Anest Iwata DDP 120 B.TE Manual De Instrucciones página 76

DPS-70 C - DPS-70 CN DIAPHRAGM PUMPS
EN
10.4 TWO-WAY VALVE JOINT CONNECTION KIT - OPTIONAL
Ref. Description
for ALUMINIUM TYPE
1 PAINT REGULATOR
2 JOINT
3 T-JOINT
4 ELBOW UNION
for STAINLESS STEEL TYPE
1 PAINT REGULATOR
2 JOINT
3 T-JOINT
5 STREET UNION
6 UNION JOINT M-F
for ALL TYPES
7 SUB PLATE
8 BOLT WITH HEX. HOLE
9 PLATE
10 PRESSURE GAUGE
11 ELBOW UNION
12 TUBE
14 AIR REGULATOR
15 ELBOW
16 T-JOINT
17 UNION JOINT M-F
10.5 PAINT REGULATOR MAINTENANCE, DISASSEMBLY AND ASSEMBLY
IMPORTANT
When you disassemble main body, rising pipe and pressure gauge, apply sealing agent to each threaded
section to keep airtightness.
Whenever disassembling ball and seat of tungsten carbide, you have be sure to confirm that there is no
wear or damage. If there is any wear or damage, replace with new one.
10.6 DISASSEMBLING
1. Fully loosen handle set (ref.22), and remove bolt with hex. hole (ref.17), diaphragm cap (ref.19), spring stopper (ref.20),
adjusting spring (ref.18) and diaphragm.
2. Loosen jam nut (ref.7), and remove joint (ref.1), valve spring (ref.2), ball (ref.3), seat (ref.5) and packing (ref.6).
3. Fix hex. section of diaphragm bolt (ref.10), and remove hex. nut (ref.16), spring washer (ref.15), diaphragm stopper (ref.13),
O'ring (ref.14), diaphragm (ref.12) and diaphragm holder (ref.11).
4. If O' ring placed into joint is damaged or deformed, remove O'ring from joint.
10.7 ASSEMBLY
1. Check on each section if there are damage and foreign matter .
2. Fit diaphragm holder (ref.11), diaphragm (ref.12), O' ring (ref.14), diaphragm holder (ref.13) and spring washer (ref.15) into
diaphragm bolt (ref.10) and tighten hex. nut (ref.16). Tightening torque of hex. nut 9.8N-m.
3. Mount diaphragm section, adjusting spring (ref.18), spring stopper (ref.20), and diaphragm cap (ref.19) on main body
(ref.8), and evenly tighten bolts with hex. bolt (ref.17) diagonally.
4. Fit O' ring (ref.4) to joint (ref.1).
5. Fit packing (ref.6) and tungsten carbide seat (ref.5) to body (ref.8).
6. Fit valve spring (ref.2) and ball (ref.3) to joint (ref.1), and then fit joint (ref.1) to body (ref.8). Tightening torque of joint
14.7N-m.
7. Fix joint (ref.1) with jam nut (ref.7).
20
Qty.
ALL TYPES
1
ALUMINIUM TYPE
1
1
2
1
1
1
2
2
1
STAINLESS STEEL TYPE
4
1
1
2
1
1
2
1
1
DPS-70 C - DPS-70 CN DIAPHRAGM PUMPS
Fit tungsten carbide seat to main body so that tungsten carbide ball can be fitted on tapered side.
Do not forget to fit packing.
Wrong assembling can cause wrong movement of pointer of pressure gauge due to leakage from seat, failing
performance.
Pay attention to tightening torque when fitting joint (ref.1).
Too much tightening can damage main body.
Tightening torque of joint 14.7 N-m
When fitting joint, pay attention that tungsten carbide ball does not
slip out of the seat.
10.8 PAINT PRESSURE REGULATOR TROUBLESHOOTING
PROBLEM CAUSE
Not properly seated or deposits by foreign.
matter
THE POINTER OF
PRESSURE GAUGE
Wear or damage on seat.
OVERTAKES
Wear and damage on ball.
MAX. PRESSURE
Seat packing. (ref. 6) damaged
Loose joint. (ref. 1)
Loose bolt with hex. Hole (ref. 17)
PAINT LEAKS
Loose hex. nut. (ref. 16)
OUTSIDE
Diaphragm damaged. (ref. 12)
O ring damaged. (ref. 4)
Primary pressure is too low.
SECONDARY
Failure of pressure gauge. (ref. 24)
PRESSURE
DOES NOT RISE
Paint hardened in rising pipe. (ref. 23)
PRESSURE IS
Damage to valve spring (ref. 2)
UNSTABLE
Spare parts marked by [#] must be ANEST IWATA original items. If not, it can cause failure.
EN
SOLUTION
Clean and assemble again.
Replace tungsten carbide seat (ref. 5) [#]
Replace tungsten carbide ball (ref. 3) [#]
Replace packing (ref. 6) [#]
Tighten.
Tighten.
Tighten.
Replace diaphragm. [#]
Replace O ring. [#]
Raise primary side pressure.
Replace pressure gauge.
Clean paint out.
Replace valve spring. (ref. 2) [#]
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