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PFAFF234 - Gerrijts
PFAFF234 - Gerrijts
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R 5315<br />
i-n I<br />
<strong>PFAFF</strong> 234<br />
High-Speed Sewing Machine<br />
INSTRUCTION BOOK
Fis.20<br />
R 5090<br />
/. Hold the bolonce wheel in this position ond turn lhe hook on its shoft<br />
until its point is opposite the center line of rhe needle. Slightly tighten<br />
whicheveÍ hook sel screw con be reoched mosl eosily.<br />
L Check whether the hook point is obout 3ir." (1.2 mm) obove ihe rop<br />
of the needle eye. If odiusiment is required, loosen set screw c (Fig, l9)<br />
ond set fhe needle bor ot ihe correct height.<br />
9. Check whether lhere is o cleoronce of .004" (0.1mm) belween lhe hook<br />
point ond lhe needle. Moke sure thot the hook point will never choíe<br />
ogoinst lhe needle.<br />
10. Tighleo boih hook sel scíews<br />
pres5er Íoot.<br />
sêcurely ond reploce needle plole ond<br />
To focilitote setting the needle bor ot the coírect height, o smoll depression<br />
obout t/e." wide hos been milled into the bor. When the needle bor<br />
hos reoched the lowest point of its siroke, the top of this mork shoulo oe<br />
Ílush with the boitom edge of the lower needle bor bushing. The width of<br />
lhis mork coincides with ihe omount of needle rise reouired lo Íorm<br />
the loop. In other words, when the needle bor hos risen obout 5/r." Írom<br />
the lowesl point of its ltrole, the hook point should be opposite lhe centeí<br />
line of the needle.<br />
This lost odjustment pÍocedure, however, is not prêcise enough.
Inslruclions Íor Mechanics<br />
17, The V-Beh Drive<br />
When mounling the V.beli for the first time, core should be token thof il<br />
rs nol forced on the motoí pulley becouse o crookedly mounied belt weors<br />
out ouicklv.<br />
Íhe vorious moto.s used lo drive ihe PioÍ.23.i cre siondord molors con.<br />
lorming to Germon DIN 42ó91 speciíico'ons. ïhey ore pivotolly connected<br />
wilh lhe motor brockei by meons oÍ c h n_qe s:ud ond. oíier loosening o<br />
sel screw or nul, con be swung to ony des ea cos i on to focilitote mounr.<br />
ing lhe bell on lhe mochine ond moto- c- ers See io:or picr.rrec n<br />
Fio. I7l<br />
Fig l7<br />
The tension musl noi be set ioo tight os thrs would couse excessrve pressure<br />
on lhe orm shoft beorings ond might result in overheoting ond seizing oÍ<br />
lhe mochine.<br />
The bell is lens oned corrcclly ií you con cornpfess il obout i! oÍ on inch<br />
midwoy belween both pulleys.<br />
Tighten the h nge siud nul (or set screw k on moiors<br />
so lhol il will no; loosen while sewing.<br />
Fig. l7) securely<br />
18
Fig.6<br />
R 4345<br />
8. Choosing the Proper Needle<br />
The Píoff 234 uses the Íollowing round-shonk, round-poini needles:<br />
Model A System 134 nêedtes<br />
Model B - System l3J needtes<br />
Model C Sysïêm 134 needles<br />
Necdle ond lhreod Chort<br />
Needle Size Corlon s itk Synthetic Lrnen<br />
6l<br />
t30 3<br />
130i,1<br />
1403<br />
200i 3 I50/3<br />
:l<br />
r 00.,3<br />
100,I<br />
120r3<br />
140'3 - r 2c 3<br />
BO<br />
80/3<br />
80'4<br />
100/3<br />
I 20/3 - 1003<br />
90<br />
70/3 -ó0i3<br />
70t4-ó0,'4<br />
80/3<br />
r00/3- 80,'3<br />
70t3<br />
't00<br />
50t3 - 40/3<br />
5A/4 - 40/4<br />
70/3<br />
70/3<br />
60/3<br />
0<br />
3Cr/3<br />
30/4<br />
30ió<br />
60/3<br />
ó0l3<br />
50/3
Oil seoler screw 2 (Fig. l) on the top covoí hos two oilwicks qttoched fo<br />
it whió providê for on odditionol lubricotion of the feed eccentric ono,<br />
therefore, should be sooked with oil thoroughly. Both the verticol shofr rop<br />
beoring ond the upper bevel geor ossembly con b6 oiled qÍter tqking out<br />
cop screw 3 (Fig, 1). The needle bor is lubricoted by meons oÍ on oilwick<br />
which leods down Írom the tqke-up guord ond is jooked with sproy oil.<br />
Form lhe. hobii oÍ pufting o drop oÍ oil into the hook rocewoy severol<br />
lrmes o cloy.<br />
Cerloin. sewing .lroubles, such os lhreod breoking ond stitó skipping,<br />
connol be remedied by opplying excessive quonlities of oil. Excess oil qno<br />
lint tend lo form o pocked moss which, in time, will couse hord running oÍ<br />
ihe moóine ond soiling of the work.<br />
Mokr it o rulc, thereÍore, to qpply oil rporingly but regulorly.<br />
Alwoys use PfofÍ sewing mochine oil No.28GllmI22<br />
non-resinous.<br />
whió is completely<br />
Although the bevel geors ore enclosed in coses ond require no speciol moinlenonce,<br />
il is recommended to reploce the old greose by Pfoff greose No.<br />
2&-l-12O 213 once o yeor. Owing fo the speciol Ébricoting propeities of this<br />
greose, the flonks of the bevel geor teeih should be greoled only lightly.<br />
From lime to iime, unscrew the needle plote ond remove lhe lint which<br />
hos occumuloted on the Íeed dog ond in the viciniry oÍ the sewing hook.<br />
This ir very impo.tont becouse this lint contoins smoil porticles of dressing<br />
which couse excessive weor of the sewing meóonism. On moclrines which<br />
oÍe in opeÍolion constontly, the lini musl be removed every doy.<br />
5, lemoving the Bobbin Cose<br />
Roise the toke-up lever to its highest position ond open the bed slide. Reocn<br />
under lhe toble wiih your left hond ond open the bobbin cole loích with<br />
the noil of your thumb. Pull out the bobbin cose by holding rhe lotch with<br />
thumb ond ÍoreÍinger, os shown in Fig.4. While you hold the bobbin cose<br />
by its open lotch, the bobbin connot foll out.<br />
6. Winding rhe Bobbin<br />
Bobbins ore wound wilh lhe power-driven bobbin winder (Fig.5), which<br />
requires no lub.icotion since its spindle runs in q sinlered steel bushing.<br />
A bofÍle plote mounled on the winder bose prevents the lhreod from berng<br />
pulled loword the driving belt by ihe droÍt of oi. cqused by the belr. Thé<br />
V-groove in the rim of lhe winder pulley hos on obtuse-ongled profile which<br />
permih lhe use of both round ond V-belts.