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5.1 Precautions for operation
1. Install the product perpendicular
Install the product perpendicularly on such a place where air likely gathers.
*Failure to follow this notice does not achieve
2. Before installing the product, remove foreign substances and scale from the piping
* Failure to follow this notice may prevent the product from functioning properly
* Failure to follow this notice may prevent the product from functioning properly
* Failure to follow this notice may prevent the product from functioning properly due to ingress of
foreign substance and scale into the product
foreign substance and scale into the product.
3. When installing the product to piping, tighten
tighten it beyond necessity.
*Failure to follow this notice transforms the body and cause malfunction.
*Failure to follow this notice transforms the body and cause malfunction.
4. Lead outlet side of the product to safety place in case water leaks.
ead outlet side of the product to safety place in case water leaks.
*Failure to follow this notice may contaminate surroundings.
*Failure to follow this notice may
1. Install stop valve (cock or gate valve) at inlet side of the
Install stop valve (cock or gate valve) at inlet side of the
product for maintenance and inspection.
product for maintenance and inspection.
2. There is a possibility of leakage by scale inside piping.
There is a possibility of leakage by scale inside piping.
Install the point of outlet side so that back flow to drain
ditch cannot happen as shown in the right figure
ditch cannot happen as shown in the right figure
6.2 Precaution for use
1. Do not touch the product directly with bare hand in case of high temperature fluid
Do not touch the product directly with bare hand in case of high temperature fluid
Do not touch the product directly with bare hand in case of high temperature fluid.
* Failure to follow this notice may cause
6.3 Troubleshooting
Trouble
Air cannot be
exhausted.
1. Floating valve [2] is stuck by foreign
Water outflows.
2. Floating valve [2] is damaged.
3. Float [6] is damaged and loses the
7.1 Warning for maintenance
Warning
6. Operating Procedure
does not achieve function of the product.
product, remove foreign substances and scale from the piping
product, remove foreign substances and scale from the piping.
to piping, tighten the hexagonal part of the body with wrench
side so that back flow to drain
may cause burns.
Cause
1. Stop valve at inlet side has been
Stop valve at inlet side has been
closed.
2. Piping pressure is above the
Piping pressure is above the
optimum level.
optimum level
Floating valve [2] is stuck by foreign
substance
Floating valve [2] is damaged.
Float [6] is damaged and loses the
specified function.
specified function.
Completely discharge the pressure inside of the product
Completely discharge the pressure inside of the product
Completely discharge the pressure inside of the product and piping before
disassembly or maintenance
or maintenance.
* Failure to follow this notice may result in injury due to residual pressure.
follow this notice may result in injury due to residual pressure.
follow this notice may result in injury due to residual pressure.
Caution
the hexagonal part of the body with wrench. Do not
Warning
1. Open the stop valve fully.
2. Reduce the piping pressure or replace
1. Disassemble the product and clean
2. Replace floating valve [2].
3. Replace float [7].
7. Disassembly
4
Stop valve
To drain
ditch
Remedy
Remedy
Open the stop valve fully.
the piping pressure or replace
the product with the model for high
the product with the model for high
pressure.
Disassemble the product and clean
floating valve.
Replace floating valve [2].
Replace float [7].
E PDT-198
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