Alfalaval Pressure Relief Valve User manual

2900-0109
ESE02426-EN1 2013-04
Original manual
Instruction Manual
Unique Sampling Valve - Accessories - Pressure Relief Valves

Table of contents
The information herein is correct at the time of issue but may be subject to change without prior notice
1. Safety .................................................................................................... 4
1.1. Important information ............................................................................. 4
1.2. Warning signs ..................................................................................... 4
1.3. Safety precautions ................................................................................ 5
2. Installation .............................................................................................. 6
2.1. Unpacking/delivery ............................................................................... 6
2.2. General installation ................................................................................ 6
2.3. Recycling information ............................................................................. 7
3. Operation ............................................................................................... 8
3.1. Operation .......................................................................................... 8
3.2. Troubleshooting ................................................................................... 9
3.3. Recommended cleaning ......................................................................... 10
4. Maintenance ........................................................................................... 11
4.1. General maintenance ............................................................................. 11
4.2. Dismantling the valve ............................................................................. 12
4.3. Assembly of valve ................................................................................. 12
5. Product information ................................................................................... 13
5.1. Technical data ..................................................................................... 13
5.2. Product range ..................................................................................... 14
6. Parts list and service kits ............................................................................ 16
6.1. Pressure Relief Valve - sizes 4 and 10 .......................................................... 16
6.2. Pressure Relief Valve - size 25 ................................................................... 18
3

1 Safety
Unsafe practices and other important information are emphasised in this manual.
Warnings are emphasised by means of special signs.
1.1 Important information
Always read the manual before using the valve!
WARNING
Indicates that special procedures must be followed to avoid serious personal injury.
CAUTION
Indicates that special procedures must be followed to avoid damage to the valve.
NOTE
Indicates important information to simplify or clarify procedures.
1.2 Warning signs
General warning:
Caustic agents:
4

1 Safety
All warnings in the manual are summarised on this page.
Pay special attention to the instructions below so that serious personal injury and/or damage to the valve are avoided.
1.3 Safety precautions
Installation:
Always read the technical data thoroughly. (See chapter 6 Parts list and service kits)
Always release compressed air after use.
Never touch the moving parts if the actuator is supplied with compressed air.
Never touch the valve or the pipelines when processing hot liquids or when sterilising.
Never dismantle the valve with the valve and pipelines under pressure.
Never dismantlethevalvewhenitishot.
Operation:
Never dismantle the valve with the valve and pipelines under pressure.
Never dismantlethevalvewhenitishot.
Always read the technical data thoroughly. (See chapter 6 Parts list and service kits)
Always release compressed air after use.
Never touch the valve or the pipelines when processing hot liquids or when sterilising.
Never touch the moving parts if the actuator is supplied with compressed air.
Always rinse well with clean water after cleaning.
Always handle lye and acid with great care.
Maintenance:
Always read the technical data thoroughly. (See chapter 6 Parts list and service kits)
Always release compressed air after use.
Never servicethevalvewhenitishot.
Never service the valve with the valve and pipelines under pressure.
Never stick your fingers through the valve ports if the actuator is supplied with compressed air.
Never touch the moving parts if the actuator is supplied with compressed air.
Transportation:
Always ensure that compressed air is released.
Always ensure that all connections is disconnected before attempt to remove from the installation.
Always drain liquid out of valves before transportation.
Always use pre-designed lifting points if available.
Always ensure sufficient fixing of the valve during transportation - if specially designed packaging material is available, it
must be used.
5

2 Installation
This instruction manual is part of the delivery. Study the instructions carefully.
The items refer to the parts list and service kits section.
2.1 Unpacking/delivery
Step 1
CAUTION
Alfa Laval cannot be held responsible for incorrect unpacking.
Check the delivery for:
1. Valve
2. Instruction manual
Step 2
Remove possible packing materials from the valve/valve parts.
Inspect the valve/valve parts for visible transport damage.
Avoid damaging the valve/valve parts.
2.2 General installation
Always read the technical data thoroughly.
See chapter 5.1 Technical data
CAUTION
Alfa Laval cannot be held responsible for incorrect installation.
Mount the Pressure Relief Valve on the lower connection as shown below.
1. Push down and hold the safety button
2. Pull back the handle
3. Mount the Pressure Relief Valve on the lower connection
on the Sampling Valve
1
2
3
2900-0110
6

