Description of the device
— English Servitec 35-95 with
— 18.12.2019 - Rev. A
Note!
It is not permitted to make any modifications to the hydraulic system or
the circuitry.
3.6 Residual risks
This device has been manufactured to the current state of the art. However,
some residual risk cannot be excluded.
Risk of burns on hot surfaces
Hot surfaces in heating systems can cause burns to the skin.
• Wear protective gloves.
• Please place appropriate warning signs in the vicinity of the device.
Risk of injury due to pressurised liquid
If installation, removal or maintenance work is not carried out correctly, there is a
risk of burns and other injuries at the connection points, if pressurised hot water
or hot steam suddenly escapes.
• Ensure proper installation, removal or maintenance work.
• Ensure that the system is de-pressurised before performing installation,
removal or maintenance work at the connection points.
Risk of injury due to heavy weight
The devices are heavy. Consequently, there is a risk of physical injury and
accidents.
• Use suitable lifting equipment for transportation and installation.
Risk of injury when upon coming into contact with glycol containing water
Contact with glycol containing water in plant systems for cooling circuits can
result in irritation of the skin and eyes.
– Use personal protective equipment (safety clothing, gloves and goggles,
4 Description of the device
4.1 Description
The device is a degassing and water make-up station for facility systems.
The following facility systems are applicable for the device:
• Facility systems with heating circuits.
• Facility systems with cooling circuits.
• Facility systems with solar circuits.
• Facility systems with process circuits.
The device fulfils two functions:
1. Degassing of water.
• Water from the facility system.
• Water from the make-up mains for the facility system.
It removes up to 90 % of the dissolved gases from the water. Malfunctions in the
facility system resulting from free or dissolved gases in the water are avoided.
2. Make-up with water for the facility system.
• Two make-up variants can be selected for the facility system.
– Magcontrol make-up variant: For facility systems with
expansion vessels.
– Levelcontrol make-up variant: For facility systems with
pressure maintaining stations.
The device provides the following safety features:
• Control of the pressure maintenance of the facility system
• Automatic make-up with water.
• No water circulation problems in the facility system.
• Reduction of corrosion damage by removal of oxygen from the
water.
Note!
The device can only be operated at water temperatures up to a
maximum of 90 °C.
Note!
Operation and functioning at high system
temperatures (>70°C):
If a vacuum is created, the boiling point of the medium reduces. This
property results in a change in volume of the medium in the vacuum
spray tube. If the medium boils, the pressure increases and counteracts
the vacuum created in the
spray tube. Thanks to this characteristic, the
type of degassing changes from vacuum degassing to thermal
degassing. If the medium is boiling, the solubility of gases is almost zero.
Moreover, a higher pump flow rate does not automatically result in a
higher vacuum (at temperatures >70°C).
4.2 Overview
The unit overviews are only examples. Structure and functionality is the same for
the devices below.
Servitec 35 – 60
Servitec 75 – 95
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