GLYCOL TEMPERATURE & HYDRAULICS: 3

[wilbmanj]

GLYCOL TEMPERATURE & HYDRAULICS: What is the optimum operating temperature for CITGO Glycol FR-40XD when used as a hydraulic fluid in an elevator sysem? It is a water-glycol type of fire-resistant fluid formulated with diethylene glycol.

 

[MortenA]

It took me about 20 sec. and

http://www.google.com

to find this datasheet:

http://www.citgo.com/Products/Lubri...files/Hydraulic_Fluids_PDF/Glycol FR-40XD.pdf

Best Regards

(if the link dosnt work try google and use the key words CITGO and glycol. The 3. reference from the top did the job

 

[wilbmanj]

Thank you for taking the time to look for the answer to my question, but the question is still not answered. I have the same data sheet and it does not tell me what the optimum operating temperature for a glycol hydraulic system in an elevator should be. Does anyone out there know?

 

[MortenA]

OK the first one was maybe not ideal but maybe this one?

http://www.citgo.com/products/lubricants/lubricant_product_categories/msds/HF/262396.pdf

In sec. 7 it is clearly stated: Avoid extreme temperatures. Operating temperatures should be maintained as low as possible and should not exceed 66 deg C. There is no menitiong of a lower temperature but the freezing point is -30 deg C (sec 9)

Best Regards

Morten

 

[gianlucafoschini]

I don't know the optimum for CITGO Glycol FR-40XD but for Oughto SAFE 620 46 cSt the maximum is 50 °C. if the temperature goes over the movement of the elevator is still OK but the evaporation rate is not acceptable .

I'm still looking for some good idea to reduce the evaporation rate or to recover the vapor (condenser? filter?) If you have some good idea please let me know.

 

[FLA]

Unless you can get a totally sealed system, (and even if you do) some water loss is going to happen. The trick is, to have the system monitored for the water content, and the basic testing (R.A. - C.I.C.T. - and viscosity) to ensure the properties of th fluid will not allow degradation of your system components. Once you see the water "loss" you can get a good estimate of how often you should add (de-inonized) water to recharge the system and keep it operating at peak performance. Note: If you add more water to the system you should add whichever vapour-phase corrosion inhibitor your suppliers uses to keep the levels proper and avoid rusting oxidation etc.

I hope this helps a little.