SMC Networks HRSH100-A 20 Series - Page 52

HRX-OM-Q026
Chapter 3 Transport and Setting Up
3.5 Circulating Fluid Supply HRSH Series
3-32
◼ Ethylene glycol aqueous solution
When ethylene glycol aqueous solution is used, prepare the ethylene glycol
aqueous solution separately.
Refer to "3.2.2 Operation at low ambient temperature or low circulating fluid
temperature" for the concentration of the ethylene glycol aqueous solution.
To control the concentration of the ethylene glycol aqueous solution, a
densitometer is available (sold separately) from SMC.
Item
No
Remarks
Ethylene glycol aqueous solution 60%
HRZ-BR001
Dilute to with clean water (tap
water).
Densitometer
HRZ-BR002
－
◼ Piping of the overflow
Description
Port size
Specification
Automatic water fill
port
Rc1/2
Supply pressure: 0.2 to 0.5 MPa
Overflow port
Rc1
The piping should be ø25 mm or more and the length of 5
meters or less.
Avoid riser piping (trapping part).
Fig. 3-20 Piping to the automatic water fill port and overflow port
⚫ When using ethylene glycol aqueous solution, collect the
overflowed fluid in the recycling pit and dispose it according to the
local law of the country and area that the product is installed.
⚫ When using ethylene glycol aqueous solution, check the
concentration periodically because the density will be reduced due
to the automatic water fill function.
No riser piping
Obstacle
To drainage pit
To drainage
pit
Piping to automatic
water fill port
Piping to
overflow port
Piping to automatic
water fill port
Piping to
overflow port
Riser piping