AMOT 4103D User manual

Temperature Valve for Static Bearings
Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2 Page 1
www.amot.com
Typical applications
• Monitors medium to large stationary
bearings
• Responds to high temperatures caused by:
- Tight, worn or out-of-round bearings
- Cracked or broken shafts
- Power or compressor cylinder overload
- Tight packing glands
- Torsional vibration
- Lack of lubrication
• Can be applied to liquid systems by installing in
an AMOT 6721L Well
• For larger moving bearing applications,
refer to model 4102 temperature detectors
datasheet located at www.amot.com
Key features and benets
• Provides early warning of problems - avoids high
cost bearing failures
• Instant response to excessive bearing
temperatures
• Use with oil, air or gas
• Compact design - easy, low cost installation
• Minimal maintenance - low cost of ownership
Model 4103D
Temperature Valve
Accreditations available
• PED Suitable for Group 1 & 2 liquids
(Ensure materials are compatible)
Model 6710X Spare
Fuse Rod
Model 4103M Miniature
Temperature Valve
Model 7280X Spare
Fuse Rod

Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2 Page 2
Contents
Overview ........................................................................... 3
Operation .......................................................................... 3
Typical Application .............................................................. 3
Installation Design Considerations ........................................ 4
Spacers ...................................................................... 5
Adapters ..................................................................... 5
Thermowells ................................................................ 5
Valve Characteristics ........................................................... 6
Installed depth and fuse rod length ................................. 6
How to Order ..................................................................... 7
Specication ...................................................................... 8
Dimensions ........................................................................ 8
Maintenance and Service Parts ............................................. 9
How to order replacement fuse rod assemblies ................. 9
Replacement fuse rod assembly model number structure ... 11
Contact ............................................................................. 12
A Warning indicates a hazardous situation that, if not avoided, could
result in death or serious injury to personnel. The text of the warning
describes the hazard and details of the precautions that must be
applied before the step of the procedure is carried out.

Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2 Page 3
Overview
AMOT Model 4103D Temperature Valves and Model
4103M Miniature Temperature Valves are ideal for
use on medium and high speed engines. The valves
initiate a warning or shutdown upon a sudden
temperature rise in critical machine parts caused
by tight, worn or out-of-round bearings, tight
packing glands, cracked or broken shafts, torsional
vibration, power or compressor cylinder overload,
lack of lubricant ow and many other sources.
The 4103M valves provide the same low cost
reliability for small bearings that have been eld
proven by their larger counterparts (Model 4103D)
in larger stationary bearing applications.
Operation
The range of 4103 temperature valves provides a
reliable sensor, which will trip upon temperature
rise.
The valves have a stainless steel body containing
a normally closed valve sealed with a Viton ball.
The temperature sensing portion is a thin lm of
eutectic alloy located near the tip of the fuse rod
assembly. The eutectic alloy, less than 0.01 mm3in
volume, secures a spring-loaded fuse rod until the
temperature at the sensing end of the rod melts the
alloy. The fuse rod is then instantly released and
allows the spring-loaded rod to unseat the Viton
valve ball.
A stainless steel ball is an optional item for use with
lube oil as the control medium if high pressures
are to be encountered. Generally, the standard
Viton is recommended for use with air, gas or lube
oil control systems because it provides a leak-tight
seal.
Typical Application
Figure 1
Do not heat unrestrained fuse rod assemblies.
They re with sufcient force to cause injury.
Failure to restrain or aim the fuse rod in a safe
direction can lead to serious bodily injury.

Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2 Page 4
Installation Design Considerations
• AMOT Model 4103 temperature valves are the
basic sensing units in a safety system and must
be tied into the system through connecting
tubing.
• Not recommended for installation where oil may
leak along the unsealed fuse rod shaft.
• Air/gas systems are more versatile and will give
faster response than an oil pressured system.
Oil is used in many systems within an engine as
shown in gure 1.
• Connecting tubing should be ” O.D. Close-
tee each sensing device to the control pressure
line and pipe them in series with the pressure
sensing valve being the last component in
the line. Care should be taken not to over
tighten the tting in the VENT port since it may
interfere with the tripping action.
Model 4103D - gure 2
• Model 4103D valves can be installed by
themselves (gures 1 & 2), in adapters (gure
4) or in a well (gure 5).
• Control pressure source may be clean, dry air,
or a non-corrosive liquid such as lubricating oil
at up to 90 psi.
• Removal of one shim
12
changes the direction of
the vent port approximately 90° when the valve
is tightened. The shims may be removed as
necessary to obtain the required vent location.
• Care must be used to obtain the proper
relationship between the pin on the fuse rod
assembly and the valve ball
7
. Installed
depths (Table 1 on page 6) are available in ½”
increments from 1 ⅞” to 9 ⅞” and must be held
to within +/- ” when the unit is installed. To
accomplish this setting, use one or both of the
following methods:
- Air pressure - Install the valve in the mounting
hole and apply slight air pressure to the IN
port of the valve. Turn the valve into the hole
until it starts to leak at the VENT port, then
back off one turn and tighten in place with
locknut
6
.
- Gauge - Install the valve in the mounting hole
and thread it in until the gauge strikes the
” diameter fuse rod when inserted in the
VENT port. Turn the valve back out until the
gauge slides past the ” rod and seats fully,
with the small pin located in the gauge slot.
Remove the gauge and thread the valve in one
or two turns and tighten in place with locknut
6
.
Model 4103M - gure 3
• Control pressure source may be clean, dry air,
gas, or a non-corrosive liquid such as lubricating
oil at up to 60 psi. The use of gas may not be
desired in a hazardous location.
• When installing, allow at least ¼” of thread
engagement when the end of the fuse rod is at
the normal (untripped) position. To obtain the
proper relationship between the end of the fuse
rod assembly
7
and the valve ball
3
, use the
following method:
- Install the valve in the mounting hole and
apply slight air pressure to the IN port of the
valve. Turn the valve into the hole until it
starts to leak at the VENT port, then back off
one turn and tighten in place with locknut
5
.
Figure 2 - Model 4103D
Figure 3 - Model 4103M

Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2 Page 5
Spacers
AMOT Model 4103D valves are used where standard
metal thicknesses are held by machined surfaces.
The locknut
6
and spacer
11
(P/N: 6661)
arrangement permits installing the valve without
the used of a gauge in standard depths of 1 ” to
1 ” as follows:
Installed depth
mm inches
Nut plus 3 spacers 27.0 1”
Nut plus 2 spacers 30.2 1”
Nut plus 1 spacer 33.3 1”
Nut only 36.5 1”
No nut or spacers 39.7 1”
Adapters
Adapter
P/N
Length (L)
mm inches
6660L001 111 4 ⅜”
6660L002 63.5 2 ½”
6660L003 31.8 1 ¼”
6660L004 152.4 6”
6660L005 127 5”
6660L006 73 2 ⅞”
6660L007 117.5 4 ⅝”
6660L008 38.1 1 ½”
Example 6721L 1 15 Code description Comments
Basic model (A)
Basic model (A) 6721L Stainless steel, 3,500 psi
9859L 416 Stainless steel, 8,000 psi
Thread (B)
“X” “Z”
Thread (B) 0½-20 UNF ½ NPT 6721L ½-20 UNF ¾-14 NPT 9859L
1 ½-20 UNF ½ BSP (Tr) 6721L ONLY
Installed depth (C)
6721L 9859L
mm inches mm inches
Installed depth (C)
04 42.9 1”41.3 1 ⅝”
05 55.6 2”54.0 2 ⅛”
06 68.3 2”66.7 2 ⅝”
07 81.0 3”79.4 3 ⅛”
08 93.7 3”92.1 3 ⅝”
09 106.4 4”104.8 4 ⅛”
10 119.1 4”117.5 4 ⅝”
11 131.8 5”130.2 5 ⅛”
12 144.5 5”142.9 5 ⅝”
13 157.2 6”- -
14 169.9 6”- -
15 182.6 7”- -
16 195.3 7”- -
17 208.0 8”206.4 8 ⅛”
18 220.7 8”- -
19 233.4 9”- -
20 246.1 9”- -
Thermowells
Model 4103D can be with an optional thermowell.
Use the table below to select the unique
specication of your thermowell for your Model
4103D Temperature Valve.
Figure 4
Figure 5
Installation Design Considerations

Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2 Page 6
Table 1 - 4103D
Code
Installed depth and fuse rod
length
Minimum Maximum
mm inches mm inches
03 27.0 1 ”39.7 1 ”
04 47.6 1 ⅞” 57.2 2 ¼”
05 60.3 2 ⅜” 69.9 2 ¾”
06 73.0 2 ⅞” 82.6 3 ¼”
07 85.7 3 ⅜” 95.3 3 ¾”
08 98.4 3 ⅞” 108.0 4 ¼”
09 111.1 4 ⅜” 120.7 4 ¾”
10 123.8 4 ⅞” 133.4 5 ¼”
11 136.5 5 ⅜” 146.1 5 ¾”
12 149.2 5 ⅞” 158.8 6 ¼”
13 161.9 6 ⅜” 171.5 6 ¾”
14 174.6 6 ⅞” 184.2 7 ¼”
15 187.3 7 ⅜” 196.9 7 ¾”
16 200.0 7 ⅞” 209.6 8 ¼”
17 212.7 8 ⅜” 222.3 8 ¾”
18 225.4 8 ⅞” 235.0 9 ¼”
19 238.1 9 ⅜” 247.7 9 ¾”
20 250.8 9 ⅞” 260.4 10 ¼”
Table 2 - 4103M
Code
Installed depth and fuse rod
length
Minimum Maximum
mm inches mm inches
00 19.1 ¾” 27.0 1 ”
01 41.3 1 ⅝” 49.2 1 ”
02 47.6 1 ⅞” 55.6 2 ”
03 54.0 2 ⅛” 61.9 2 ”
04 60.3 2 ⅜” 68.3 2 ”
05 66.7 2 ⅝” 74.6 2 ”
06 73.0 2 ⅞” 81.0 3 ”
07 79.4 3 ⅛” 87.3 3 ”
08 85.7 3 ⅜” 93.7 3 ”
09 92.1 3 ⅝” 100.0 3 ”
10 98.4 3 ⅞” 106.4 4 ”
11 104.8 4 ⅛” 112.7 4 ”
12 111.1 4 ⅜” 119.1 4 ”
13 117.5 4 ⅝” 125.4 4 ”
14 123.8 4 ⅞” 131.8 5 ”
Valve Characteristics
Installed depth and fuse rod length

Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2 Page 7
Example 4103 M 02 A C 228 Code description Comments
Basic model (A)
Basic model (A)
4103D Base model for mounting thread and
valve port thread (B) = A, D, K, L ONLY
4103 Base model for mounting thread and
valve port thread (B) = M ONLY
Mounting thread and valve port thread (B)
Mounting thread Valve port thread
Mounting thread and
valve port thread (B)
A M14 X 2 NPT
Basic model
(A) = 4103D
ONLY. UK
ONLY
D ½-20 NF NPT
Basic model
(A) = 4103D
ONLY
K M14 X 2 BSP (Tr) Basic model
(A) = 4103D
ONLY. UK
ONLY
L ½-20 NF BSP (Tr)
M-24 NF ⅛ NPT
Installed depth/fuse rod length code (C)
Installed depth/fuse rod
length code (C) *For installed depth and fuse rod length codes available,
refer to Tables 1 and 2 on page 4.
Valve ball material (D)
Valve ball material (D) A Viton
B Stainless steel
Revision level (E)
Revision level (E) C
Trip temperature °F (F)
Trip temperature °F (F)
174 174°F 79°C
197 197°F 92°C
217 217°F 103°C
228 228°F 108°C
253 253°F 123°C
291 291°F 144°C
343 343°F 173°C
Customer special requirements (G)
Customer special requirements (G) -*** Made-to-order
How to Order
Use the table below to select the unique specication of your Model 4103 Temperature Valve.

Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2 Page 8
Specication
Metric units English units
Body material 416 Stainless steel
Sensing material Eutectic alloy
Valve ball material Viton or stainless steel
Rod body Brass
Trip temperature range 79°C - 173°C 174°F - 343°F
Maximum allowable temperature 173°C 343°F
Maximum control pressure 4103D 6.21 bar 90 psi
4103M 4.14 bar 60 psi
Tripped movement 8 mm ”
Net weight 4103D 0.2 kg ½ lb
4103M 0.1 kg ¼ lb
Dimensions
4103D 4103M
Dimensions - inches (mm)

Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2 Page 9
Maintenance and Service Parts (refer to diagrams on page 10)
Over time, exposure to foreign chemicals and
particulate matter as well as prolonged operation
at extreme conditions may reduce the effectiveness
of the temperature valve. At such time, AMOT
Temperature Valves can be restored to original
performance by replacing the fuse rod. Please
order a fuse rod assembly and the service
instructions using the part numbers, quantities and
descriptions given in the service parts table below.
AMOT recommends that the overall safety
system be checked MONTHLY for proper
functioning by simulating an unsafe condition.
AMOT recommends maintenance, including
visual inspections, at the major overhaul of
the engine or YEARLY if lacquering of the lube
oil is observed.
Excessive lacquering can cause sticking which
impairs operation. Unscrew the detector from the
mounting hole and remove fuse rod assembly with
a twisting motion. Hold it by the ends and visually
examine the eutectic alloy area for exposed alloy.
Visible alloy should be a clean llet around the two
brass sections of the fuse rod assembly. Look for
cracks in the brass. A stable fuse rod assembly
moves slightly showing no wear.
Fuse rod assemblies
5
7
(Model 4103D and Model
4103M respectively) should be replaced if the crimp
section becomes loose. The life expectancy of
fuse rod assemblies is ve (5) years, under normal
operating conditions and proper maintenance.
When a Model 4103 temperature valve trips, it
has detected excessive heat. Check for proper
operating temperature of the oil and check the
bearing for signs of distress to determine the source
of the heat.
AMOT designs and tests all its products to ensure
that high quality standards are met. For good
product life, carefully follow AMOT’s installation and
maintenance instructions; failure to do so could
result in damage to the equipment being protected
or controlled.
How to order replacement fuse rod assemblies
Replacement fuse rod assemblies are available
with all of the parts required to service your 4103
Temperature Valve.
In the event that a fuse rod needs to be replaced,
please order the fuse rod assembly and the service
instructions using the part numbers and quantities
given in the service parts table below.
Service parts
Ref no. Part no. Qty. AMOT part description Comments
5*Refer to table
on page 11* 1 Fuse rod assembly 4103D ONLY
7*Refer to table
on page 11* 1 Fuse rod assembly 4103M ONLY
- ISB-4103-001 1 4103D/M Installation
and Service Bulletin

Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2 Page 10
Maintenance and Service Parts Continued
How to order replacement fuse rod assemblies continued

Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2 Page 11
Example 7280X 02 T 228 Code description
Model code (A)
Model code (A) 6710X 4103D ONLY
7280X 4103M ONLY
Fuse rod length code (B)
Installed depth/fuse rod length code (B) *For fuse rod lengths available, refer to
Tables 1-2 on page 6.
Type (C)
Type (C) T Temperature
Trip temperature °F (D)
Trip temperature °F (D)
174 174°F 79°C
197 197°F 92°C
217 217°F 103°C
228 228°F 108°C
253 253°F 123°C
291 291°F 144°C
343 343°F 173°C
Maintenance and Service Parts Continued
Replacement fuse rod assembly model number structure
Use the table below to select the unique specication of your replacement fuse rod assembly.

Temp. Valve for Static Bearings - Models 4103D/M
Datasheet_4103_Temperature_Valve_FEB18_Rev2 Page 12
Contact
Americas Europe, Middle East and Africa
AMOT USA
8824 Fallbrook Dr.
Houston, TX 77064
USA
Tel: [phone]
Fax: [phone]
Email: customer[email protected]
AMOT UK
Western Way
Bury St. Edmunds
Suffolk, IP33 3SZ
England
Tel: [phone]
Fax: [phone]
Email: [email protected]
AMOT Germany
Rondenbarg 25
22525 Hamburg
Germany
Tel: [phone]
Fax: [phone]
Email: [email protected]
Asia Pacic
AMOT Shanghai
Bd. 7A, No. 568, Longpan Rd., Malu Jiading
Shanghai 201801
China
Tel: [phone]
Fax: [phone]
Email: [email protected]
www.amot.com