Replacement

LUCCA A53 / A53 Mini / Vivaldi / Mini Vivaldi: Cleaning or Replacing Group Head Solenoid (pre-2019)

LUCCA A53 Mini / Mini Vivaldi: Cleaning Fill Solenoid

LUCCA A53 / A53 Mini / Vivaldi: Group Head Cleaning and Maintenance

LUCCA A53 Mini / Mini Vivaldi: Hot Water Solenoid Disassembly

LUCCA A53 Mini / Mini Vivaldi: Cleaning Flow Meter

LUCCA A53 Mini / Mini Vivaldi: Cleaning Fill Probe and Sealing Boiler Connection

LUCCA A53 Mini / Mini Vivaldi: Inspecting and Cleaning the Water Tank Check Valve

LUCCA A53 Mini / Mini Vivaldi: Inspecting Inlet Tubing

Lucca A53 Mini / Mini Vivaldi: Expansion Valve (OPV) Service and Replacement

Cleaning/Maintenance

LUCCA A53 Mini: Steam Boiler Over-pressurizing

LUCCA A53 Mini / Mini Vivaldi: Vibratory Pump Replacement

LUCCA A53 Mini: No Water From Group Head

LUCCA A53 Mini: Machine Not Turning On

LUCCA A53 Mini / Mini Vivaldi: OPV / Steam Gauge Fitting Leak

LUCCA A53 Mini: Priming the pump

LUCCA A53 Mini: Steam Boiler Not Heating

LUCCA A53 Mini / Mini Vivaldi: Replacing the Steam Lever

LUCCA A53 Mini: No Hot Water From Water Tap

LUCCA A53 Mini / Mini Vivaldi: Pump Pressure Gauge Vibration/Oscillation

LUCCA A53 / A53 Mini: Flowmeter Error / Volumetric Dosing problems

LUCCA A53 / A53 Mini: Machine Tripping the GFCI

LUCCA A53 Mini: Draining Steam Boiler With No Drain Nut

LUCCA A53 / A53 Mini: 15 & 20 Amp Power Modes

LUCCA A53 Mini / Mini Vivaldi: Replacing the Pressure Gauge

LUCCA A53/A53 Mini: SSR (Solid State Relay) Replacement

Lucca A53 Mini / Mini Vivaldi: Replace Magnet Float

Lucca A53 Mini: Force-flushing the Group Head

LUCCA A53 Mini / La Spaziale Mini Vivaldi: Fuse Housing Inspection and Replacement

General Troubleshooting

LUCCA A53 Mini: Programming Steam Boiler On/Off

LUCCA A53 / A53 Mini: Programming Volumetric Settings

LUCCA A53 / A53 Mini: Programming Steam Temperature Settings

Programming

LUCCA A53 / A53 Mini: Drying Inside of Temp Probe

LUCCA A53 Mini / Mini Vivaldi: Removing Steam Boiler Fill Valve

LUCCA A53 Mini: Steam Valve Assembly Replacement

Steam Boiler Maintenance/Troubleshooting

LUCCA A53 Mini / Mini Vivaldi: Replacing Coffee Boiler Temperature Probe

LUCCA A53 / Mini / Vivaldi: Testing the Coffee Boiler Temperature Sensor

Brew Boiler Maintenance and Troubleshooting

LUCCA A53 Mini / Mini Vivaldi: Removing the Front Panel

LUCCA A53 / A53 Mini: Installing Wood Panels

LUCCA A53 / A53 Mini / Vivaldi / Mini Vivaldi: Side & Front Panel Alignment

LUCCA A53 / Mini / Vivaldi: Panel Removal

Panel Removal and Installation

LUCCA A53 Mini: Installing Drip Tray Drain

LUCCA A53 Mini: Installing a Pre-Infusion Chamber

Install Upgrades

LUCCA A53 Mini/Mini Vivaldi

LUCCA A53: Draining the Boilers

LUCCA A53 Espresso Machine: Setup Guide

LUCCA A53: User Manual

LUCCA A53: Guide to Error Codes

LUCCA A53 / La Spaziale Vivaldi: Fuse Housing Inspection and Replacement

LUCCA A53 / Vivaldi: Misaligned Pressure Gauge

LUCCA A53 / La Spaziale Vivaldi: Rotary Pump Pressure Adjustment

LUCCA A53 / Vivaldi: Fuse Inspection

LUCCA A53 / Vivaldi: Expansion Valve Adjustment and Seat Replacement

LUCCA A53 / Vivaldi: Accessing Main Computer (CPU)

LUCCA A53 / Vivaldi: 15 & 20 Amp Power Modes

LUCCA A53 / Vivaldi: Replacing Rotary Pump

General Maintenance

LUCCA A53 / Vivaldi: Cleaning the Flow Meter Gicleur

LUCCA A53 / Mini / Vivaldi: Cleaning Hot Water Tap Tubing

LUCCA A53 / Vivaldi: Cleaning Fill Solenoid

LUCCA A53 / Vivaldi: Hot Water Solenoid Disassembly

LUCCA A53 / A53 Mini / Vivaldi / Mini Vivaldi: Cleaning or Replacing Group Head Solenoid (2019-Present)

LUCCA A53 / A53 Mini / Vivaldi / Mini Vivaldi: Inspecting and Cleaning Group Head Passages