La Marzocco Technical Bulletin #41 New Steam

La Marzocco Technical Bulletin #41
New Steam Wand Assembly on GB/5s and FB/80s
Dear La Marzocco Family Member,
Herewith we would like to inform you about the latest modifications on our machines:
1) Beginning with machine SN# 2487, ALL GB/5 and FB/80 models will be equipped with a new steam wand
valve assembly, inclusive of a built-in anti-suction valve. SEE IMAGE BELOW
This feature will avoid the milk suction effect caused by a pressure drop in the boiler occurring after the
frothing phase. The anti-suction valve will automatically divert the milk drops sucked through the wand and
discharge them into the drain box.
Furthermore, the new and particular shape of the steam valve body (A.1.001.01) allows you to grasp it easily
with a wrench in order to unlock the steam wand adaptor (A.1.005) and change the wand effortlessly.
NOTE: The previous code for the old standard steam wand valve was B1.001.
In order to update a machine you need to get the kit # B1.001.X which consists in:
L192
Anti-suction valve
2 units
hose clamp
1 units
A.5.007
T.4.001
Silicon pipe
0,06 kg
B.1.001.01 New shaped steam valve
2 units
A.7.001
'T fitting for anti-suction system
1 units
L339/1
vetrotex Ø6 sheath
0,05 m
L100/D
Copper washer 14X10X1,5
2 units
L292
Tube fitting
1 units
L292/R
Tube fitting
1 units
5.V010
Adhesive fasteners
6 units
F.1.002.01 Drain box GB/5
1 units
The anti-suction drain pipe must be connected to the new part# F.1.002.01 drain box.
For more details please find here enclosed also the new steam valve parts catalogue.
2) Another important feature introduced with machine SN# 2487 is the PT1000 (part# E.1.005)
temperature probe also on the steam boiler, which will definitively substitute the pressure switch (see
drawing here below). This modification will also imply a CPU change which is subsequently updated to
part # E.1.010.01.
PLEASE SEE THE DETAILED PART LIST:
1
2
3
4
5
6
7
8
9
10
11
12
L271
L276
L137/4
L130/2
L100/1A
L190
L180/1
L154/*VGB/5
F.1.004
L180
TL09
TL07/G
14 C.1.036.SX
16 C.1.036.DX
17
18
21
22
23
24
25
26
27
28
31
32
33
34
T.1.060
E.1.005
L140 C
L037/4
L146
L037/2PGR
L037/3
L037/D
L037/3R
F.1.002.01
L129
B.3.001
F.2.019
B.2.013
pressure switch, 56122N
manual reset thermostat 250° (single pole)
blind ferrule, 11mm
nut, tube 1/4"x6mm
copper washer
vacuum breaker
copper washer
*Gr steam boiler
safety valve drain tray
pressure relief valve
tube steam boiler - pressostat
hot water suction tube
bracket for GB/5 coffee boiler - left (from
s/n 547)
bracket for GB/5 coffee boiler - right (from
s/n 547)
vacuum breaker steam boiler tubing
connection
PT1000 temperature probe
expansion valve
copper washer, drain box
expansion valve nut
fitting, drain box hose barb
fitting, 1/4" BSPP to 1/4" BSPP
drain box nut
break drain fitting
drain box (from s/n 2487)
1/4" cross fitting nickel
teflon seal for vacuum breaker
silicon O-ring 102 70SHA
vacuum breaker O-ring shaft
Please do not hesitate to contact me for eventual clarification.
