United Electric Controls 100 Series 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 Warrantees. For functional safety applications, please refer to the safety manual which can be downloaded
from www.ueonline.com
GENERAL
The 100 Series temperature switch utilizes either a liquid filled sensing
stem (immersion stem, direct mounting) or liquid filled sensing bulb
(bulb & capillary, remote mounting) to detect a temperature change. The
response at a pre-determined set point actuates a SPDT snap-acting
microswitch, converting the temperature signal into an electrical signal.
Control set point may be varied by turning the internal adjustment hex
(C100, F100) or reference dial (B100, E100) according to the procedures
outlined (See Part II – Adjustments).
MAXIMUM TEMPERATURE* STATED IN LITERATURE AND ON
NAMEPLATE MUST NEVER BE EXCEEDED, EVEN BY SURGES 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.
*Maximum Temperature - the highest temperature to which a sensing
element may be occasionally operated without adversely affecting set point
calibration and repeatability.
THESE PRODUCTS DO NOT HAVE ANY FIELD REPLACEABLE
PARTS.
Please refer to the product technical brochure for product specifications.
Product technical brochures may be found at www.ueonline.com.
Part i - installation
MouNTiNG
ALWAYS LOCATE UNITS WHERE SHOCK, VIBRATION AND
TEMPERATURE FLUCTUATIONS ARE MINIMAL. DO NOT MOUNT
UNIT IN AMBIENT TEMPERATURES EXCEEDING PUBLISHED LIMITS.
UNIT MAY BE MOUNTED IN ANY POSITION PROVIDED THE
ELECTRICAL CONDUIT IS NOT FACING UP. THE RECOMMENDED
MOUNTING POSITION IS VERTICAL (PRESSURE CONNECTION
FACING DOWN), SPECIFICALLY WHERE HEAVY CONDENSATION IS EXPECTED.
For remote mounting, mount the unit via the (2) 1/4" screw clearance
holes on the enclosure (See Dimensions on back page.) Fully immerse
the bulb and 6" 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.
ALWAYS HOLD A WRENCH ON THE TEMPERATURE HOUSING
HEX WHEN MOUNTING UNIT. DO NOT TIGHTEN BY TURNING
ENCLOSURE. THIS WILL DAMAGE SENSOR AND WEAKEN
SOLDERED OR WELDED JOINTS.
On models supplied with an external manual reset button, be sure to leave
sufficient finger space over the reset button for the operator to reset the
control.
WiRiNG
DISCONNECT ALL SUPPLY CIRCUITS BEFORE WIRING UNIT.
WIRE UNITS ACCORDING TO NATIONAL AND LOCAL ELECTRICAL
CODES. MAXIMUM RECOMMENDED WIRE SIZE IS 14 AWG. THE
RECOMMENDED TIGHTENING TORQUE FOR FIELD WIRING TERMINALS IS 7
TO 17 IN-LBS.
100 Series
Temperature Switch
Types B100, C100, E100, F100
SIL2
Certified
Tools Needed
Adjustable wrench
Flathead screwdriver
Hammer (for alternate wire knockouts)
ELECTRICAL RATINGS STATED IN LITERATURE AND ON
NAMEPLATE SHOULD NEVER BE EXCEEDED. OVERLOAD ON A
SWITCH CAN CAUSE FAILURE ON THE FIRST CYCLE.
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. Two cast-in
7/8" diameter knockouts for electrical conduit are located on the side and
rear of enclosure. These can easily be knocked out by placing the blade
of a screwdriver in the groove and tapping sharply with a hammer.
Connect conduit to the enclosure and wire directly to the switch terminals
according to local and national electrical codes. Bring the wires up to
terminals from the rear of the enclosure allowing enough slack so as not
to affect switch movement when making setting adjustments. The three
switch terminals are clearly labeled "common", "norm open", and "norm
closed". If lead wires are supplied, color coding is as follows:
Common (COM)
Normally Open (NO)
Normally Closed (NC)
A grounding screw and clamp (cast in symbol) is provided which meets a
35 lb. pull test. Keep the wire as short as possible to prevent interference
with the plunger and, if applicable, the optional adjustable deadband
switch wheel (option1519).
Part ii - Adjustments
NoTE: For set point adjustments and recalibration, immerse sensor
(immersion stem or bulb and 6" of capillary) in a calibrated temperature
source and stabilize unit.
Types C100 and F100
Remove cover. Switch has a hex adjustment screw inside enclosure (See
Figure 1). If switch transfer point differs from actual temperature, adjust
setting. To raise the temperature setting, turn the hex towards the left
(clockwise). To lower the temperature setting, turn the screw towards the
right (counter-clockwise). When making adjustments, do not exceed the
maximum temperature rating on nameplate.
Types B100 and E100 (with reference dial)
Controls are factory calibrated for maximum accuracy at the midpoint of
the scale.
To re-calibrate, turn dial to desired set point(See Figure 2). If the actual
temperature and set point temperature do not agree, turn hex adjustment
screw towards the left (clockwise) to raise and towards the right (counter-
clockwise) to lower temperature setting.
Types with Adjustable Deadband Switch (option 1519)
Types with option code 1519 incorporate a snap switch with integral
adjustment wheel. Turning this wheel raises or lowers the temperature
rise set point. The fall set point remains constant. To use the adjustable
deadband switch:
To increase deadband, turn the adjustment wheel left. This increases the
rise set point while keeping the fall set point constant.
Consult UE for additional information.
IMT100-07
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
Manual Reset option 1530
SPDT
Violet
Blue
Black
3/16" open end wrench
iMT100-07
Tools Needed