MIYAWAKI ER120 User manual

 
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OPERATING MANUAL
FOR
BELL MIGHTY STEAM TRAP
MODEL:ER120
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INVERTED BUCKET STEAM TRAP

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SAFETY
The following warnings and cautions are shown
at appropriate places in this manual.
WARNING
Failure to observe this type of
precaution may lead to serious
injury or death.
CAUTION
Failure to follow this type of
precaution can lead to injury or
damage to equipment and
property.

S No. on the name plate of our product indicates a manufacturing date.
Indicating method of S No.
S.No. □□□□
indicates a day
indicates a month
indicates a year
Example of indicating a year
03 →200313 →2013
Method of indicating a month
Mark
Month
Mark
Month
Mark
Month
Mark
Month
1
January
4
April
7
July
X
October
2
February
5
May
8
August
Y
November
3
March
6
June
9
September
Z
December
Method of indicating a day
Mark
Day
Mark
Day
Mark
Day
Mark
Day
1
1
9
9
H
17
Q
25
2
2
A
10
J
18
R
26
3
3
B
11
K
19
S
27
4
4
C
12
L
20
T
28
5
5
D
13
M
21
U
29
6
6
E
14
N
22
V
30
7
7
F
15
O
23
W
31
8
8
G
16
P
24
(Example)
In case that S.No. is 0316, the manufacturing date is January 6, 2003
In case that S.No. is 13XM, the manufacturing date is October 21, 2013
8
7. S No.
The S. No. is indicated on the side of the cover.
S.No. 
Represents the day.
Represents the month.
Represents the year. (lower two digits of the
year in the Western calendar)
Month designation system
Symbol Month Symbol Month Symbol Month Symbol Month
1 1 4 4 7 7 X 10
2 2 5 5 8 8 Y 11
3 3 6 6 9 9 Z 12
Day designation system
Symbol
Day
Symbol
Day Symbol Day Symbol Day
1 1 9 9 H 17 Q 25
2 2 A 10 J 18 R 26
3 3 B 11 K 19 S 27
4 4 C 12 L 20 T 28
5 5 D 13 M 21 U 29
6 6 E 14 N 22 V 30
7 7 F 15 O 23 W 31
8 8 G 16 P 24
Example of serial number designation
0991 → Sep. 1, 2009 19XM → Oct. 21, 2019
8
S No. on the name plate of our product indicates a manufacturing date.
The following 4-digit or 9-digit ’S.No.' is displayed on the product.
●For 4-digit display
S.No. □□□□
�
Represents the day.
Represents the month.
Represents the year. (last two digits of the
year according to the Western calendar)
●For 9-digit display
S.No. □□□□□□□□□
�
MIYAWAKI identification number
Represents the month.
Represents the year. (last two digits of the
year according to the Western calendar)
Month designation system
Month 1 2 3 4 5 6 7 8 9 10 11 12
Symbol 1 2 3 4 5 6 7 8 9 X Y Z
Day designation system
Day 1 2 3 4 5 6 7 8 9 10 11 12
Symbol 1 2 3 4 5 6 7 8 9 A B C
�
Day 13 14 15 16 17 18 19 20 21 22 23 24
Symbol D E F G H J K L M N O P
�
Day 25 26 27 28 29 30 31
Symbol Q R S T U V W
Example of serial number designation
1711 → Jan 1, 2017
29XM → Oct 21, 2029
Example of serial number designation
17112C020 → Jan , 2017
29X05M050 → Oct , 2029

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CONTENTS
1．Introduction････････････････････････････････････ P.1
2．Dimensions and Specifications･･･････････････････P.1
3．Installations････････････････････････････････････P.2
4．Trouble Shooting･･･････････････････････････････P.3
5．Maintenance, Disassembling and Assembling･････P.4･5
6．Construction ････････････････････････････････････ P.6
★ Guidance for reading special product name・・・・・・・ P.8
7. Warranty・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ P.7