Sincerely yours,
Enrico Wurm
La Marzocco Srl
Via delle Stelline 9
20146 Milano - Italy
T. +39 02 3653 4109
F. +39 02 3653 4460
Email: [email protected]
1
2
3
32b
34b
Portaflon
coating
4
6
5
18
17
33
32a
34a
8
9
10
13
11
14
24
23
22
21
20
12
15
from s/n 2259
to s/n 2486
16
Steam wand assembly
7
25
26
27
28
29
30
31
18
from s/n 2487
24
17
19a
earlier s/n 2258
18
17
19a
19b
12
Lancia - Rubinetto Vapore
19a
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
B.1.001
B.1.001.01
L192
L100/D
A.1.003
H.2.002
F.3.005
A.1.004
H.2.001
F.3.007
F.4.001
A.1.002
H.1.005
A.1.001.01
I.1.015
A.1.006
F.1.006
I.3.003
A.2.008
F.1.007
silicon O-ring 102 70SHA
anti-suction valve shaft
inclined steam valve complete - earlier s/n 2258
inclined steam valve complete - from s/n 2259
anti-suction steam valve
copper washer 14x10x1,5
rear tube connector
PTFE gasket 24x19x2
spring, steam valve shaft
valve seal holder
seat gasket
stainless steel seat
Teflon gasket 12x9,8x1
steam valve shaft
O-ring, steam valve shaft
steam valve body
body valve screw
mounting nut, steam valve
steam valve knob
grub screw
brass nut M6
knob cover with logo
O-ring 102 silicone 70SHA
asta per valvola antirisucchio
rubinetto vapore inclinato completo - fino a s/n 2258
rubinetto vapore inclinato completo - da s/n 2259
valvola antirisucchio per rubinetto vapore
rondella rame 14x10x1,5
raccordo ingr. rub vap. GB/5
guarniz. PTFE 24x19x2
molla per tenuta
racc. per guarn. tenuta
guarniz. tenuta rub. vap. GB/5
sede AISI 316 per rub. GB/5
guarnizione Teflon 12x9,8x1
asta Ø8 per rub. vap.
O-ring Viton per asta rub. vap.
corpo rub. vap. GB/5
vite M6 fermo manopola
dado 1/2" ES.24 H6
manopola rub. vap. GB/5
grano M6x16 brunito
dado ot. M6 CH9x4,5
tappo manop. vap. GB/5
Steam wand assembly
19b
F.2.019
tenuta in Teflon per valvola antirisucchio
B.2.013
Teflon seal for anti-suction valve
Descrizione
20
B.3.001
Part Number/Codice
Description
21
22
Item
13
Lancia - Rubinetto Vapore
24
23
L260/1A
B.1.001.T
B.1.001.TR
copper washer 27x21x1,5
1/8" cap for anti-suction steam valve
washer for anti-suction steam valve cap
rondella rame 27x21x1,5
tappo 1/8" rub. vapore c/antirisucchio
rondella x tappo rub. vapore c/antirisucchio
Steam wand wssembly
25
molla per tubo vap. GB/5
O-ring 3043 10,77x2,62 85 SH
steam wand sealing spring
O-ring, steam wand
guarn. PTFE per snodo tubo vap.
F.3.004
steam wand sealing
O-ring 2,62x13,1 Viton per tubo vap.
26
H.1.004
O-ring 117 2,62x13,1 Viton 85 SH
tubo vapore per GB/5
racc. 1/2" per tubo vap GB/5
H.2.003
steam wand for GB/5
tubo vapore per GB/5 rivestito in Portaflon
rondella ottone 14x7x0,5
29
H.1.003
steam wand for GB/5 with Portaflon coating
spruzzatore inox x tubo vapore
gommino antiscottat. tubo vap.
steam wand adaptor
30
T.2.001
rubber steam tube cover
brass washer 14x7x0,5
31
T.2.001.TF
S/S steam wand tip
A.1.005
32a
L171/G
I.4.001
32b
L173
27
33
28
34a
Descrizione
spruzzatore inox x tubo vapore rivestito in Portaflon
Portaflon-coated steam wand tip
Description
L173TF
Part Number/Codice
34b
Item
14
7
8
9
4
10
3
2
Anti-suction steam valve kit
5
11
13
6
1
12
4
15
Kit antirisucchio - Rubinetto vapore
11
10
9
8
7
6
5
4
3
2
1
L339/1
L338/L100
F.1.002.01
L292/R
L292
A.7.001
A.5.007
5.V010
T.4.001
L100/D
L192
B.1.001.01
vetrotex Ø6 sheath
plastic fastener 100x2,5
drain box
lock nut 1/8"
tube fitting
T fitting for anti-suction system
hose clamp
adhesive fastners
silicon tube for anti-suction valve - specify how long
copper washer 14x10x1,5
anti-suction steam valve
inclined steam valve complete - from s/n 2259
guaina vetrotex Ø6
fascetta fermafilo 100x2,5
pozzetto di scarico
raccordo portagomma 1/8"
portagomma
raccordo a T x antirisucchio
fascetta 8-12 banda 8 vite zincata
incollini
tubo silicone valvola antirisucchio - specificare lunghezza
rondella rame 14x10x1,5
valvola antirisucchio per rubinetto vapore
rubinetto vapore inclinato completo - da s/n 2259
Anti-suction steam valve kit
12
kit antirisucchio per rubinetti vapore completo
Descrizione
anti-suction steam valve complete kit
Description
B.1.001.X
Part Number/Codice
13
Item
16