How To Unclog Teardown An Ambiano Cm 202 Repair Guide

Difficulty

Moderate

Steps

Time Required

                          30 - 45 minutes

Sections

How to unclog/teardown an Ambiano CM-202
14 steps

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Introduction

What you need

Step 1

              How to unclog/teardown an Ambiano CM-202

First, unplug the unit and dump out all the water. Find a hospitable teardown area, and suitable storage for screws and parts.

First, unplug the unit and dump out all the water. Find a hospitable teardown area, and suitable storage for screws and parts.

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Step 2

              Take off the top cover

Remove the two screws that hold the back end of the top cover. Unsnap the front of the cover with a spudger or screwdriver. Note the two underneath which help hold the back shell on.

Remove the two screws that hold the back end of the top cover. Unsnap the front of the cover with a spudger or screwdriver. Note the two underneath which help hold the back shell on.

Step 3

              Remove the pipe from dispenser head

In the center you see the dispenser that punctures your K cup, The output pipe comes into the end of this from the heater (removed here). Reach in with pliers and squeeze the hose clamp ends to release it, and slide it down so you can pull the hose off the hose barb on the head. The switch on the bottom right closes when the lever is down.

In the center you see the dispenser that punctures your K cup, The output pipe comes into the end of this from the heater (removed here). Reach in with pliers and squeeze the hose clamp ends to release it, and slide it down so you can pull the hose off the hose barb on the head. The switch on the bottom right closes when the lever is down.

Step 4

              Attempt to clear the clog

The top end of this pipe is right at the dispenser head right angle bend. Clogs are likely here. If you are very lucky, you can get them out from the head end without tearing apart the rest of the unit. Plug it in and expansion of the hot water may pump it out. You can slip a hose over it or just dump it into the bottom of the dispenser head.
If this works, just reattach the hose and put the cover and 2 screws back in, and you’ve earned a cup of coffee. If you are unsuccessful, continue with disassembly. The bracket with the two holes doesn’t attach to anything.

The top end of this pipe is right at the dispenser head right angle bend. Clogs are likely here. If you are very lucky, you can get them out from the head end without tearing apart the rest of the unit. Plug it in and expansion of the hot water may pump it out. You can slip a hose over it or just dump it into the bottom of the dispenser head.

If this works, just reattach the hose and put the cover and 2 screws back in, and you’ve earned a cup of coffee. If you are unsuccessful, continue with disassembly. The bracket with the two holes doesn’t attach to anything.

Step 5

              Take off the bottom plate

Remove the 7 screws on the bottom metal plate.

Remove the 7 screws on the bottom metal plate.

Step 6

              Pump maintenance

Working on the pump or internal pipes is impossible without removing the back shell, as seen here.

Working on the pump or internal pipes is impossible without removing the back shell, as seen here.

Step 7

              Detach back shell

Remove the 5 screws (shown loose here) that attach the outside shell to the bottom. Remove the two at the top which were under the top cover.

Remove the 5 screws (shown loose here) that attach the outside shell to the bottom. Remove the two at the top which were under the top cover.

Step 8

              Pull back shell off

Use a spudger or screwdriver to pry the back shell off of the front. the back shell presses inward at the catches to release them.

Use a spudger or screwdriver to pry the back shell off of the front. the back shell presses inward at the catches to release them.

Step 9

              Check for contaminants

Check all the piping for clogs or contaminants. Release the hose clamps and pull the pipes off if needed.

Check all the piping for clogs or contaminants. Release the hose clamps and pull the pipes off if needed.

Step 10

              Clean inlet pipe

Clean out the inlet pipe adapter if needed, by releasing the clamp. This item serves no apparent purpose, but could clog up, rendering the device inoperative. Perhaps it is a Planned Obsolescence Filter.

Clean out the inlet pipe adapter if needed, by releasing the clamp. This item serves no apparent purpose, but could clog up, rendering the device inoperative. Perhaps it is a Planned Obsolescence Filter.

Step 11

              Output pipe and thermostat

the wires at top are the thermostat for the heater. The bottom, black/white wires are a thermal overload which blows if the heater gets way too hot. This is a common failure item and are replaceable. Be sure the thermostat works first. The spring in the output pipe keeps the pipe from kinking, and just falls out if you remove the pipe.

the wires at top are the thermostat for the heater. The bottom, black/white wires are a thermal overload which blows if the heater gets way too hot. This is a common failure item and are replaceable. Be sure the thermostat works first. The spring in the output pipe keeps the pipe from kinking, and just falls out if you remove the pipe.

Step 12

              Clean out the reservoir filter

This filters out stray coffee grounds and other large debris. Unscrew the two screws and clean it out if necessary. You can also just clean it with a small brush without removing it, the dirt will be on the outside. Rinse out the debris and dump it.

This filters out stray coffee grounds and other large debris. Unscrew the two screws and clean it out if necessary. You can also just clean it with a small brush without removing it, the dirt will be on the outside. Rinse out the debris and dump it.

Step 13

              Control board

There are two timers which simply adjust the pump time for different volumes of coffee. If flow is restricted, volume delivered will be greatly reduced. There are no other complicated level sensors like other coffeemakers.

There are two timers which simply adjust the pump time for different volumes of coffee. If flow is restricted, volume delivered will be greatly reduced. There are no other complicated level sensors like other coffeemakers.

Step 14

              Reassemble

Reassembly is a backwards disassemble. It’s easiest to attach the inlet pipe to the pump as shown here, then reattach the top of the pipe up to the reservoir.

Reassembly is a backwards disassemble. It’s easiest to attach the inlet pipe to the pump as shown here, then reattach the top of the pipe up to the reservoir.

To reassemble your device, follow these instructions in reverse order.

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                    James Van Damme

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Introduction

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