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1. Introduction
“Bell Mighty” inverted bucket Model ER120 Series are for multipurpose steam traps.
Especially for medium and large capacities.
This manual contains Installations, Trouble Shooting and Maintenance etc..
Never fail to read them to the end before using.
2. Dimensions and Specifications
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㻌 㻌
Size
Operating
Maximum
Material
Dimensions
Weight
Model No.
Connections
mm
Pressure
Temperature
of
(mm)
㻌
㻌 㻌
(inch)
(MPa)
℃
(
Ｆ
)㻌
Body
L
H1
H2
W
(kg)
ER120-8
Flanged
40(1_1/2)
0.05 to 0.8
220
(428)
Cast Iron
(FC250) 400
220 217 235 46
50(2)
65(2 1/2)
ER120-16
40(1_1/2)
0.05 to 1.6
50(2)
65(2 1/2)
03D NJIFP２
Inverted Bucket steam trap, inverted bucket Model ER120 Series are for multipurpose steam traps.
1

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3. Installations
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●Before installing the trap always blow off the sludge, scales, etc.
from the piping.
●This trap can be installed horizontally.
1) Install trap according to the direction of the arrow on the body.
2) Pipe the outlet condensate recovery piping at the lowest point of the steam using
equipment.
The trap should be installed that condensate will flow naturally into the trap.
3) When recovering the condensate outlet branch line should be piped from the steam trap
as the drawing A below.
Install a check valve on the downstream side on the trap.
4) If the trap is installed higher than the steam using machinery please install lift fitting
as drawing B below for better performance.
5) If installed on cylinder dryer please install lower than the lowest point of the cylinder
and minimize the horizontal piping.
Also do not insulate the piping.
6) The trap should be installed for easy maintenance. 200mm clearance is necessary for
disassembling the cover.
7) Upon start up inspect the followings.
a) Leak from the sealing of Body(1) and Cover(2) if leaking retighten the Cover Bolt(25)
and bolt(24) evenly.
b) Leak from the Plug(3),(4),(21),(22).
Re-tighten it.

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
！ &$87,216
Lift Fitting
One size smaller
Heat Exchanger
Steam Trap
Condensate Tank
Branch Line
Recovery Main
Check Valve
Drawing A
Drawing B
Steam Trap
2

- 3 -
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４．Trouble Shooting
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1)Inlet valve closed.
2)Over pressure
A)Check operating conditions reduce inlet pressure or change
the Super Discharger Unit to higher pressure.
3)Plugged Strainer
A)Disassemble Body Plug(3) and clean the strainer Screen(20)
4)Plugged air vent.
A)Disassemble Cover(2) clean the air vent on the Bucket(18).
B)To prevent further clogging scrabble wire can be installed.
5)Plugged orifice on Valve Seat(5) and/or Main Valve(6)
A)Disassemble Cover(2) clean the orifice on the Valve Seat(5)
and/or Main Valve(6).
6)Bucket out of place with valve closed.
A) Disassemble Cover(2) install Bucket(18) in correct place.
1)No condensate coming to the trap.
A)Leaking by-pass-valve or flanges upstream.
B)For cylinder dryers, broken or damaged siphon tubing.
C)Vacuum created on the upstream piping.
Install vacuum breaker upstream.
1)Normal Function
1)Loss or prime
A)Our ER Series
requires minimum hourly condensate
amount of 50kg/hr.
B)Close the upstream valve for a few minute and open the
valve gradually.
C)It is not recommended to install inverted bucket on super
heated lines and lines the pressure fluctuates.
2)Scales lodged between Valve Seat(5) and Main Valve(6) and/or
Pilot Valve(7).
A)Disassemble Cover(2) clean the Main Valve(6),
Valve
Seat(5) and/or Pilot Valve(7).
3)Worn Parts
Disassemble Cover(2) exchange the Main
Valve(6) Valve
Seat(5) and Pilot Valve(7).
4)Bucket out of place with valve opened.
Disassemble Cover(2) install Bucket(18) in correct place.
Disassemble Cover(2) install Bucket(9) in correct place.
A)Lack of capacity
Check the operating conditions, replace the trap with larger
capacity.
1)By installing on trap to several lines short circuiting will
occur.
A)Install trap to each line.
2)Steam locking-Cylinder Dryer.
A)Having steam formed inside the siphon tube, although
condensate is made in the cylinder dryer, the trap might
lack capacity.
Replace to another trap with larger capacity.
3)Steam locking-Submerged coils, and similar conditions:
A)By not having lift fitting structure steam will come to the
trap even though condensate formed.
Check the upstream piping and install lift fitting.
COLD
IS THE TRAP
COLD
OR
HOT
HOT
IS THE TRAP
DISCHARGING
CONTINUOUS
CONDENSATE
STEAM
IS THE STEAM
USING
EQUIPMENT
OBTAING
ENOUGH HEAT
IS THE TRAP
OPERATING
INTERMITENT
NO.
YES.
YES.
YES.
NO.
Inverted bucket steam trap has
intermittent operation function. It will
discharge and stop at certain cycles.
The improper operations will be:
No discharge, trap hot or cold.
Continuous discharge condensate or
steam.
NO.
YES.
NO.
3

