SMC Networks HRSH150-A*-20 Series, Operation Manual

Page: 46 / 178

HRX-OM-Q026-B
Chapter 3 Transport and Setting Up
3.5
Fill of circulating fluid HRSH Series
3-28
„ 15% aqueous solution of ethylene glycol
When a 15% aqueous solution of ethylene glycol is used, prepare the ethylene glycol aqueous
solution separately.
To control the density of the ethylene glycol aqueous solution, a densitometer is available separately
from SMC.
Item No Remarks
Ethylene glycol aqueous solution 60% HRZ-BR001
Please dilute to 15% with tap
water and use it.
Densitometer HRZ-BR002 －
„ Piping of the overflow
Piping name Port size Piping specification
Automatic fluid fill port Rc1/2 Supply pressure: 0.2
～
0.5MPa
Overflow port Rc1
Should be ID25mm and more length 5m and less and
avoid riser piping (trapping part).
Fig. 3-18 Piping of the automatic fluid-fill port and overflow
z When a 15% aqueous solution of ethylene glycol is used, check the
density periodically because the density will be lower due to the
automatic fluid-fill function.
z When using the 15% aqueous solution of ethylene glycol, collect
the overflowed fluid in the sump pit and dispose it according to the
local low of the country and area that the product is installed.
No riser piping
Obstacle
To sump pit
To sump pit
Piping of automatic
fluid-fill port
Piping of overflow
port
Piping of automatic
fluid-fill port
Piping of overflow
port
Riser piping