Bronkhorst®
Instruction Manual ES-FLOW™
9.17.145E
49
4
Maintenance
For general (non-hygienic) applications, the ES-FLOW needs no regular maintenance if operated properly, with clean media,
compatible with the wetted materials, avoiding pressure and thermal shocks and vibrations. Units may be purged with a
clean, dry and inert gas or flushed with a non-aggressive and non-corrosive cleaning liquid.
Hygienic applications require periodic cleaning and/or maintenance. See further for more information.
In case of severe contamination, cleaning the inside of the device may be required.
Inexpertly servicing instruments can lead to serious personal injury and/or damage to the instrument or the system it is
used in. Servicing must therefore be performed by trained and qualified personnel. Contact your Bronkhorst representative
for information about cleaning and calibration. Bronkhorst has a trained staff available.
4.1
Cleaning
·
When ordered as a 3-A compliant instrument, the ES-FLOW™ is suited for hygienic (food processing) applications,
Clean-in-place (CIP) and Sterilization in Place (SIP).
·
For CIP procedures, a minimum flow velocity of 1.5 m/s through the ES-FLOW™ is recommended; this can be achieved
with water at a flow rate of 1500 ml/min.
·
The sealing surfaces of Tri-Clamp gaskets may require Clean-Out-of-Place (COP) cleaning (according to the instructions
of the seal manufacturer).
·
When the measuring tube gets clogged by highly viscous and/or sticky liquids, it can be cleaned manually, using a thin
channel cleaning brush before flushing it with a cleaning liquid..
The end user is responsible for validation of the cleaning procedure and results.
4.2
Calibration
The ES-FLOW is factory calibrated. Periodical inspection, recalibration or verification of the accuracy may be subject to
individual requirements of the end user.
Bronkhorst certifies that the instrument meets the rated accuracy. Calibration has been performed using measurement
standards traceable to the Dutch Metrology Institute (VSL).
