SW APRIL 2021 WEB | Page 63

Solvent fumes are heavier than air and exposure levels can easily be reached working in pits or enclosed spaces . Always institute a ‘ buddy system ’ and use air fed face masks with attached line .
5 - Delivering solvent . Use a drum pump electric or hand operated with a flexible tube connection for delivering the solvent to the open end of the pipe or tubing to flush the internal surfaces . Using a fresh drum of ProSolv ® 5408e connect drum pump and the delivery tube to the end of pipe / tube to be cleaned using a pre-fitted screwed or compression fitting .
6 - Drainage and Testing . The drainage end of the pipe or tube should be fitted with a flexible tube into a tank or drain sump allowing samples to be taken in a glass bottle or tube at regular intervals to be sure when no particles or soils are being expelled . The colour of the solvent will change as oil and soluble contaminants are removed and flushing must continue until the flow is totally clear and water white .
7 - Post-flush . ProSolv ® 5408e solvent is volatile so will dry completely using an oil free airline or nitrogen supply connected to the end of the cleaned pipe / tubing .
8 - A wipe of the pipe / tubing surface at the inlet and outlet using solvent saturated lint free cloth completes the cleaning . If not connected immediately to other parts of the system enclose both ends of cleaned item to prevent recontamination .
Used ProSolv ® 5408e should not be reused for flushing but can be recovered for reuse by a simple distillation process . Removal from site should use licensed disposal companies .
Further information
ProSolv ® 5408e is not just flushing refrigeration pipeline systems , please visit our website https :// www . vapour-degreasing . com / prosolv5408e / for information about other applications . For more advice , please telephone us on + 44 ( 0 ) 20 8281 6370 or use our website contact form .
All products are supplied and supported by EnviroTech Europe Ltd . Manufactured in the United Kingdom and available on short delivery times through our dedicated team of distributors worldwide .
Telephone : + 44 ( 0 ) 20 8281 6370 Visit : www . envirotech-europe . com