Sterling STT 160, STT 110 User Manual 2

Op er ating In struc tions

De hu mid ified air dryer
STT 110
STT 160

506-2MS

Ster ling Ma te rial Pro cess ing

Please note that our address and phone information has changed.
Please reference this page for updated contact information.

These manuals are obsolete and are provided only for their technical information, data and capacities.
Portions of these manuals detailing procedures or precautions in the operation, inspection, maintenance
and repair of the products may be inadequate, inaccurate, and/or incomplete and shouldn’t be relied
upon. Please contact the ACS Group for more current information about these manuals and their
warnings and precautions.

Parts and Service Department

The ACS Customer Service Group will provide your company with genuine OEM quality parts manufactured to engineering
design specifications, which will maximize your equipment’s performance and efficiency. To assist in expediting your phone
or fax order, please have the model and serial number of your unit when you contact us. A customer replacement parts list
is included in this manual for your convenience. ACS welcomes inquiries on all your parts needs and is dedicated to
providing excellent customer service.

For immediate assistance, please contact:

• North, Central and South America, 8am – 5pm CST [phone] for drying, conveying, heating and cooling
and automation. For size reduction: [phone].
North America, emergencies after 5pm CST [phone]

North America email: [e-mail]

• Mexico, Central & South America
Email: [e-mail]

• Europe, Middle East & Africa [phone]

Email: [e-mail]

• India [phone]

Email: [e-mail]

• Asia/Australia [phone]

Email: [e-mail]

Sales and Contracting Department

Our products are sold by a worldwide network of independent sales representatives. Contact our Sales Department for the
name of the sales representative nearest you.

Let us install your system. The Contract Department offers any or all of these services: project planning; system packages
including drawings; equipment, labor, and construction materials; and union or non-union installations.

For assistance with your sales or system contracting needs please Call:

North, Central and South America [phone] or [phone] Monday–Friday, 8am–5pm CST

Europe/Middle East/Africa [phone]
India [phone]
Asia/Australia [phone]

Facilities:

ACS offers facilities around the world to service you no matter where you are located. For more information, please visit us at
www.acscorporate.com

United States:

ACS Schaumburg – Corporate Offices

1100 E. Woodfield Road
Suite 588
Schaumburg, IL 60173
Phone: + 1 847 273 7700
Fax: + 1 847 273 7804

ACS New Berlin – Manufacturing Facility

2900 S. 160th Street
New Berlin, WI 53151
Phone : [phone]
Fax: + 1 262 641 8653

Asia/Australia:

ACS Suzhou

109 Xingpu Road SIP
Suzhou, China 215126
Phone: + 86 8717 1919
Fax: [phone]

Europe/Middle East/Africa:

ACS Warsaw

Ul. Działkowa 115
02-234 Warszawa
Phone: + 48 22 390 9720
Fax: [phone]

India

ACS India

Gat No. 191/1, Sandbhor Complex
Mhalunge, Chakan, Tal Khed,
Dist. Pune 410501, India
Phone: [phone]
Fax: + 91 20 40147576

Ster ling Ma te rial Pro cess ing

5200 West Clinton Ave.

Mil wau kee, WI 53223

Tele phone: [phone]

Fax: [phone]

www.sterlco.com

Tech ni cal ser vi ce:

Ser vi ce de part ment
Tele phone: [phone]

Edi ti on: 04/02

STT 110 / STT 160

The se ope ra ting in struc tions are for*:

(* Please fill in per son ally)

Se ri al num ber:

Year of ma nu fac tu re:

Date of de li very:

Num ber of de li very:

Date of com mis sio ning:

Lo ca ti on:

506-2MS

Group of ma chi nes:

2

STT 110 / STT 160

Ster ling Ma te rial Pro cess ing re tains all rights to chan ge the in for ma ti on in the se
ope ra ting in struc tions at any time wit hout no ti ce.

We as su me no lia bi li ty for any er rors or di rect or in di rect da ma ge re sul ting in con ­text with the se ope ra ting in struc tions.

Co py ing, trans la ti on or pub li ca ti on in any form ex cept for per so nal use of pur cha -

506-2MS

ser re qui res ap pro val from Ster ling Ma te rial Pro cess ing.

All rights re ser ved.

3

STT 110 / STT 160

Ta ble of con tents

1. Gen eral In for ma tion .......................................................1-1

1.1. Warn ings and sym bols.............................................1-2

1.2. Ex pla na tions and in for ma tion .......................................1-4

1.3. Le gal ba sis ......................................................1-4

1.4. Fields of ap pli ca tions ..............................................1-4

1.5. Notes on Us age ..................................................1-4

2. Safety in struc tions ........................................................2-1

2.1. For your safety ...................................................2-2

2.2. For the safety of the de vices ........................................2-5

3. Start up ..................................................................3-1

3.1. Ini tial Op er a tion ..................................................3-2

3.1.1. Switch ing on the Dryer ......................................3-2

3.2. Con tin u ous Op er a tion .............................................3-4

3.2.1. Switch ing the Dryer on ......................................3-4

3.2.2. Set ting the Dry ing Tem per a ture ...............................3-5

3.3. Switch ing the Dryer off .............................................3-7

4. Er ror and er ror cor rec tion ..................................................4-1

5. Main te nance ..............................................................5-1

5.1. Main te nance sched ule .............................................5-3

5.2. Clean ing or Re plac ing the Air Fil ter ..................................5-4

5.2.1. Clean ing or Re plac ing the Re turn Air Fil ter .....................5-5

5.3. Dis pos ing of Dry ing Agents .........................................5-6

5.3.1. .........................................................5-6

5.3.2. .........................................................5-6

5.3.3. .........................................................5-6

5.3.4. .........................................................5-6

5.3.5. .........................................................5-6

5.3.6. .........................................................5-6

5.3.7. .........................................................5-6

5.3.8. .........................................................5-6

5.3.9. .........................................................5-6

506-2MS

6. Func tional de scrip tion .....................................................6-1

5.4. Clean ing the Dry ing Hop per ........................................5-7

4

STT 110 / STT 160

6.1. Gen eral In for ma tion ...............................................6-2

6.2. Dry ing Hop per (Op tional) ...........................................6-5

6.2.1. Hop per Heater .............................................6-6

6.3. Con nec tion to a Pneu matic Con vey ing Sys tem (Op tional) ................6-7

6.4. Re turn Air Cooler (Op tional) ........................................6-7

7. Trans port, As sem bly and Stor age ...........................................7-1

7.1. Tansport and Pack ing .............................................7-2

7.2. As sem bly........................................................7-3

7.3. Stor age .........................................................7-3

8. As sem bly in struc tions .....................................................8-1

8.1. In stal la tion of the exhauster fan for re gen er a tion of ex haust air............8-2

8.2. Ground ing the equip ment against elec tro static charg ing .................8-2

8.3. Elec tri cal Con nec tion ..............................................8-3

8.4. Con nec tion of Re turn Air Cooler (Op tional) ............................8-4

9. Tech ni cal Data ............................................................9-1

9.1. STT 110.........................................................9-1

9.2. STT 160.........................................................9-2

9.3. Di men sion Sheet .................................................9-3

10. Spare parts list .........................................................10-1

11. Elec tri cal man ual........................................................11-1

o Con nec tion di a gram no.: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

o Cur rently not avail able; will be de liv ered at a later date !

12. Ac ces so ries ............................................................12-1

o Ba sic set ting thermo reg u la tor

o Dig i tal timer

o _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

o _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

o _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

506-2MS

5

1. Ge ne ral In for ma ti on

The se ope ra ting in struc tions are ad dres sed to all users of the de vi ce.