- 4 -
5.Maintenance, Disassembling and Assembling

When disassembling a hot trap, be sure to release the pressure
inside to atmospheric pressure, and cool the trap before the work.
1. Disassemble Body Plug(3) from the Body(1) take out the Screen(20) check and clean.
2. Unscrew the Cover Bolt(25) and Bolt(24) take off the Cover(2), the internals（Valve Seat(5),
 Main Valve(6), Pilot Valve(7), C-Ring(8), Bonnet(9), Piston(10), Gland (11), Connector(12),
Connector Cap(13), Cap Pin(14), Eyebolt(15), Eyebolt Pin(16), U-Nut(17), Bucket(18),
Pin(31) ）will come together as the drawing C.
Drawing ＣDrawing Ｄ
3. Unscrew the U-Nut(19), the Bucket(18) will come off. Take off the Pin(31) and
Eyebolt Pin(16) the Eyebolt(15) will come off.
4. Firm the Cover(2) with a vise and with a box wrench disassemble the Bonnet(9).
5. Firm the Bonnet(9), unscrew the Bolt(23), take off the Gland(11), then the Pilot Valve
 Mechanism（Pilot Valve(7), Connector Cap(13), Cap Pin(14)）will come apart with the
Connector(12), Main Valve(6), C-Ring(8) Piston(10) will also come apart come apart.
Also disassemble the Valve Seat(5) with a wrench.
6. Clean and check the parts accordingly if all the parts are in normal condition,
 install in the opposite of disassembling. If parts are worn or defected please replace.
Especially the Pilot Valve(7), Main Valve(6) and Valve Seat(5) should be checked
thoroughly.

●
When reassembling always replace the Cover Gasket(26) to new one.
●Gasket (26) is fragile, so please handle it with care.
●Also Bolt(23),(24), (25) should be tightened evenly.
No.
Parts
Size
Shape
Clamp Torque
Tools
23
Bolt
13mm
Hexagon
15N
･
m (150kgf
･
cm)
Wrench
24
Bolt
19mm
Hexagon
79N
･
m (800kgf
･
cm)
Wrench
25
Bolt
17mm
Hexagon
30N
･
m (300kgf
･
cm)
Wrench
！ &$87,216
！ :$51,1*
4

- 5 -
4.Plug
19.Pipe
15.Eyebolt
22.Plug
2.Cover
10.Piston
5.Valve Seat
26.Gasket
27.Gasket
17.U-Nut
23.Bolt
24.Bolt
12.Connector
16.Eyebolt Pin
18.Bucket
1.Body
3.Plug
20.Screen
25.Bolt
9.Bonnet
13.Connector Cap
14.Cap Pin
21.Plug
11.Gland
29.Rivet
28.Name Plate
6.Main Valve
30.Plug
8.C-Ring
7.Pilot Valve
5

- 6 -
6.Construction
1. Body
2. Cover
3. Plug
4. Plug
5. Valve Seat
6. Main Valve
7. Pilot Valve
8. C-Ring
9. Bonnet
10. Piston
11. Gland
12. Connector
13. Connector Cap
14. Cap Pin
15 Eyebolt
16. Eyebolt Pin
17. U-Nut
18. Bucket
19. Pipe
20. Screen
21. Plug
22. Plug
23. Bolt
24. Bolt
25. Bolt
26. Gasket
27. Gasket
28. Name Plate
29. Rivet
30. Plug
31. Pin
6