Syre-stinkskabe GB - Flipbook - Side 10
FUME CUPBOARDS DESIGNED FOR WORK
WITH HYDROFLUORIC ACID (HF)
COMMONLY REFERRED TO AS: ZAFE 81 HYDROFLUORIC ACID OR ERGO
ZAFE 83 HYDROFLUORIC ACID
DEFINITION
CONSIDERATIONS
Work is conducted with Hydrofluoric Acid (HF), and high
temperatures may occur.
Choosing this fume cupboard means selecting equipment
prepared for work with Hydrofluoric Acid and high heat. Since the work involves handling strong acids and high temperatures, only a ceramic worktop is suitable. We recommend
using a ceramic worktop, as the high heat and strong acid
concentration can severely damage other materials.
CONSTRUCTION OF THE FUME CUPBOARD
- The interior of the fume cupboard is lined with polypropylene.
- The fume cupboard is equipped with a ceramic heat
shield above the worktop to protect the cabinet from
heat radiation.
- The exhaust duct is made of polypropylene.
- Metal parts are coated with technical Teflon polytetrafluoroethylene (PTFE) and are therefore black.
- The worktop material is made of ceramic.
- The front window is made of transparent plastic material (PVC-U). Frequent replacement of the front window
should be expected, depending on usage.
- The front window is top-hinged with a wire.
- There is temperature measurement inside the fume
cupboard.
- The fume cupboard must be ventilated with an extra high
volume, and it is recommended that the airflow speed be
tripled compared to a standard fume cupboard.
- It is recommended to deliver the fume cupboard at a
fixed height, avoiding height adjustment, as this requires highly chemical-resistant flexible piping.
- Fittings can be Teflon-coated, depending on requirements.
BROENLAB:
Standard: Can withstand most conditions, color 2700.
Special: Satin chrome TI69. Chrome/silver-colored, suitable for e.g., acetone.
Special: Chemicoat TI55. Teflon coating. Expensive solution.
ARMALAB:
Standard: Epoxy-coated with a smooth surface. Can tolerate acids to a certain extent.
Optional: PP (polypropylene) is standard for the back
wall. Special PP is used for fitting rail mounting.
10 | Zystm 2025
MAINTENANCE AND INSPECTION
If the customer requires the fume cupboard to be certified, the applicable standard will be EN14175 part 7 which
covers the testing and certification of acid-resistant fume
cupboards. Additionally, Danish regulations require that
the fume cupboard undergoes a tracer gas test according
to DS 457 in the laboratory before it is put into use.
VEDLIGEHOLDELSE OG KONTROL
It is recommended that the fume cupboard be inspected
and serviced every 3-6 months, depending on its usage.
For safety reasons, it is crucial to regularly check mechanical parts, load-bearing components, and ventilation,
with at least the above-mentioned interval. Zystm offers
a service package specifically tailored for this type of
fume cupboard.