STT 110 / STT 160

»

The se ope ra ting in struc tions must be used by every per son char ged with
work on the unit.

506-2MS

Ge ne ral In for ma ti on 1-1

STT 110 / STT 160

1.1. War nings and sym bols

The fol lo wing war nings and sym bols are used in the se ope ra ting in struc tions:

This sym bol in di ca tes dan ger to life! Fa tal or se ri ous in ju ry is pos si ble if the
cor re spon ding in struc tions, re gu la tions or war nings are not ob ser ved.

»

L

F

&

$

This sym bol in di ca tes that se ri ous in ju ry is pos si ble if the cor re spon ding
in struc tions, re gu la tions or war nings are not ob ser ved.

This sym bol in di ca tes that ex ten si ve da ma ge to equip ment is pos si ble if
the cor re spon ding in struc tions, re gu la tions or war nings are not ob ser ­ved.

This sym bol in di ca tes in for ma ti on im por tant for be co ming fa mi li ar with
the equip ment, i.e. tech ni cal cor re la tions.

This sym bol in di ca tes that a tech ni cal term is ex plai ned at this point.

506-2MS

Ge ne ral In for ma ti on 1-2

STT 110 / STT 160

When dis pos ing of dry ing agents / bat ter ies / oil, ob serve all of fi cial rules.

Cau tion: High noise pol lu tion !
For all work on the equip ment, hear ing pro tec tion should be worn.
Avoids im pair ment of hear ing!

Cau tion: Dan ger of crush ing !
Dis con nect the equip ment from mains sup ply be fore start ing
mainenance pro ce dures. All com pressed air pipes on the equip ment
should be de pres su rised be fore start ing main te nance work.

Cau tion: Dan ger of hot sur face !
Be fore start ing any work wait un til all parts have been cooled down suf fi ­ciently. Avoid touch ing any of these parts!

Cau tion: Dan ger of skid ding !
Re move any gran ules re main ing on the ground.

Cau tion: Dan ger to life through elec tri cal shock !
Ob serve that the con trol sys tem is still un der volt age even when the main
switch is switched off.

506-2MS

Ge ne ral In for ma ti on 1-3

CTT 110 / CTT 160

1.2. Ex pla na tions and in for ma ti on

Va ri ous terms and de sig na tions are used in the se ope ra ting in struc tions to en su re cla ri ty. The re ­fo re plea se note that the terms used in the text stand for the cor re spon ding ex pla na tions lis ted be ­low.

Equip ment

•

”Equip ment” can mean an in di vi du al unit, a ma chi ne or an in stal la ti on.

Ope ra ting per son nel

•

The ”ope ra ting per son nel” are per sons ope ra ting the equip ment on their own re spon si bi li ty or ac ­cor ding to in struc tions.

Ope ra tor

•

The ”ope ra tor” of the equip ment (pro duc ti on ma na ger, fo re man, etc.) is the per son re spon si ble for
all pro duc ti on se quen ces. The ope ra tor in structs the ope ra ting per son nel of what is to be done.

Ope ra ting in struc tions

•

The ”ope ra ting in struc tions” des cri be the in ter ac ti on of the equip ment, pro duc ti on se quen ces or
me thods. The ope ra ting in struc tions must be com pi led by the ope ra tor of the equip ment.

Equip ment fo re man

•

When se ve ral ope ra ting per son nel work on one ma chi ne, the ”equip ment fo re man” coor di na tes
the se quen ces. The equip ment fo re man must be ap poin ted by the ope ra tor.

Trai ned per son nel

•

”Trai ned per son nel” are per sons who, due to their trai ning, are aut ho ri zed to car ry out the re qui red
work.

1.3. Le gal ba sis

See “Ma nu fac tu rer’s Cer ti fi ca te” resp. “Cer ti fi ca te of Con for mi ty”.

1.4. Fields of ap pli ca tions

For the dry ing of ther mo plas tic gra nu les and re grind be fo re pro ces sing in or der to re mo ve all re ­mai ning moi stu re from the gra nu les both in si de and out, in de pen dent of cli ma te or am bient air
con di tions.

1.5. No tes on Usa ge

Ex pe rien ced ope ra tors can be gin di rect ly with the chap ter on “Start-up” if the unit has been pro -

•

per ly in stal led.

506-2MS

If the unit has not been in stal led yet, ob ser ve the in struc tions in the chap ter on “As sem bly In struc -

•

tions” and “Trans port, As sem bly and Sto ra ge”.

Ge ne ral In for ma ti on 1-4

2. Sa fe ty in struc tions

The se sa fe ty in struc tions ap ply to all per sons wit hin the ran ge of ac ti on of the
equip ment.

»

Plea se in form all per sons wit hin the ran ge of ac ti on of the equip ment of the
di rect and in di rect ha zards con nec ted with the equip ment.

The se ope ra ting in struc tions are to be used by all per sons as sig ned ac ti vi ­ties con nec ted with the equip ment.

Knowled ge of the En glish langua ge is pre re qui si te.

En su re in each case that the ope ra ting per son nel are fa mi li ar with the ope ra ­ting in struc tions and the functi on of the equip ment.

STT 110 / STT 160

506-2MS

Sa fe ty in struc tions 2-1

STT 110 / STT 160

2.1. For your sa fe ty

Ge ne ral

The ope ra ting per son nel of this equip ment must be at least 16 ye ars old.

Plea se read the se ope ra ting in struc tions ca re ful ly be fo re ta king into ope ra ti on for the first time.
Con tact us should que stions ari se. This avoids in ju ry and da ma ge to equip ment!

The se ope ra ting in struc tions must be kept avai la ble at all ti mes at the pla ce of ope ra ti on of the
equip ment. Im pro per ope ra ti on re sults in dan ger of ac ci dents!

Plea se note that, for rea sons of cla ri ty, not all con cei va ble ca ses re gar ding ope ra ti on or main ten ­an ce of the equip ment can be co ver ed in the se ope ra ting in struc tions.

Plea se ob ser ve all sa fe ty in struc tions and war nings on the equip ment. This avoids in ju ry and da ­ma ge to equip ment!

All work on the equip ment is to be car ried out by per sons who se qua li fi ca tions are spe ci fied in the
per tai ning chap ters of the ope ra ting in struc tions. Im pro per ope ra ti on re sults in dan ger of ac ci ­dents!

The pro per wor king clot hes are to be worn du ring any work on the equip ment. This avoids in ju ry!

The lo cal re gu la tions and re qui re ments per tai ning to this equip ment must be ob ser ved.

Dis con nect elec tri cal com po nents from the mains supp ly be fo re work is car ried out on the se com ­po nents Cau ti on: Dan ger to life through elec tri cal shock!

Com pi le de tai led ope ra ting in struc tions ba sed on the se Ope ra ting in struc tions for the se quen ce
of pro ce du res to be car ried out on this equip ment. Im pro per ope ra ti on re sults in dan ger of ac ci ­dents!

Ob ser ve that the con trol sys tem is still un der vol ta ge even when the main switch is swit ched off.
Cau ti on: Dan ger to life through elec tri cal shock!

506-2MS

Sa fe ty in struc tions 2-2

STT 110 / STT 160

As sem bly

Com pa re the con nec ted lo ads with tho se of the mains supp ly. Dan ger of in ju ry through elec tri cal
shock!

When using lif ting gear, plea se ob ser ve the per tai ning re gu la tions. Cau ti on: Dan ger of ac ci dents!

