Safety¶
General¶
The purpose of this section is to familiarise the user with the main risks that can be encountered using XO-VAC+. It is not an exhaustive list.
Note
XO-VAC+ is for professional use only.
Warning
XO-VAC+ is a piece of complex scentific equipment. Users must familiarise themselves with the documentation before attempting to operate it.
Warning
The user is responsible for ensuring the safety of any test regimes carried out using XO-VAC+. XO-VAC+ is a pressure chamber and is only rated for pressures between 0kPa (vacuum) and atmospheric pressure. Careful consideration should be given to whether the test subject contains any substance which may be inflammable, vapourise, or transform to gaseous phase in a vacuum, The potential consequences of this include the risk of toxic gasses or smoke being ejected from the vacuum system directly into the laboratory environment, and/or the risk of serious explosion.
Danger to life - ATEX atmosphere: risk of explosions
XO-VAC+ is not designed to operate in ATEX environments (explosive atmospheres).
Danger to life - Electric shock
XO-VAC+ has a mains voltage electrical supply and contains sophisticated electronics.
- Always install XO-VAC+ in accordance with locally applicable regulations.
- Make sure that the local mains voltage and frequency are correct for XO-VAC+.
- Do not expose to water or operate in a humid or condensing environment.
- Only use 3-pin mains cables with properly connected protective earthing (earthed connector).
- Only use mains socket with earthing contact.
- Always connect the mains cable prior to all other cables to ensure continuous protective earthing.
- Ensure the device is safely integrated into a power supply which has appropriate safety cut-off features such as a circuit breaker.
- Do not remove covers or attempt to modify or repair the device.
Warning - Operating Conditions
XO-VAC+ cannot operate in condensing environments.
Warning - Hot surfaces
Parts of XO-VAC+ including the rear face may get hot during operation. Please ensure the device is operated well away from combustible materials.
Warning
Do not attempt to dissasemble, modify, or repair XO-VAC+.
Warning - Liquids
Liquids entering in contact with XO-VAC+ electronics can create life threathening electric shock hazard and serious damage to the equipment.
- Do not store liquids in close or open containers on top or inside of XO-VAC+
- Do not store liquids in proximity of XO-VAC+ (shelf, desks, etc.) that could fall ontop of XO-VAC+.
Warning - XO-VAC+ transport
Do not wheel XO-VAC+ out while its vacuum system is operating as shocks or bumps can damage the turbopump.
Warning
Always lock at least two caster wheels when XO-VAC+ is operated or left unattended. We recommend ensuring that all four wheels are locked whenever XO-VAC+ is stationary.
Warning
Always ensure that all four caster wheels of XO-VAC+ are in contact with the ground when XO-VAC+ is operated or left unattended.
Warning - Risk of serious injury due to falling objects
- Do not stack items on top of XO-VAC+
- Take particular care when transporting XO-VAC+
- Wear adequate PPE
Warning - Risk of serious injury due to falls
- Do not use XO-VAC+ as a climbing aid
Hardware¶
Thermal System¶
Danger - Fire & Electric Shock Hazards
Do not operate the XO-VAC+ Thermal System without the chamber being under vacuum!
Danger
Only vent the chamber if it is at temperatures 5 degrees above the water dew point and below 40C. You can determinee the current chamber temperatures by connecting to XO-VAC+.
Warning
Do not push or pull the shroud. Doing so will put extra mechanical stresses on elements of the Thermal System and will damage permanently.
Vacuum System¶
Note - General safety precautions for working with the vacuum pumps (based on Pfeiffer user manuals)
- Observe all applicable safety and accident prevention regulations
- Check that all safety measures are observed at regular intervals
- Do not expose body parts to the vacuum
- Always ensure a secure connection to the earthed conductor
- Never disconnect plug connections during operation
- Observe the shutdown procedures
- Keep non-vacuum lines and cables away from ot surfaces (>70C)
- Never fill or operate the vacuum pumps with cleaning agets or cleaning agent residues
- Do not carry your own conversions or modifications on the unit.
- Observe the unit protection class prior to installation or operation in other environments
- Observe statutory and local regulations regarding solvents handling
- Never operate an open or faulty vacuum pump. = Before carrying out any maintenance on the vacuum pumps, first allow the units to cool and disconnect them from the vacuum equipment.
- Disconnect the vacuum pumps from the mains prior to prior to every interventions, and wait an additional five seconds until the capacitors have discharged
- Implement suitable safety precautions where unintential vacuum pump venting can cause hazards (Power failures can cause unintentional venting)
Note - Foreseable improper use (based on Pfeiffer user manuals)
Misuse of the vacuum pumps invalidates all warranty and liability claims. Any use that is counter to the purpose of the product, whether intentional or unintentional, is regarded as misued, in particular:
- Pumping of corrosive media
- Pumping of explosive media
- Pumping radioactive or volatile media
- Pumping of gases that introduce an ignition source to the suction chamber
- Pumping of gases that contain impurities such as particles, dust or condensate
- Pumping of fluids
- Pumping of FPM-solubilizing media
- Pumping vapors from combustible liquids
- Pumping pressurized media (>atmospheric pressure)
- Pumping media that can condense or cause adhering deposits to form in the suction chamber
- Using the vacuum pumps below ground
- Using the vacuum pumps to generate pressure
- Using the vacuum pumps in systems in which sporadic loads and vibrations or periodic forces act on the units.
- Using the vacuum pump in strong electrical, magnetic or electromagnetic fields.
