Barista Technology PUQpress Mode d'emploi

Maintenance & repair manual

Puqpress -

Precision coffee tamper

VERSION 2.0.4

DATE: 14-12-2016

TABLE OF CONTENTS

1Introduction.......................................................................................................... 3

1.1 Warranty........................................................................................................ 3

1.2 Model types................................................................................................... 3

1.3 Revision status.............................................................................................. 3

2Operating faults.................................................................................................... 4

3Replacement of various components................................................................... 5

3.1 Replace drive unit.......................................................................................... 5

3.2 Replace induction sensor.............................................................................. 9

3.3 Clean tamper base (daily cleaning)............................................................. 12

3.4 Remove tamper base and clean cavity (weekly cleaning)........................... 13

3.5 Adjust lower clamp ...................................................................................... 15

3.6 Adjust tamping force.................................................................................... 17

4Changing tamper base....................................................................................... 18

4.1 Upper clamp types....................................................................................... 18

4.2 Determine upper clamp type ....................................................................... 18

4.3 Espresso machine brand and tamper diameter........................................... 19

5Exploded view: Total assembly.......................................................................... 19

6Order spare parts............................................................................................... 20

6.1 Order procedure.......................................................................................... 20

6.2 Recommended spare parts......................................................................... 20

6.3 Part list (all parts)......................................................................................... 21

1 INTRODUCTION

In this document the repair and maintenance of the Puqpress precision coffee tamper

is described. The unit is maintenance free and only has to be cleaned daily. However

due to extensive use various components wear and can break. The sequence of

replacing components is described in detail. The first step is to find the cause of the

problem. Various possible defects are listed in section 2. If the defect is not listed in

section 2, please contact us via service@puqpress.com.

All repairs should be executed by mastered people with knowledge of electrical and

mechanical components.

1.1 Warranty

As agreed by the Exclusive distribution agreement, section 6.7, the warranty period of

the product is 12 month and/or 100.000 tamping cycles (whichever first occurs).

Repairs after this period are not covered by the supplier.

The most common failure mode is the drive unit.After many cycles the drive unit wears

and can break. Replacement of drive unit can be found in section 3.1.

1.2 Model types

Many different models are available. The main difference is the tamper base diameter,

upper clamp type and power cable. All important components are similar for every

model type.

1.3 Revision status

Revision 2.0.1: Initial issue

Revision 2.0.2: Errors updated

Revision 2.0.3: Assembly sequence updated.

2 OPERATING FAULTS

DEFECT CAUSE REMEDY SECTION

Tamper disk does

not move, unit is ON

and display is

working

Fault in drive unit Replace drive unit 3.1

Fault in induction

sensor Replace induction

sensor. 3.2

Tamped surface is

not even Tamper base is dirty Clean tamper base 3.3

Cavity upper clamp

is dirty Remove tamper base

and clean cavity 3.4

Tamping is not level

Lower clamp not

correctly set and

portafilter can rotate

Adjust lower clamp 3.5

Tamping force is too

low Force setting too low Adjust tamping force on

display 3.6

Fault in drive unit Clean drive unit 3.1

Fault in drive unit Replace drive unit 3.1

Tamper diameter

not correct

Change to other

tamper base

diameter

Change tamper base 4.1

Change from 58mm

base to 53mm or

53mm to 58mm

Change tamper base

AND upper clamp type 4.2

Components are

missing Various

Find missing

component in exploded

view or part list and

order spare parts

5 / 6.3

3 REPLACEMENT OF VARIOUS COMPONENTS

3.1 Replace drive unit

Step

Description

Switch the device ON and activate the CLEAN mode. Tamper

base goes down. Switch OFF and remove power cable.

Remove main housing – top cover

Remove the hexagon bolt M5x100 + spring washer M5 using the

Allen key 4mm.

Remove the tamper base.

NOTE: Tamper base has left-hand screw thread!

Remove the main housing – middle cover which is mounted to the

main body with 3 cross head cap screws M4x10

Unscrew 2 screws as is shown in the figure below.

Open the main housing – back cover.

NOTE: the push buttons (red) are fragile

so be careful when opening back cover.

Disconnect the earthing cable from

the DC worm gear motor.

Unscrew 2 hexagon head cap screws M5x25.

Disconnect the connectors as are shown in the figures below.

Remove the drive unit and replace the drive unit with a new unit.

Mount the upper clamp to the main body with 2 hexagon head cap

screws M5x25.

Apply Permabond A1042

on screw threads.

Connect both connectors, see step 9.

Fasten the earthing cable to the DC motor, see step 8.

Mount the main housing – back cover, see step 5.

Mount the main housing – middle cover, see step 4.

Mount the tamper base, see step 3.

Mount the main housing – top cover, step 2.

Check functioning of new drive unit

3.2 Replace induction sensor

Step

Description

Remove main housing – top cover

Remove the main housing – middle cover which is mounted to the

main body with 3 cross head cap screws M4x10

Unscrew 2 screws as is shown in

the figure below.

Open the main housing – back cover.

NOTE: the push buttons (red) are fragile

so be careful when opening back cover.

The sensor is fixed with a set screw M5. Unscrew the set screw

using Allen key 2.5mm via the

hole as shown below. The drive

units doesn’t need to be removed.

Remove the induction sensor and

disconnect the connector.

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