Do not mo di fy, add ot her equip ment or chan ge the de sign of the equip ment wit hout the ap pro val
of the ma nu fac tu rer. Cau ti on: Dan ger of ac ci dents!

At tach ments not supp lied by Ster ling must be ma nu fac tur ed in ac cor dan ce with sa fe ty re gu la ti on
EN 294. Dan ger of ac ci dents!

The equip ment may only be ope ra ted when all the as so cia ted com po nents are pro per ly con nec ­ted up and in ac cor dan ce with the re le vant re gu la tions. This avoids in ju ry and da ma ge to equip ­ment!

Ope ra te the de vi ce only if all its com po nents are groun ded. Dan ger: ac ci dent through elec tri cal
shock!

Plea se note for in stal la ti on that the equip ment is top-he avy. Dan ger exists that it may topp le over!

Take care that the de vi ce is not stan ding on the mains ca ble. This will pre vent dan ger to peo ple
and ma te ri al!

Ope ra ti on

Ap point an equip ment fo re man to be re spon si ble for the equip ment.

En su re that the ope ra ting per son nel are pro vi ded de tai led in struc ti on in the ope ra ti on of the
equip ment. Im pro per ope ra ti on re sults in dan ger of ac ci dents!

When the main switch is swit ched off for rea sons per tai ning to sa fe ty, it must be se cu red against
un aut ho ri zed ac ti vat ion. Cau ti on: Dan ger of ac ci dents!

Re pair work may be car ried out by trai ned per son nel only. Cau ti on: Dan ger of ac ci dents!

Ne ver ope ra te the equip ment when parti al ly dis mant led! Dan ger! Limbs may be caught in ma chi ­ne ry! Elec tric shock!

In case of mal functi on, shut down the equip ment im me di ate ly. Have mal functions cor rec ted im ­me di ate ly. Dan ger of ac ci dents!

The ma chi ne is in ten ded only for the dry ing of gra nu la ted plas tics. Any ot her or ad di tio nal use is
con tra ry to spe ci fi ca tions.

This equip ment is not suit ab le for food pro ces sing.

The sa fe ty in struc tions of the con nec ted ma chi nes must be fol lo wed.

Plea se note that sound le vels ex cee ding 85 db(A) may in the long term da ma ge your he alth. Use
the ap pro pria te ear muffs. This avoids im pair ment of hea ring!

Plea se note that the dry ing cells, dry ing hop pers and air pi pings grow hot du ring use. Avoid tou ­ching any of the se parts! Dan ger: In ju ry through burns!

506-2MS

Ne ver ope ra te the dry er wit hout side pa nels. Dan ger: Limbs may be caught in ma chi ne ry! In ju ry
through burns!

Sa fe ty in struc tions 2-3

STT 110 / STT 160

Ope ra te the dry er only if the re is at least one dry ing hop per ope ra ting. This will pre vent da ma ge of
ma te ri al!

When dry ing plas tics which emit ga ses dan ge rous for hu man he alth, take care that the re ge ne ra ­ti on ex haust air is dis po sed of wit hout pol lu ting the en vi ron ment. This will pre vent dan ger to peo ­ple and ma te ri al!

Main ten an ce

Be fo re star ting main ten an ce work, ap point a su per vi sor.

In form the re spon si ble per son nel be fo re main ten an ce work on the sys tem is start ed. Cau ti on:
Dan ger of ac ci dents!

Dis con nect the equip ment from mains supp ly be fo re star ting main ten an ce pro ce du res to en su re
that it can not be swit ched on un in ten tio nal ly. Cau ti on: Dan ger of ac ci dents!

All pi pes, ho ses and scre wed con nec tions should be che cked re gu lar ly for le aks and da ma ge.
Any faults which ari se should be cor rec ted im me di ate ly. Dan ger of ac ci dents!

De pres su ri ze all com pres sed air pi ping be fo re star ting main ten an ce work. Dan ger of ac ci dents!

The air fil ters should only be clea ned/re pla ced when the the main switch is off and the blo wer has
stop ped. This avoids in ju ry and da ma ge to equip ment!

Any main ten an ce work on the equip ment should only be start ed when the the main switch is off
and the blo wer has stop ped. This avoids in ju ry and da ma ge to equip ment!

Check the v-belts of the blo wer only when the main switch is swit ched off and the blo wers have
stop ped. Cau ti on: Dan ger of ac ci dents!

Open dry ing hop pers only if they are com ple te ly emp ty. Dan ger of ac ci dents!

Ne ver open dry ing hop pers whi le the de vi ce is in ope ra ti on. Dan ger: In ju ry through burns!

Open dry ing hop pers only if they have been coo led down suf fi cient ly. Dan ger: In ju ry through
burns!

Be fo re star ting main ten an ce work wait un til the dry ing cells, dry ing hop pers and air pi pings have
been coo led down suf fi cient ly. Avoid tou ching any of the se parts! Dan ger: In ju ry through burns!

Re mo ve any gra nu les re mai ning on the ground. Dan ger of ac ci dents!

Ar rest the wheels af ter in stal la ti on if the dry er is moun ted on a mo va ble fra me. This will pre vent
dan ger to peo ple and ma te ri al!

506-2MS

Sa fe ty in struc tions 2-4

STT 110 / STT 160

2.2. For the sa fe ty of the de vi ces

Ne ver chan ge set tings wit hout ca re ful ly as ses sing the con se quen ces.

Use only ori gi nal Ster ling spa re parts.

Ob ser ve the main ten an ce in struc tions.

Keep a re cord of all main ten an ce works and re pairs.

Plea se note that elec tro nic com po nents can be da ma ged by sta tic disch ar ge.

Be fo re in iti al ope ra ti on and in re gu lar in ter vals, make sure that no elec tri cal con nec tions are loo ­se.

Ne ver re ad just sen sors wit hout ex act ly kno wing their functions.

Plea se en su re that the per mit ted sto ra ge tem pe ra tu re lies bet ween 0 and +55 °C
(32 to +131 °F).

Plea se en su re that the per mit ted ope ra ti on tem pe ra tu re lies bet ween 0 and +45 °C
(32 to +113 °F).

Check the di rec ti on of ro ta ti on of the blo wers af ter the elec tri cal con nec tions have been made
(see ro ta tio nal di rec ti on ar row).

Cle an the dry ing hop pers be fo re the first fil ling.

Note the in struc tions of the ma te ri al ma nu fac tu rer for the ma xi mum dry ing tem pe ra tu re.

Note the dry ing in struc tions of the ma te ri al ma nu fac tu rer.

Take care that the dry ing hop pers are al ways com ple te ly fil led and that the re ten ti on pe ri od is re ­spec ted if con ti nu al re mo val is ta king pla ce.

Note that too lar ge amounts ta ken from the dry ing hop per lead to in suf fi cient dry ing of the ma te ri ­al.

Clo se the air stop val ves of dry ing hop pers which are emp ty or have not been used.

Note down all data which you have en te red into the con trol sys tem.

The pass word is to be en trus ted to aut ho ri sed per son nel only.

Plea se note that the tem pe ra tu re of the dry er hea ting sys tem must al ways be set lo wer than that of
the supp le men ta ry hea ters.

When you dis po se of dry ing agents, ob ser ve all of fi ci al ru les.

Note that dry ing cells are re pla ced or re fil led by Ster ling only if they are emp ty.

The ma te ri al le vel may not fall be low 40 % in the dry ing hop per, when ma te ri al is con ti nu ous ly re ­mo ved from the dry ing hop per, but no ma te ri al is con ti nu ous ly fed into the dry ing hop per (batch
dry ing). Clo se the thrott le val ves.

