8
Problems and remedies
Contact and ask the shop which sold it to you regarding
☆
marked items.
Wrong remedies can cause insu icient per ormance.
Problems
Causes
Remedies
Secondary pressure rises
too much.
1. Not properly seated, or oreign matter
2. Wear or damage on the seat
3. Wear and damage on the stem.
4. De ormed diaphragm
1. Clean and assemble again.
2. Replace. Seat (No.6)
3. Replace. Stem
（
No.5
）
4. Replace. Diaphragm
（
No.10
）☆
Paint leaks outside.
1. Loose the joint (No.7), plug (No.2)
2. Loose the hex socket bolt with washer (No.1, 25)
3. Loose the hexagon nut (No.15)
4. Damage to the diaphragm (No.10)
5. Damage to the O ring (No.4, 11)
1. Tighten or application o glue.
2. Tighten.
3. Tighten.
4. Replace. Diaphragm
（
No.10
）☆
5. Replace. O-ring
（
No.4, 11
）
Secondary pressure does
not rise.
1. Low primary pressure.
1. Raise primary side pressure.
Pressure is unstable.
1. De ormed Diaphragm
（
No.10
）
1. Replace. Diaphragm
（
No.10
）☆
※
The number in parentheses
（ ）
shows the number o parts lists.
Parts list
Model
FCV-5-R1 -R4 -R8
No.
Parts name
Qty
1
Hex socket bolt with washer
4
4
4
2
Plug
1
1
1
3
Circulation base
1
1
1
★
4
Ｏ
-ring
1
1
1
★
5
Stem
1
1
1
★
6
Seat
1
1
1
7
Joint
2
2
2
8
Body
1
1
1
9
Diaphragm holder [Stainless steel]
1
1
1
★
10
Diaphragm
1
1
1
★
11
Ｏ
-ring
1
1
1
12
Diaphragm stopper [Alminum]
1
1
1
13
Hexagon nut
1
1
1
14
Diaphragm cap
1
1
1
15
Piston
1
1
1
16
Diaphragm cap 2
1
1
1
★
17
Ｏ
-ring
1
1
1
※
18-1
Piston guide R1
1
-
-
※
18-2
Piston guide R4
-
1
-
※
18-3
Piston guide R8
-
-
1
※
19-1
Piston R1
1
-
-
※
19-2
Piston R4
-
1
-
※
19-3
Piston R8
-
-
1
★
20
Diaphragm 2
2
2
2
21
Head
1
1
1
22
Stay (
accessories
)
1
1
1
23
Hex socket bolt with washer
4
4
4
24
Hex socket bolt with washer
(
accessories
)
2
2
2
25
Hexagon socket plug
1
1
1
access
ories
Instruction manual (this book)
1
1
1
Joint (same as No.7)
1
1
1
※
Components No. 18 and No. 19 di er depending on the model.
Never use commercial or other parts instead o ANEST IWATA
original spare parts.
When unpacking, con irm that there is no damage or shortage.
I there is damage or shortage during transportation, do not use
the equipment and contact the shop which sold it to you.
Code No.04008250
★
indicates consumable parts
4
