Fyrewash F4

Efficient Gas Turbine Compressor Cleaning HIGHLY BIO-DEGRADABLE WATER BASED DETERGENT FOR ONLINE & OFFLINE COMPRESSOR WASHING

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PRODUCT DESCRIPTION

FYREWASH® F4 was developed to give the maximum possible cleaning efficiency 
and effectiveness from a non-solvent chemical.
Rochems R&D department have developed this product using state of the art 
technology, resulting in a non-hazardous, user-friendly and biodegradable 
water-based cleaner. 
FYREWASH® F4 sets the standard against which the performance and costeffectiveness of all other true non-solvent water based gas turbine cleaners can 
be judged.
FYREWASH® F4 is a highly biodegradable product, according to OECD 301-A 
test and has no cloud point for complete temperature stability throughout the 
compressor.
FYREWASH® F4 meets all major OEM’s specification requirements world-wide 
and have a high temperature stability.

APPLICATION

FYREWASH® F4 can be used with any on-line/off-line injection system but for 
optimum cleaning results and economic usage of chemicals, Rochem offers a 
full range of patented manual or fully automatic atomising injection systems to 
suit any engine type.

ON-LINE CLEANING

Is normally performed by mixing one part FYREWASH® F4 concentrate with four 
(4) parts of water into a stable solution. Use demineralised water as specified by 
the engine manufacturer, typically <11μS/cm. The volume of chemical solution 
needed per wash and the optimum cleaning frequency will depend upon 
engine size, operating environment and fouling tendency. It is recommended 
that a post rinse is performed to ensure that the nozzle system is cleaned and 
ready for next operation.

Off-line, cra nk washing

Concentrated FYREWASH® F4 is normally mixed with four (4) parts of good 
quality water. FYREWASH F4-Super Concentrate is to be mixed in a 1:19 
dilution. The solution is injected at cranking speed, allowed to soak for 20 to 30 
minutes then thoroughly rinsed off at cranking speed with good quality water 
acceptable to the engine manufacturer. FYREWASH® F4 can be used without 
dilution for offline cleaning, providing a superb cleaning result for heavily 
fouled compressors.

Antifreeze

Add antifreeze below +10°C, FYREWASH® F4 is compatible with Methanol, 
Propylene Glycol, Ethylene Glycol. Rochem manufacture a superior freeze point 
depressant, Rochem FPD, please contact local office for further information.


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