Read the ope ra ting ma nu als of the con nec ted de vi ces.

506-2MS

Sa fe ty in struc tions 2-5

3. S tart up

STT 110 / STT 160

This chap ter is ad dres sed to the ope ra tors of the ma chi ne.

»

F

This chap ter as su mes ge ne ral skills with dry ing equip ment.

This chap ter as su mes that the functio nal des crip ti on has been read and un ­ders tood.

It must be en su red that the ope ra tors have the re qui red ex pe rien ce.

Make sure that the main switch is at “0" po si ti on.

Check the dry ing hop per for cle an li ness.

Check to see whet her the ad he si ve film on the dry ing hop per has be re ­mo ved.

If the re is a re turn air coo ler, switch on its coo lant cir cuit.

If the re is a ti mer clock (op tional), ad just it. Read the ope ra ting ma nu al of
the ti mer clock.

Check whet her the re lea se switch “Ti mer” and the re lea se swit ches
“Hop per” (ST1 - ST6) are at ”0" po si ti on.

&

506-2MS

The sig nal lamp “trou ble” may flash short ly whi le the val ve block is chan ­ged.

S tart up 3-1

STT 110 / STT 160

3.1. In iti al Ope ra ti on

Check whet her the in let of the dry ing hop per is clo sed by a blind lid, or whet her a con vey or unit
(op tio nal) is in stal led.
If not, ma nu fac tu re a suit ab le blind lid and in stall it on the in let of the dry ing hop per or in stall the
con vey or unit (op tio nal).

At tach ments which are not supp lied by Ster ling must be ma nu fac tur ed
ac cor ding to the sa fe ty re gu la ti on Eu ro pe an Stan dard 294.

F

Check whet her the coo lant cir cuit of the re turn air coo ler is tur ned on (if a re turn air coo ler is in stal ­led).

3.1.1. Swit ching on the Dry er

Switch on the main switch of the dry er.

&

For ope ra ti on with ti mer clock (op tional):

Turn the re lea se switch “Ti mer” at po si ti on:

For ope ra ti on wit hout ti mer clock:

Turn the re lea se switch “Ti mer” at po si ti on:

&

506-2MS

The sig nal lamp “po wer” goes on.

The blo wer is run ning.

If the dry er has not been in use for se ve ral months it must be ope ra ted for
about 2 hours wit hout ma te ri al.

F

S tart up 3-2

STT 110 / STT 160

EXIT

Turn the re lea se swit ches “Hop per” (ST1 - ST6) at “I” po si ti on.

Turn the thermo reg u la tor to +80 °C (176°F) for the dry ing tem per a ture.

Press the “PGM” key.

Set by me ans of the ar row keys the dry ing tem pe ra tu re to “80".

Af ter 2 se conds the dis play flas hes and the va lue is sto red.

Press the “EXIT” key (the set point va lue and the ac tu al va lue
of the dry ing tem pe ra tu re are dis play ed).

Af ter 2 hours turn the re lea se swit ches “Hop per” (ST1 - ST6) at “0” po si ti on.

Turn the re lea se switch “Ti mer” at po si ti on:

L

If the re is a re turn air coo ler in stal led, switch off its coo lant cir cuit.

Switch off the main switch of the dry er.

&

506-2MS

Wait un til the blo wer has stop ped.
The run on time of the blo wer is 10 mi nu tes.

The sig nal lamp “po wer” goes off.

S tart up 3-3

3.2. Con ti nu ous Ope ra ti on

Fill at least half of the dry ing hop per with ma te ri al.

F

3.2.1. Swit ching the Dry er on

Switch on the main switch of the dry er.

STT 110 / STT 160

&

For ope ra ti on with ti mer clock (op tional):

Turn the re lea se switch “Ti mer” at po si ti on:

For ope ra ti on wit hout ti mer clock:

Turn the re lea se switch “Ti mer” at po si ti on:

&

The sig nal lamp “po wer” goes on.

The blo wer is run ning.

506-2MS

S tart up 3-4

STT 110 / STT 160

EXIT

3.2.2. Set ting the Dry ing Tem pe ra tu re

Turn the re lea se swit ches “Hop per” (ST1, ST2) at “I” po si ti on.

For each dry ing hop per, set the re qui red dry ing tem pe ra tu re (= de si red va lue) by me ans of the re ­spec ti ve ther mo re gu la tor.

Check whet her the set dry ing tem pe ra tu re is ap pro pria te for the ma te ri als which have been fil led
in.
Ob ser ve the in struc tions of the ma te ri al ma nu fac tu rer.

Af ter the first fil ling, pro cess the ma te ri al only af ter the re ten ti on pe ri od is over.
Ob ser ve the in struc tions of the ma te ri al ma nu fac tu rer.

Press the “PGM” key.

By me ans of the ar row keys se lect the de si red va lue for
the dry ing tem pe ra tu re.

Af ter 2 se conds the dis play flas hes and the va lue is sto red.

Press the “EXIT” key (the set point va lue and the ac tu al va lue
of the dry ing tem pe ra tu re are dis play ed).

Af ter a chan ge of ma te ri als, im me di ate ly check and cor rect the set dry ing
tem pe ra tu re.

F

506-2MS

S tart up 3-5

Op ti mi zing the ther mo re gu la tor

EXIT

EXIT

PGM

K1 K1 K2 K2

K3 K3

tunE

60

EXIT

EXIT

PGM

tunE

60

Press the “EXIT” key for at least 2 se conds.

“tunE” flas hes. The op ti mi za ti on can take se ve ral mi nu tes.

If “tunE” stops flas hing, the op ti mi za ti on is fi nis hed.

STT 110 / STT 160

Press the “EXIT” key.

506-2MS

S tart up 3-6

3.3. Swit ching the Dry er off

Set the re lea se switch “Ti mer” at po si ti on:

STT 110 / STT 160

L

If the re is a re turn air coo ler in stal led, switch off its coo lant cir cuit.

Switch off the main switch of the dry er.

&

Wait un til the blo wer has stop ped.
The run on time of the blo wer is 10 mi nu tes.

The sig nal lamp “po wer” goes off.

506-2MS

S tart up 3-7

4. Er ror and er ror cor rec tion

This chap ter is di rected at the op er a tors of the equip ment.

STT 110 / STT 160

»

F

&

This chap ter as sumes gen eral skills in deal ing with dry ing sys tems.

This chap ter as sumes that the “start-up” de scrip tion has been read and un ­der stood.

It should be en sured in each and ev ery case that the op er a tors have the rel e ­vant skills.

Faults must be elim i nated be fore the con trol sys tem can again start op er ­at ing.

An alarm is in di cated by steady light of the sig nal lamp “trou ble”.

When the fault has been elim i nated, the sig nal lamp “trou ble” goes off.

506-2MS

Er ror and er ror cor rec tion 4-1

STT 110 / STT 160

The fol low ing er rors can lead to an alarm:

Blower

The pres sure of the blower is too low.
Check the blower.
Vac uum sen sor de fec tive.

Re gen er a tion heater 1

The safety tem per a ture lim iter of the re gen er a tion heater 1 has been ac ti vated.
Check the safety tem per a ture lim iter.
Ster ling Ser vice.

Re gen er a tion heater 2

The safety tem per a ture lim iter of the re gen er a tion heater 2 has been ac ti vated.
Check the safety tem per a ture lim iter.
Ster ling Ser vice.

