IMT105-10
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105 Series
Temperature Controls
Types B105, E105
U N I T E D E L E C T R I C
C O N T R O L S
Installation and Maintenance
Instructions
Please read all instructional literature carefully and thoroughly before starting. Refer to the final page for the listing of Recommended
Practices, Liabilities and Warranties.
IMT105-10
For remote mounting, fully immerse the bulb and 6” of capillary in the control
zone. It is generally desirable to place the bulb close to the heating or cooling
source in order to sense temperature fluctuations quickly. Be sure to locate
the bulb so that it will not be exposed to temperatures beyond the instrument
range limits.
WIRING
DIsconnecT all supply cIrcuITs BeFore wIrIng unIT.
elecTrIcal raTIngs sTaTeD In lITeraTure anD on naMeplaTe
MusT noT Be eXceeDeD. oVerloaD on a swITcH can cause
FaIlure on THe FIrsT cycle. wIre unITs accorDIng To
naTIonal anD local elecTrIcal coDes. MaXIMuM recoMMenDeD wIre
sIZe Is 14 awg.
For proper TerMInal connecTIons, a FlaTHeaD screwDrIVer
wITH a 0.16” wIDe BlaDe MusT Be useD To aVoID DaMagIng
TerMInal Block.
remove the two screws retaining the cover and cover gasket. a 1/2” npT
conduit connection is located on the left side of the enclosure. connect
conduit to the enclosure and wire directly to terminals according to local and
national electrical codes. a green grounding screw is provided.
Part II - Adjustments
Tools Needed
phillips head and Flathead screwdriver
5/64” allen wrench
For seT poInT aDjusTMenTs anD recalIBraTIon, connecT
conTrol To a calIBraTeD TeMperaTure source anD sTaBIlIZe
unIT.
remove adjustment cover on top of unit. Temperature setting is achieved by
turning the knob and pointer against a reference scale.
re-InsTall aDjusTMenT coVer aFTer coMpleTIng aDjusT-
MenTs.
controls are factory calibrated for maximum accuracy at the midpoint of the
scale.
To recalibrate, turn knob and pointer to desired set point. If the actual tem-
perature and set point temperature do not agree, loosen 5/64” allen set
screws on adjustment knob and align pointer to indicate actual temperature.
retighten allen set screws, and adjust knob and pointer to set point if neces-
sary.
GENERAL
Type B105 (Immersion Stem)
Temperature variations are sensed by a liquid filled sensor which expands
or contracts against a bellows which in turn actuates or deactuates a snap-
action switch at a predetermined set point.
Type E105 (Bulb & Capillary)
Temperature variations of a liquid filled sensing bulb are hydraulically trans-
mitted to a bellows which either actuates or deactuates a snap-acting switch
at a predetermined set point.
MaXIMuM TeMperaTure Is THe HIgHesT TeMperaTure To
wHIcH a sensIng eleMenT May Be occasIonally eXposeD
To wITHouT aDVersely aFFecTIng seT poInT calIBraTIon
anD repeaTaBIlITy. MaXIMuM TeMperaTure lIMITs sTaTeD In
lITeraTure anD on naMeplaTe MusT neVer Be eXceeDeD, eVen By
TeMperaTure oVersHooTs In THe sysTeM. occasIonal operaTIon oF
unIT up To MaX. TeMperaTure Is accepTaBle (e.g., sTarT-up, TesTIng).
conTInuous operaTIon sHoulD Be resTrIcTeD To THe DesIgnaTeD
aDjusTaBle range.
THIs proDucT Does noT HaVe FIelD replaceaBle parTs.
Part I - Installation
Tools Needed
screwdriver
adjustable wrench
MouNTING
InsTall unIT wHere sHock, VIBraTIon anD TeMperaTure F
lucTuaTIons are MInIMal. Do noT MounT unIT In aMBIenT
TeMperaTures eXceeDIng puBlIsHeD lIMITs. 105 serIes
TeMperaTure swITcHes can Be MounTeD In any posITIon,
proVIDeD THe elecTrIcal conDuIT Is noT FacIng up. orIenT unIT so
THaT MoIsTure Is preVenTeD FroM enTerIng THe enclosure.
105 series remote and local mounted temperature controls can be surface
mounted in any position via two 1/4” screw clearance holes on the enclo-
sure. units can also be stem mounted using pipe thread connection. (see
Dimensional drawings).
For local MounTIng, always HolD a wrencH on THe TeM-
peraTure HousIng HeX wHen MounTIng unIT. Do noT TIgHTen
By TurnIng enclosure. THIs wIll DaMage sensor anD weaken
solDereD or welDeD joInTs.
