Pfaff 234 Manuale utente

R5315

PFAFF234

High-Speed

Sewing

Machine

INSTRUCTION

BOOK

i-n

R5090

Fis.20

/. Hold the bolonce wheel in this position ond turn lhe hook on its shoft

until its point is opposite the center line of rhe needle.

Slightly tighten

whicheveÍhook sel screwcon be reochedmosl eosily.

L Check whether the hook point is obout 3ir." (1.2 mm) obove ihe rop

of the needleeye. If odiusimentis required,

loosenset screwc (Fig,l9)

ond setfhe needle

bor ot ihe correctheight.

9. Checkwhether lhere is o cleoronceof .004"(0.1

point ond lhe needle.Moke sure thot the hook mm) belween lhe hook

point will never choíe

ogoinstlhe needle.

10.Tighleo boih hook sel scíews

pres5er

Íoot. sêcurely

ond reploce needle plole ond

To focilitote setting the needle bor ot the coírect height, o smoll depres-

sion obout t/e." wide hos been milled into the bor. When the needle bor

hos reochedthe lowest point of its siroke,the top of this mork shoulo oe

Ílush with the boitom edge of the lower needle bor bushing.The width of

lhis mork coincides with ihe omount of needle rise reouired lo Íorm

the loop. In other words, when the needle bor hos risen obout 5/r." Írom

the lowesl point of its ltrole, the hook point shouldbe oppositelhe centeí

line of the needle.

This lost odjustment

pÍocedure,

however,is not prêcise

enough.

InslruclionsÍor Mechanics

17,

TheV-Beh

Drive

When mounling the V.beli for the first time, core should be token thof il

rs nol forced on the motoí pulleybecouse

o crookedlymouniedbelt weors

out ouicklv.

Íhe vorious moto.s used lo drive ihe PioÍ.23.i cre siondord molors con.

lorming to Germon DIN 42ó91

speciíico'ons.ïhey ore pivotolly connected

wilh lhe motor brockei by meonsoÍ c h n_qe

s:ud ond. oíier loosening

sel screw

or nul, con be swungto ony des ea cos

i on to focilitotemounr.

ing lhe bell on lhe mochine ond moto- c- ers See io:or picr.rrec n

Fio.I7l

Fig l7

Thetension

muslnoi be set

ioo tight os thrs

would couseexcessrvepressure

on lhe orm shoft beorings

ond might resultin overheotingond seizing

oÍ

lhe mochine.

The bell is lens

oned corrccllyií you con cornpfess

il obout i! oÍ on inch

midwoy belweenboth pulleys.

Tightenthe h nge siud nul (or set screwk on moiors Fig. l7) securely

so lhol il will no; loosen

while sewing.

Fig.6

R4345

8. Choosingthe Proper

Needle

The Píoff 234usesthe Íollowing round-shonk,

round-poinineedles:

Model A System134nêedtes

Model B - Systeml3J needtes

Model C Sysïêm

134

needles

Necdle ond lhreod Chort

Needle

Size Corlon sitk Synthetic Lrnen

't00

140

120r3

100/3

80/3

70/3

60/3

70t3

60/3

50/3

t303

130i,1

00.,3

100,I

80/3

80'4

70/3

-ó0i3

70t4-ó0,'4

50t3

- 40/3

5A/4

- 40/4

3Cr/3

30/4

30ió

200i

3 I50/3

140'3- r

I20/3- 100

r00/3- 80,'3

70/3

ó0l3

Oil seolerscrew

2 (Fig.

l) on the top covoíhostwo oilwicks

qttoched

it whió providê

for on odditionol

lubricotion

of the feed eccentric

ono,

therefore,

shouldbe sooked

with oil thoroughly.

Both

theverticol

shofrrop

beoring

ond the upperbevel

georossembly

conb6 oiledqÍtertqking

out

cop screw

3 (Fig,

1).Theneedle

bor is lubricotedby meons

oÍ on oilwick

which

leods

downÍrom the tqke-upguordond is jookedwith sproyoil.

Formlhe.

hobii oÍ pufting

o drop oÍ oil into the hook rocewoy

severol

lrmes

o cloy.

Cerloin.sewing

.lroubles,

suchos lhreod breoking

ond stitó skipping,

connolbe remediedby opplyingexcessive

quonlities

of oil. Excessoil qno

linttend

lo formo pocked

moss

which,in time,

will couse

hordrunning

oÍ

ihe moóineond soiling

of thework.

Mokr it o rulc, thereÍore,

to qpply oil rporinglybut regulorly.

AlwoysusePfofÍ

sewingmochine

oil No.28GllmI22 whió is completely

non-resinous.

Although

thebevelgeors

ore

enclosed

incoses

ondrequire

nospeciol

moin-

lenonce,il is recommended

to replocetheold greose

by Pfoff

greose

No.

2&-l-12O

213once

o yeor.

Owingfo the

speciol

Ébricoting

propeities

of this

greose,

theflonks

of thebevel

geor

teeih

shouldbegreoled

onlylightly.

From

lime to iime,unscrewthe needle

ploteond remove

lhe lint which

hos

occumuloted

on theÍeeddog ond in theviciniryoÍ the sewinghook.

Thisir veryimpo.tont

becousethislintcontoinssmoilporticles

of dressing

which

couse

excessiveweorof the sewingmeóonism.

On moclrines

which

oÍe in opeÍolionconstontly,

thelini musl

be removed

everydoy.

5, lemoving the Bobbin Cose

Roisethetoke-up

leverto its

highest

position

ond

openthebedslide.Reocn

underlhe toblewiih your left hondond openthe bobbin

cole loíchwith

thenoilof yourthumb.Pull

outthebobbin

cose

by holdingrhelotchwith

thumb

ondÍoreÍinger,

osshownin Fig.4.While

you holdthebobbin

cose

by its

openlotch,thebobbinconnotfoll out.

6. Winding

rheBobbin

Bobbins

ore woundwilh lhe power-driven

bobbin

winder(Fig.5),which

requires

no lub.icotion

sinceitsspindleruns

in q sinleredsteel

bushing.

A bofÍle

plote

mounled

on the

winder

bose

prevents

thelhreodfromberng

pulled

lowordthedriving

beltby ihe droÍt of oi. cqusedby the belr.Thé

V-groovein therim

of lhewinderpulley

hosonobtuse-ongled

profile

which

permih

lhe use

of bothroundond V-belts.

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