Hop per heater

The safety tem per a ture lim iter of the hop per heater has been ac ti vated.
Check the safety tem per a ture lim iter.
Ster ling Ser vice.

506-2MS

Er ror and er ror cor rec tion 4-2

5. Main te nance

This chap ter is in tended for per sons with skills in elec tri cal and me chan i cal
ar eas due to their train ing, ex pe ri ence and re ceived in struc tions.

»

Per son nel us ing the in struc tions in this chap ter must be in structed of the reg ­u la tions for the pre ven tion of ac ci dents, the op er at ing con di tions and safety
reg u la tions and their im ple men ta tion.

En sure in each case that the per son nel are in formed.

For main te nance work tak ing place at theights of over approx. 1829 mm (6
ft.), use only lad ders or sim i lar equip ment and work ing plat forms in tended for
this pur pose. At greater heights, the proper equip ment for pro tec tion against
fall ing must be worn.

Use only suit able lift ing gear which is in proper work ing or der and load sus ­pen sion de vices with suf fi cient car ry ing ca pac ity. Do not stand or work un der
sus pended loads!

En sure that the elec tric mo tors/switch cab i nets are suf fi ciently pro tected
against mois ture.

STT 110 / STT 160

Use suit able work shop equip ment.

Be fore start ing main te nance work, ap point a su per vi sor.

In form the re spon si ble per son nel be fore main te nance work on the sys tem is
started.

Never op er ate the equip ment when par tially dis man tled.

Any main te nance and re pair work NOT de scribed here may only be car ried
out by Ster ling ser vice per son nel or by spe cial ised staff author ised by
Colortronic.

L

506-2MS

Dis con nect the equip ment from mains sup ply be fore start ing
mainenance pro ce dures to en sure that it can not be switched on un in ten ­tion ally.

All com pressed air pipes on the equip ment should be de pres su rised be ­fore start ing main te nance work.

Main te nance 5-1

Please ob serve the main te nance sched ule.

STT 110 / STT 160

F

Be fore start ing main te nance work, clean the equip ment of oil, fuel or lu ­bri cant.

En sure that ma te ri als and in ci den tals re quired for op er a tion as well as
spare parts are dis posed of prop erly and in an en vi ron men tally sound
man ner.

Use only orig i nal Ster ling spare parts.

Keep re cord of all main te nance and re pair pro ce dures.

506-2MS

Main te nance 5-2

STT 110 / STT 160

5.1. Main te nance sched ule

Daily: Check warn ing signs on equip ment for good

leg i bil ity and com plete ness

Clean re turn air fil ters and cas ing (de pend ing
on dust build-up)

Weekly: Check main switch for proper func tion

Check the sig nal lamps for proper func tion ing

Ev ery six months: Change re turn air fil ters (de pend ing on dust build-up)

Clean air fil ter of the suc tion box

All elec tri cal and me chan i cal con nec tions
should be checked to see if they fit se curely

An nually: Dew point should be checked (only by

Ster ling ser vice per son nel)

When ever the
ma te rial is changed: The dry ing hop per and suc tion box must be cleaned

&

F

506-2MS

The ser vice in ter vals re fer to a 3-shift op er a tion.

The given main te nance in ter vals are av er age val ues.

Check whether in your in di vid ual case the main te nance in ter vals must be
short ened.

Main te nance 5-3

5.2. Cleaning or Re placing the Air Fil ter

Set the re lease switch “Timer” at po si tion:

STT 110 / STT 160

L

If there is a re turn air cooler in stalled, switch off its cool ant cir cuit.

L

&

Wait un til the blower has stopped.
The run on time of the blower is 10 min utes.

Switch off the main switch of the dryer (the sig nal lamp “power” goes off).

In ter rupt the mains sup ply so that the de vice can not be switched on un in ­ten tion ally.

Clogged fil ters sub stan tially re duce the amount of cir cu lat ing air and lead
to a pro duc tion lag of your dryer. Clogged fil ters may also dam age the
heat ing el e ments.

506-2MS

Main te nance 5-4

5.2.1. Cleaning or Re placing the Re turn Air Fil ter

STT 110 / STT 160

De tach the nut on the hous ing of the re turn
air fil ter and re move the hous ing cover.

Re move the nut of the fil ter car tridge.

Re move the fil ter car tridge.

Clean the in side of the re turn air fil ter hous ­ing. Use non-fi brous clean ing cloths or an
in dus trial type vac uum cleaner.

Blow com pressed air from the in side out
through the clogged fil ter car tridge or re ­place the fil ter car tridge.

Re-in stall the cleaned/new fil ter car tridge.

Mount the nut.

In stall the lid of the re turn air fil ter
hous ing.

STT 110 / STT 160

Air fil ter

Fix the nut.

F

&

STT 110 / STT 160

Never op er ate the dryer with out re turn air fil ter.

Pur chase or der num bers re turn air fil ter
when op er at ing with out re turn air cooler: ID 88366
when op er at ing with re turn air cooler: ID 88628

506-2MS

Main te nance 5-5

STT 110 / STT 160

5.3. Dis posing of Drying Agents

Please note that dry ing cells are re placed or re filled by Ster ling only if they are empty.

When dis pos ing of dry ing agents, ob serve all of fi cial rules.

Since used dry ing agents may con tain im pu ri ties from the dried ma te ri ­als, treat them as spe cial waste.

&

5.3.1.

5.3.2.

5.3.3.

5.3.4.

5.3.5.

5.3.6.

It is not pos si ble for Ster ling to take back the used dry ing agent or dry ing
cells with used dry ing agents.

5.3.7.

5.3.8.

506-2MS

5.3.9.

Main te nance 5-6

5.4. Cleaning the Drying Hop per

Set the re lease switch “Timer” at po si tion:

STT 110 / STT 160

L

If there is a re turn air cooler in stalled, switch off its cool ant cir cuit.

L

F

Wait un til the blower has stopped.
The run on time of the blower is 10 min utes.

Switch off the main switch of the dryer (the sig nal lamp “power” goes off).

In ter rupt the mains sup ply so that the de vice can not be switched on un in ­ten tion ally.

Clean the dry ing hop per each time you are chang ing the ma te ri als.

Make sure that the dry ing hop per has cooled down suf fi ciently.

Make sure that the dry ing hop per is com pletely empty.

Re move any gran ules re main ing on the ground.

506-2MS

Main te nance 5-7

ST 25

STT 110 / STT 160

Open the tog gle-type fas ten ers (A) at the hop per lid
and fold the hop per lid up wards (if in use: re move be ­fore the sin gle con veyor).

Clean the dry ing hop per.

Close the hop per lid and close the tog gle-type fas ten ­ers (A) (if in use: re-mount the sin gle con veyor).

Re move any gran ules re main ing in the clean ing open ing.

F

A

TT 25

506-2MS

Main te nance 5-8

STT 110 / STT 160

ST 60 - ST 1600

Open the clean ing open ing of the dry ing hop per: Lift and turn the han dle (A) to open the lock, if in
use: re move be fore the sin gle con veyor (ST 400 - ST 1600: 2 han dles).

Clean the dry ing hop per.

Close the clean ing open ing of the dry ing hop per: Turn the han dle (A) un til the clean ing open ing is
locked and then close the han dle (if in use: re-mount the sin gle con veyor).

Re move any gran ules re main ing in the clean ing open ing.

F

ST 1200 and ST 1600: Clean the bead.

506-2MS

Main te nance 5-9

6. Functio nal des crip ti on

This functio nal des crip ti on is ad dres sed to the ope ra tors of the equip ment.

