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MAINTENANCE MANUAL
Mirage technical manual
page 22 of 65
Figure M 9a (left). Upper banjo sawn in half with fixed restrictor. An extra fixed aperture restrictor
(aperture diameter 1.5 mm) is shown.
Figure M 9b (right). Upper banjo sawn in half with adjustable restrictor model as installed from
November 2011. Older models have different restrictor-needles (sharper point and/or shorter knob
stem) and may carry a fixed restrictor as shown on the left but with larger aperture diameter.
Materials needed
Allen key 3 mm
Spanner 17 mm, 19 mm, 30 mm (adjustable)
Needle nose pliers (straight)
Teflon O-ring on banjo cap (only for fixed aperture restrictor)
Fixed aperture restrictor of wanted diameter
Filter holder with temperature sensor
Procedure
1. Remove the cup-holder cover plate.
2. Remove the cup-holder drip tray with a 3 mm Allen wrench.
3. Use 30 mm spanner to make sure that upper banjo is tightened.
4. Fixed restrictor:
a. Relieve pressure from heat exchangers:
i. Turn mains
switch to “1”.
ii. Close water supply and disconnect electrics from pump motor.
iii.
Activate all groups (upper button touchpad) until LED’s on touchpad start flashing,
then de-activate all groups.
iv. Turn mains
switch to “0”.
b. Remove the banjo cap with a 17 mm spanner (retain banjo with 30 mm spanner when
necessary).
c. Use a 3 mm Allen wrench to remove the restrictor from the upper banjo. You may need
needle nose pliers to pick the restrictor out of the banjo.
d. Replace with new restrictor.
e. Replace banjo cap with new Teflon O-ring.
f.
Open water mains and reconnect pump motor.
g. Turn mains switch
to “2”.
5. Adjustable restrictor:
a. Use 19 mm spanner to make sure that housing of the adjustable restrictor is tight but do
not over-tighten.
b. Turn the knob clockwise or anti-clockwise to decrease resp. increase brew.
6. Replace cup-holder drip tray, do not mount bolts yet.
banjo cap
banjo fitting