2 Installation
This instruction manual is part of the delivery. Study the instructions carefully.
The items refer to the parts list and service kits section.
2.3 Recycling information
• Unpacking
- Packing material consists of wood, plastics, cardboard boxes and in some cases metal straps.
- Wood and cardboard boxes can be reused, recycled or used for energy recovery.
- Plastics should be recycled or burnt at a licensed waste incineration plant.
- Metal straps should be sent for material recycling.
• Maintenance
- During maintenance, oil and wearing parts in the machine are replaced.
- All metal parts should be sent for material recycling.
- Worn or defective electronic parts should be sent to a licensed handler for material recycling.
- Oil and all non-metal wearing parts must be dealt with in accordance with local regulations.
•Scrapping
- At the end of use, the equipment should be recycled according to the relevant, local regulations. As well as the equipment
itself, any hazardous residues from the process liquid must be considered and dealt with in a proper manner. When in doubt,
or in the absence of local regulations, please contact your local Alfa Laval sales company.
7

3Operation
Study the instructions carefully and pay special attention to the warnings!
Ensure that the valve operates smoothly.
The items refer to the parts list and service kits section.
3.1 Operation
Always read the technical data thoroughly.
See chapter 5.1 Technical data
CAUTION
Alfa Laval cannot be held responsible for incorrect operation.
Danger of burns!
Never touch the valve or the pipelines when processing hot liquids or when sterilising.
The Pressure Relief Valve is used to ensure that the temperature is at the right level when performing steam sterilisation on
the Sampling Valve.
1. Single Seat: Set the actuator to closed position
Double Seat: Set the actuator to seat lift/steam position.
2. Mount a hose on the steam outlet nozzle to ensure that the
steam is led away.
3. Supply steam to the upper connection of the Sampling Valve
(2.5-3.5 bar)
4. When steam appears from the steam outlet nozzle, then
leave the steam on for 2 minutes.
5. Shut off the steam supply.
6. Pull the quick release handle to ensure that no steam
pressure is present in the sampling valve.
7. The Sampling Valve is now clean and ready to take a sample.
We recommend that the Sampling Valve is steam sterilised
after a sample has been taken.
A. Steam inlet
B. Non Return Valve
C. Pressure Relief Valve
D. Quick release of steam
E. Steam outlet nozzle.
Be careful! 2900-0111
A
B
C
D
E
8

3Operation
Study the instructions carefully and pay special attension to the warnings.
Ensure that the valve operates smoothly.
The items refer to the parts list and service kits section.
3.2 Troubleshooting
NOTE!
Study the maintenance instructions carefully before replacing worn parts.
Problem Cause Repair
O-ring worn or damaged Replace o-ring
Steam leakage Membrane worn or damaged Replace membrane
Steam pressure too low Ensure that the supplied steam pressure
is above 2 bars
No steam at nozzle outlet
Blockage of the Pressure Relief Valve Inspect the Pressure Relief Valve and
ensure that nothing is obstructing the
valve
Steam pressure too low Ensure the the supplied steam pressure
is above 2 bars
Steam temperature is below 120 °C at
the Sampling Valve The Pressure Relief Valve opens too early
Inspect the Pressure Relief Valve and
ensure that nothing is obstructing the
valve
9

3Operation
Study the instructions carefully and pay special attention to the warnings!
Ensure that the valve operates smoothly.
The items refer to the parts list and service kits section.
3.3 Recommended cleaning
Step 1
Always handle lye and acid with great care.
Caustic danger!
Always use
rubber gloves!
Always use
protective goggles!
Step 2
Never touch the valve or the pipelines when sterilising.
Danger of burns!
Step 3
Pay special attention to the warnings!
Step 4
Examples of cleaning agents:
Use clean water, free from chlorides.
1. 1% by weight NaOH at 70 °C
1kgNaOH +100 l water =Cleaning agent.
2.2 l
33% NaOH +100 l water =Cleaning agent.
2. 0.5% by weight HNO3at 70 °C
0.7 l
53% HNO3+100 l water = Cleaning agent.
Step 5
1. Avoid excessive concentration of the cleaning agent.
2. Adjust the cleaning flow to the process.
3. Always rinse well with clean water after cleaning.
NOTE
The cleaning agents must be stored/disposed of in accordance
with current regulations/directives.
Always rinse!
Clean water Cleaning agents
10