STT 110 / STT 160

»

This functio nal des crip ti on as su mes ge ne ral fa mi lia ri ty with dry ing equip ­ment.

It should be ve ri fied that the ope ra tors do in deed have the ap pro pri ate skills.

506-2MS

Functio nal des crip ti on 6-1

STT 110 / STT 160

6.1. Ge ne ral In for ma ti on

The de hu mi di fied air dry ers were de ve lo ped for dry ing plas tic gra nu les. Due to their com pact con ­struc ti on, they can be em ploy ed next to the pro ces sing ma chi ne (dry ing hop per on the pro ces sing
ma chi ne) or with one or more dry ing hop pers as a mo va ble fa ci li ty (com pact fa ci li ty).

The dry ers work ac cor ding to the de hu mi di fied air prin ci ple, i.e., the air is not only hea ted but also
de hu mi di fied be fo re it flows through the dry ing hop per.

In this man ner, plas tic gra nu les can be dried down to a very small re si du al moi stu re con tent.

The dry ing tem per a ture can be ad justed, if nec es sary, up to a max i mum of +180 °C (356°F) (up ­per limit). Due to the heat that is re leased dur ing wa ter ab sorp tion in the dry ing cells, the lower
limit of the de hu mid i fied air tem per a ture is approx. +60 °C (140°F).

The dry ing ta kes pla ce con ti nu ous ly, i.e., the re are no rest pe ri ods due to re ge ne ra ti on of the dry ­ing agent.

The dry er is ra ted for con ti nu ous ope ra ti on.

F

The dry er may only be put into ope ra ti on if the dry ing hop per is fil led.

506-2MS

Functio nal des crip ti on 6-2

STT 110 / STT 160

All functi on se quen ces are ful ly au to ma tic.

The dry er is equip ped with two dry ing cells. One dry ing cell is part of the dry ing cy cle; the ot her
dry ing cell is re ge ne ra ted si mul ta ne ous ly.

Part of the de hu mi di fied air is used for re ge ne ra ting the moist dry ing cell. At the be gin ning of re ge ­ne ra ti on, it is hea ted by the re ge ne ra ti on hea ter. Af ter the end of the hea ting pe ri od, the dry ing cell
is coo led off by me ans of de hu mi di fied air. Af ter the switch-over time is rea ched, the re ge ne ra ted
dry ing cell is in clu ded in the dry ing cy cle, and the cy cle starts again.

1 Drying cell
2 Re gen er ating heater
3 Drying hop per
4 Di a phragm
5 Re turn air fil ter
6 Blower
7 Valve
8 Drying heater
9 Suc tion box

506-2MS

Func tional di a gram

Functio nal des crip ti on 6-3

STT 110 / STT 160

A di gi tal dis play of the cur rent dew point tem pe ra tu re can be supp lied as ad di tio nal equip ment.

As an op ti on, a ti mer clock can be supp lied which swit ches the dry er on or off at pre se lec ted ti mes.

Read the ope ra ting ma nu al of the ti mer clock.

F

1 2 3 4

8 7 6 5

1 = re lea se switch “hop per” ST1-ST6
2 = dew point dis play (op tio nal)
3 = sig nal lamp “po wer”
4 = sig nal lamp “trou ble”
5 = main switch
6 = re lea se switch “Ti mer”
7 = ti mer clock (op tio nal)
8 = ther mo re gu la tor “dry ing hop per” ST1-ST6

Ope ra ting unit

506-2MS

Functio nal des crip ti on 6-4

6.2. Dry ing Hop per (Op tio nal)

The ma te ri al is dried in the dry ing hop per.
The de hu mi di fied air is con duc ted through
the ma te ri al in the dry ing hop per and ta kes
up moi stu re. Dry ing hop pers must have the
ap pro pria te di men sions for their spe ci fic use
so that the de si red fi nal moi stu re con tent is
rea ched. When re fil ling a dry ing hop per, the
ma te ri al must first be dried com ple te ly be fo re
ma te ri al can be ta ken out for the first time.

If ma te ri al is ta ken out con ti nu ous ly, the re
must also be a con ti nu al ad di ti on of ma te ri al
into the dry ing hop per (con ti nu ous dry ing
pro cess). New (moist) ma te ri al is con duc ted
into the up per ope ning of the dry ing hop per
and slowly rea ches the ma te ri al out let at the
lo wer end. On its way from the up per to the
lo wer end, the ma te ri al is dried down to the fi ­nal moi stu re con tent.

In or der to gua ran tee a con ti nu ous dry ing
pro cess, we re com mend that you al ways
keep the dry ing hop per fil led com ple te ly.

STT 110 / STT 160

Dry ing Hop per

506-2MS

Functio nal des crip ti on 6-5

STT 110 / STT 160

EXIT

PGM

K1K1 K2K2

K3K3

180

60

6.2.1. Hop per Hea ter

Each dry ing hop per has its own hop per hea ter. The tem pe ra tu re of the de hu mi di fied air is ad jus ­ted by me ans of the ther mo re gu la tor. The set ting ran ge is from +60 - +180 °C. The cur rent tem pe ­ra tu re can be read off the di gi tal dis play (= ac tu al va lue).

The ther mo re gu la tor is fac to ry-pro gram med. Ne ver the less, you have to
set spe ci fic va lu es which are de pen dent on the pro ces sed ma te ri al.

F

Pro cess dis play
dry ing tem pe ra tu re

Set point dis play
dry ing tem pe ra tu re

“PGM” key,
Se lec ting ope ra ting le vel
or pa ra me ter se lec ti on

re du cing set point va lue in crea sing set point va lue

“EXIT” key,
Ab or ting the in put

Ther mo re gu la tor

506-2MS

Functio nal des crip ti on 6-6

STT 110 / STT 160

6.3. Con nec ti on to a Pneu ma tic Con vey ing Sys tem (Op tio nal)

Your dry ing fa ci li ty works best in com bi na ti on
with a pneu ma tic con vey ing sys tem. In this
way, your dry ing hop per will al ways be supp ­lied with suf fi cient ma te ri al.

The fa ci li ty will only take as much ma te ri al as
is re qui red by the pro ces sing ma chi nes. The ­re fo re, the dry ing re sult will al ways be the
same.

Ster ling dry ing hop pers are equip ped with a
suit ab le flan ge for ad ding a Ster ling pneu ma ­tic con vey or.

Suc ti on bo xes with one or three suc ti on tu ­bes can be supp lied as well (op tio nal). The se
suc ti on bo xes are de ve lop ped spe ci fi cal ly for
this type of hop per.

The loa ding of the con vey ing line with ma te ri ­al is ad jus ted by clo sing or by ope ning of the
con trol co ver (A).

A

Suc ti on box

6.4. Re turn Air Coo ler (Op tio nal)

A re turn air cooler must be em ployed if the re turn air tem per a ture is
higher than +65 °C (149°F).

F

A re turn air coo ler im pro ves the ef fi cien cy of the dry ing cells.

&

506-2MS

The re turn air coo ler can be con nec ted to a coo lant cir cuit or to the wa ter mains net work.

The lo wer the re turn air tem pe ra tu re, the bet ter the ef fi cien cy of the dry ­ing cells.

Functio nal des crip ti on 6-7

7. Trans port, As sem bly and Stor age

This chap ter is in tended for all op er at ing per son nel of the equip ment.

STT 110 / STT 160

»

Per son nel us ing these in struc tions must be in structed in the reg u la tions for
the pre ven tion of ac ci dents, the op er at ing con di tions and safety reg u la tions
and their im ple men ta tion.