- Connection to devices with exposed live parts
- Connecting to sockets without eathing contact
- Using pipes to lift the vacuum pumps or XO-VAC+
Note - Risk of equipment damage
Do not operate the vacuum pumps with the XO-VAC+ main chamber door open.
Warning - Risk of injury through sharp edges
Turbopumps have components with very sharp edges (rotor and stator disks). Do not reach in the high vacuum flange.
Warning - Risk of turbovacuum pump being damaged
Pumping of gases with a higher molecular mass in the wrong gas mode can lead to de- struction of the pump. Contact Exobotics before using gases with molecular mass greater than 80.
Danger - Risk of injuries and vacuum pumps being damaged
Do not remove or dissassemble vacuum feedthroughs while the chamber is under vacuum. A sudden vent to ambient pressure will damage the vacuum pumps and can injure the operator.
Danger - Risk of explosion
Do not test pressurised containers in the XO-VAC+ vacuum chamber.
Warning - Damage to the turbovacuum pump and drive
Even after the mains power is switched off, the subsequently running pump delivers electric power to the electronic drive unit. There is a danger of electric body contact by premature separating the pump from the electronic drive unit.
- Never separate the electronic drive unit from the pump when the mains power is connected or the rotor is running.
- Do not remove the mains cable if the turbopump is still running.
Warning - Re-starting XO-VAC+ after extended storage periods
The XO-VAC+ turbovacuum needs to be serviced if it has not been operated for 4 years or longer. If it is the case, please contact Exobotics to arrange a service.
Warning
Do not try to force open the main door of the vacuum chamber. If the thumbscrew is removed and it cannot be easily opened, it means that the vacuum chamber is not at room pressure yet.
Danger from the turbopump being torn-off
In case of sudden blocking of the rotor, torques of up to 620 Nm can occur, which can lead with incorrect attachment to tearing the turbopump off. The energy released there- by can hurl the entire pump or fragments from their inside around the area. This can cause severest injuries (possibly resulting in death) and large property damage
- Do not detach the turbo pump from XO-VAC+
- Do not replace or remove fasteners attaching the turbopump to XO-VAC+
- Follow Exobotics instruction for the turbopump maintenance
Warning - Risk of high pressures in the exhaust lines
Danger of injury from bursting as a result of high pressure in the exhaust line. Faulty or inadequate exhaust pipes lead to dangerous situations (e.g. increased exhaust pressure). There is a danger of bursting. Injuries by flying fragments, the escaping of high presure and damae to the unit cannot be excluded.
- Regularly maintain XO-VAC+
- Do not modify the XO-VAC+ exhaust connection
Warning - Danger of poisoning due to toxic process media escaping the exhaust pipe
If XO-VAC+ is not fitted with an exhaust line, the vacuum pumps allows exhaust gases and vapors to escape freely into the air. There is a risk of injury and fatality due to poisoning in processes with toxic process media.
- Observe the pertinent regulations for handling toxic process media
- Safetly purge toxi process media via an exhaust line
- Use appropriate filter equipment to separate toxic process medi
Danger
The venting/purging gas pressure on the venting inlet is max 1.5 bar absolute.
Warning - Risk of high pressures in the exhaust lines
Parts of vacuum pump can reach high temperatures during operations. There is a risk of burning.
- Do not open XO-VAC+ back box or Vacuum Control box.
- Do not run XO-VAC+ with open back box or Vacuum Control box.
- Allow the vacuum pumps to cool down before carrying any work
Warning - Risk of burning on hot surfaces
The vacuum pumps can get hot during sustained operations. Allow time for the vacuum pumps to cool before touching them.
Emergency stop¶
In the event of an emergency or if XO-VAC+ has ceased responding, power to the thermal systems can be cut by pressing the red emergency stop button (see photo below) on the front panel of the device, or by turning the key to the off position. Power to the heating/cooling system and vacuum pumps will immediately be cut off, and the control systems will also be shut down. The vacuum pump system is on a separate power circuit and has automatic failsafes which will cut power in the event of overheat or fault. There is no manual release on the vacuum system as this must be released in a controlled fashion to avoid the risk of explosion by shock loading of the chamber.
Cables¶
Danger - Fire & Electric Shock Hazards
Do not use other D-Sub 25 cables than the ones provided. Using different specs of cables can create fire hazards and/or loss of performances.
Danger - Fire & Electric Shock Hazards
Always attach the D-Sub 25 cables with the connector mounting screws. A misinserted cable can create fire hazards and/or damage XO-VAC+.
Danger - Electric Shock Hazard
Do not hot plug (insert or remove) the cables while XO-VAC+ is powered on. There is an electric shock risk for the user and the XO-VAC+ can get damaged.
Fuses¶
Danger
Do not operate XO-VAC+ with mains power cables without fuses.
Note
Always replace the fuses with fuses having equivalent specification.
Danger
Only qualified personnel should change fuses.
PPE¶
Warning
Appropriate PPE should be worn whilst using XO-VAC+ to protect the user, the device, and the items under test. Safety and PPE requirements should be reviewed by the user depending on their test regime and environment. It is recommended to use clean gloves when handling components and materials within and around the vacuum chamber, in order to prevent contamination and/or damage to sensitive equipment.
Health¶
Warning
The DB25 Male to Male Cable and the DB25 Female to Female Cable can expose you to chemicals including phthalates, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov
Internet¶
Warning
The XO-VAC+ embedded server should not be directly exposed to the internet as it is not updated as often as a regular Windows PC.
