SLAYER ESPRESSO V3 USER MANUAL V5.1 | AUGUST, 2022
24
ADJUST FLOW RATES
Flow rate is controlled by a precision needle valve, which is located inside
of the machine on top of the brew tank. Adjust the flow rate with the
following steps.
PARTS AND TOOLS:
• Empty 8-ounce vessel
• Gram scale
• Timer
PROCEDURE:
1.
Ensure that Slayer is fully heated.
2.
Remove portafilters from all groupheads and set aside.
3.
Begin with one grouphead: briefly move the brew actuator to the
“pre-brew” position, then to the “full brew” position for a few seconds
before returning the grouphead to the “off” position.
4.
Beneath the same grouphead, place a container on a scale and tare
the scale to zero.
5.
Simultaneously move the brew actuator to the “pre-brew” position
and start a timer.
6.
When the timer reaches 30 seconds, remove the container and scale,
then move the brew actuator to the “off” position.
7.
Weigh the container again without taring the scale to determine how
much water dispersed in the allotted time.
8.
Use this weight to determine flow rate, which is expressed in these
terms: x grams of water per 30 seconds.
• Slayer recommends starting with a flow rate of 40-60 grams of
water per 30 seconds. The actual flow rate may be within a range
of +/- 2 grams of the desired flow rate.
• To decrease the flow rate, turn the blue control knob on the needle
valve clockwise.
• To increase the flow rate, turn the blue control knob on the needle
valve counter-clockwise.
9.
Repeat all steps for each grouphead.
IMPORTANT:
Over-tightening the valve may break the needle inside. Only
adjust the flow rate incrementally to avoid damage.