En sure in each case that the op er at ing per son nel are suf fi ciently in formed.

Please in form all per sons within the range of ac tion of the equip ment of the
di rect and in di rect haz ards con nected with the equip ment.

Please ob serve all safety reg u la tions for the op er a tion of lift ing equip ment.

506-2MS

Trans port, As sem bly and Stor age 7-1

STT 110 / STT 160

7.1. Tansport and Packing

Please en sure ad e quate car ry ing ca pac ity of the lift ing equip ment.
Note that the dryer sys tem is top-heavy. Risc of top pling!

»

The ma chine must not be tilted or laid on its side.

F

The equip ment pass a rig or ous op er at ing test in the fac tory and are packed care fully to avoid
trans port dam age.

Please check pack ing on de liv ery for trans port dam age.

The in let and dis charge flanges are sealed with plugs, so that no dirt can en ter dur ing trans port.
Plugs must be re moved be fore as sem bly.

Packing ma te ri als should be dis posed of ac cord ing to en vi ron men tal laws or re used.

The dryer or the com pact unit is de liv ered on a pal let.

The dryer should only be moved by means of the ap pro pri ate lift ing equip ment (e. g. a fork lift
truck or a work shop crane).

Fas ten the trans port ca bles to the eye lets of the con trol cab i nets.

Trans port must be shock-proofed and free from vi bra tions.

506-2MS

Trans port, As sem bly and Stor age 7-2

7.2. As sem bly

STT 110 / STT 160

Please en sure ad e quate car ry ing ca pac ity of the lift ing equip ment.

»

Check the car ry ing ca pac ity of the point of in stal la tion, par tic u larly if in stalled
on a plat form.

The place se lected for in stal la tion should be as free of vi bra tions as pos si ble.

The main switch must be freely ac ces si ble.

Ground the equip ment against elec tro static charg ing.

The ma chine must not be tilted or laid on its side.

F

Be cause of its com pact con struc tion the dryer can be in stalled di rectly be side the pro cess ing ma ­chine (dry ing hop per on the pro cess ing ma chine) or with one or more dry ing hop pers as a mov ­able fa cil ity (com pact fa cil ity).

Spe cial foun da tions are not nec es sary for in stal la tion.

The dryer must be in stalled on a level sur face and must not be ex posed to ex ces sive hu mid ity.
The max i mum per mis si ble am bi ent tem per a ture is 45 °C (113°F).

To fa cil i tate ser vic ing, the dryer should be in stalled in such a way that that it is ac ces si ble from
3 sides. Make sure that the air fil ters can be changed with out prob lems.

To con serve en ergy, keep the dis tance be tween dryer, hop per and pro cess ing ma chine as small
as pos si ble.

The wheels of the com pact unit should be locked to en sure sta ble in stal la tion.

The foil should be re moved from the dry ing hop per.

7.3. Stor age

The con trol sys tem may only be stored at tem per a tures from 0 to +55°C (32 to +131 °F).

Be tween de liv ery and ma chine com mis sion ing the equip ment should be stored in a dry, dust-free
and vi bra tion-free room.

506-2MS

Trans port, As sem bly and Stor age 7-3

8. As sem bly in struc tions

These in stal la tion in struc tions are in tended for per sons with skills in elec tri ­cal and me chan i cal ar eas due to their train ing, ex pe ri ence and re ceived in -

»

struc tions.

Per son nel us ing these in stal la tion in struc tions must be in structed in the reg ­u la tions for the pre ven tion of ac ci dents, the op er at ing con di tions and safety
reg u la tions and their im ple men ta tion.

En sure in each case that the per son nel are in formed.

The in stal la tion in struc tions pro vided in the cor re spond ing op er at ing in struc ­tions ap ply for all con nected equip ment.

Ob serve safety reg u la tions with re gard to lift ing gear han dling.

All in stal la tion work must be car ried out with the equip ment dis con nected
from elec tri cal power and com pressed air sup ply.

STT 110 / STT 160

L

For in stal la tion work tak ing place at heights of over approx. 6 feet (1829
mm), use only lad ders or sim i lar equip ment and work ing plat forms in ­tended for this pur pose. At greater heights, the proper equip ment for pro ­tec tion against fall ing must be worn.

Use only suit able lift ing gear which is in proper work ing or der and load
sus pen sion de vices with suf fi cient car ry ing ca pac ity. Do not stand or
work un der sus pended loads!

Use suit able work shop equip ment.

In stall the equip ment such that all parts are eas ily ac ces si ble; this fa cil i ­tates main te nance and re pair work

F

506-2MS

As sem bly in struc tions 8-1

STT 110 / STT 160

B

A

8.1. In stal la tion of the exhauster fan for re gen er a tion of ex haust air

When plas tics are be ing dried that re lease harm ful gases dur ing the dry ing pro cess, care must be
taken that the re gen er a tion ex haust air is dis posed of in an en vi ron men tally sound way. At the
same time the through put of the re gen er a tion blower must not be al tered. It should be noted when
as sem bling a dis posal sys tem (e.g. an exhauster sys tem) that the re gen er a tion ex haust air is very
hu mid. Thus con den sa tion may form, which must not un der any cir cum stances re turn to the dryer.

8.2. Grounding the equip ment against elec tro static charg ing

Con sid er able elec tro static charg ing may oc cur in the equip ment dur ing pro cess ing of the var i ous
ma te ri als. For this rea son, all com po nents must be suf fi ciently grounded, see ground ing bolt
dryer (A) and dry ing hop per (B).

En sure that the reg u la tions of the lo cal elec tric sup ply com pany are ob served.

Grounding the equip ment

506-2MS

As sem bly in struc tions 8-2

8.3. Elec tri cal Con nec tion

The elec tri cal con nec tion of the dryer and of the hop per heat ers may only be
car ried through or as signed by Ster ling ser vice staff or by qual i fied staff au -

»

tho rized by Sterling.

Other per sons are not per mit ted to carry through the elec tri cal con nec tion.

Ob serve the rules of the lo cal elec tric ity board.

The main switch must be freely ac ces si ble.

Ground the equip ment against elec tro static charg ing.

Reg u larly make sure that none of the elec tri cal or screw con nec tions are
loose.

F

Make sure that the main switch is at “0" po si tion be fore the elec tri cal con ­nec tion is car ried out.

STT 110 / STT 160

The op er at ing volt age is 480/3/60

Special volt ages can be sup plied on re quest.

The con nected loads* are

STT 110 ........................................................approx. 3.2 kW;

STT 160........................................................ approx. 3.6 kW.

*If hop per heat ers are in stalled, the value of each hop per heater must be added to these con ­nected loads (max. 9.0 kW).

The fuse pro tec tion must have 32 A.

506-2MS

As sem bly in struc tions 8-3

STT 110 / STT 160

8.4. Con nec tion of Re turn Air Cooler (Op tional)

A re turn air cooler must be em ployed if the re turn air tem per a ture is
higher than +65 °C (149°F).

F

You can con nect the re turn air cooler to a cool ant cir cuit or to the wa ter mains net work.

The wa ter flow rate in the wa ter mains net work* is for:

STT 110............................................ approx. 0.35 m3/h (12.46 cf/h)

STT 160 ............................................approx. 0.48 m3/h (17.05 cf/h)

(*wa ter tem per a ture: +6 °C) (42.8°F)
Rate your cool ant cir cuit ac cord ingly.

Con nect the cool ant in- and out lets to the re turn air cooler.

Ob serve the flow ing di rec tion of the cool ant.

Check the tight ness of the con nec tions.

Con nec ti on of the re turn air coo ler

506-2MS

STT 110 / STT 160

As sem bly in struc tions 8-4

STT 110 / STT 160

9. Technical Data

9.1. STT 110

amount of de hu mid i fied air:.............................max. 110 m3/h (3,8846.1 cf/h)

op er at ing volt age:...............................................400 V/3 AC/50 Hz

spe cial volt ages can be sup plied on re quest

con nected load: .........................................................3.2 kW

cal o rific out put (dry ing)*: ..............................................max. 9.0 kW

*de pend ing on the equip ment with hop per heat ers

cal o rific out put (re gen er at ing):..............................................2.4 kW

driv ing power (dry ing, re gen er at ing): .......................................0.75 kW

dry ing tem per a ture: ..........................................max. +180 °C(356°F)

width: .........................................................900 mm (35.5 in.)

depth:.........................................................666 mm (26.2 in.)

height: .......................................................1320 mm (52.0 in.)

weight: ...............................................approx. 180 kg (396.83 lbs.)

noise: .........................................................approx. 66 dB (A)

op tions: .............................................................timer clock

..............................................................dew point dis play

............................................................... re turn air cooler

Re turn Air Cooler

wa ter flow rate in the wa ter mains net work*:............... approx. 0.35 m3/h (12.46cf/h)

(*wa ter tem per a ture: +6 °C) (42.8°F)

Ø pipe con nec tion:...................................................1/2” (0.5 in.)

506-2MS

Technical Data 9-1

STT 110 / STT 160

9.2. STT 160

amount of de hu mid i fied air:.............................max. 160 m3/h (5,650.35 cf/h)

op er at ing volt age:...............................................400 V/3 AC/50 Hz

spe cial volt ages can be sup plied on re quest

con nected load: .........................................................3.6 kW

cal o rific value (dry ing)*:...............................................max. 9.0 kW

*

de pend ing on the equip ment with hop per heat ers

cal o rific value (re gen er at ing): ..........................................max. 2.4 kW

driv ing power (dry ing, re gen er at ing): ........................................1.1 kW

dry ing tem per a ture: ..........................................max. +180 °C (356°F)

width: ........................................................900 mm (35.46 in.)

depth:.........................................................666 mm (26.2 in.)

height: .......................................................1320 mm (52.0 in.)

weight: ..............................................ap prox. 195 kg (432.10 lbs.)s

noise: .........................................................approx. 72 dB (A)

op tions: .............................................................timer clock

..............................................................dew point dis play

............................................................... re turn air cooler

Re turn Air Cooler

wa ter flow rate in the wa ter mains net work*: ............... approx. 0.48 m3/h(17.05 cf/h)

(*wa ter tem per a ture: +6 °C) (42.8°F)

Ø pipe con nec tion:...................................................1/2” (0.5 in.)

506-2MS

Technical Data 9-2

9.3. Di men sion Sheet

STT 110 / STT 160

Di men sions and data with out ob li ga tion. Di men sions in mm. (in.) Spec i fi ca tions may be sub ject to al ter ations.

506-2MS

Technical Data 9-3

10. Spare parts list

This spare parts list is in tended to be used only by trained per son nel.

STT 110 / STT 160

»

Other per sons are not per mit ted to mod ify or re pair the equip ment.

506-2MS

Spare parts list 10-1

STT 110 / STT 160

6

STT 110 / STT 160

1

2

2

4

5

2, 3

7

Pos. ID-num ber De scrip tion

1 85677 blower STT 110

85367 blower STT 160

2 94233 seal ing

3 85323 diffusor

4 96196 desiccant

5 23918 seal ing

6 88366 fil ter car tridge, when op er at ing wit hout re turn air cooler

88628 fil ter car tridge, when op er at ing with re turn air cooler

7 85819 guide roll with fix ing de vice

506-2MS

85820 guide roll

Spare parts list 10-2

Re turn air cooler (op tional)

29786 re turn air cooler

83972 hose

Hop per heater

85343 ra di a tor 1,5 kW
84512 ther mal breaker
85652 tem per a ture lim iter

85338 ra di a tor 3,0 kW
84510 ther mal breaker
85652 tem per a ture lim iter

85363 ra di a tor 6,0 kW
84509 ther mal breaker
85652 tem per a ture lim iter

85651 ra di a tor 9,0 kW
84508 ther mal breaker
85652 tem per a ture lim iter

STT 110 / STT 160

86371 Pt 100 (3 m)
89846 Pt 100 (6 m)
93303 Pt 100 (9 m)
86387 Pt 100 (12 m)

18232 air con trol flap

84492 ther mom e ter

06925 flow in di ca tor

506-2MS

Spare parts list 10-3

Op er ating unit

5 4 3 2 5 4 3 2

6 7 1 6 7 1

STT 110 / STT 160

Pos. ID-num ber De scrip tion

1 82368 main switch

2 82394 LED el e ment, green

82393 cap
82495 fix ing adapter

3 82494 LED el e ment, white

82392 cap
82495 fix ing adapter

4 26207 dew point dis play (op tional)

5 82395 se lec tor switch ac tu a tor

82490 con tact el e ment

6 87454 thermo reg u la tor TT1 - TT6

7 85241 timer clock (op tional)

83646 seal ing

506-2MS

Spare parts list 10-4

Con trol unit

86376 mo tor

85675 ra di a tor 2.4 kW

95819 pull-but ton

87440 con tact el e ment

83975 con trol ler

85275 tem per a ture lim iter

88914 contactor

87933 power sup ply

83647 cut-out

88907 ter mi nal

99815 fuse

84982 re lay holder

84983 re lay

STT 110 / STT 160

83624 ter mi nal

84512 ther mal breaker STT 110

84511 ther mal breaker STT 160

84159 aux il iary switch

506-2MS

Spare parts list 10-5

11. Elec tri cal man ual

This elec tri cal man ual is in tended to be used only by Ster ling ser vice per son ­nel and trained per son nel au tho rized by Sterling.

»

Other per sons are not per mit ted to mod ify or re pair the equip ment.

o Con nec tion di a gram no.: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

o Cur rently not avail able; will be de liv ered at a later date !

STT 110 / STT 160

506-2MS

Elec tri cal man ual 11-1

12. Ac ces sories

o Ba sic set ting thermo reg u la tor

o Dig i tal timer

o Spare parts list Dry ing Hop pers ST 25 - ST 6400

o _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

o _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

STT 110 / STT 160

506-2MS

Ac ces sories 12-1

Ba sic set ting thermo reg u la tor

This in for ma tion is in tended to be used only by Ster ling ser vice per son nel
and trained per son nel au tho rized by Sterling.

»

Other per sons are not per mit ted to mod ify or re pair the equip ment.

STT 110 / STT 160

Set tings, if tem per a ture is dis played in C°

Code

C111 0 0 0 0

C112 2 0 0 0

C113 0 5 3 4

C114 1 0 0 1

SPL 0 0 4 0

SPH* 0 1 4 0

* with re turn air coo ler in use: 0 1 8 0

Pa ram e ter Pa ram e ter set 1

AL1 20.0

HYS1 1

rASd 5.0

Set tings, if tem per a ture is dis played in F°

Code

C111 0 0 0 0

C112 2 0 3 0

C113 0 5 3 4

C114 1 0 0 1

SPL 0 1 0 4

SPH* 0 2 8 4

* with re turn air cooler in use: 0 3 5 6

Pa ram e ter Pa ram e ter set 1

AL1 68.0

HYS1 1

rASd 19.0

506-2MS

Ac ces sories 12-2