SMC Networks HRS018-A 20 R Series - 3.5 Fill of circulating fluid

HRX-OM-W058
Chapter 3 Transport and Setting Up
3.5 Fill of circulating fluid HRS-R Series
3-22
3.5 Fill of circulating fluid
Turn the tank lid anticlockwise to open. Supply the circulating fluid up to the “H”
mark on the fluid level indicator. Use tap water which satisfies the water quality
standard shown inTable 8-1, or a 15% aqueous solution of ethylene glycol.
Fig. 3-15 Circulating fluid fill
 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 concentration of the ethylene glycol aqueous solution, a concentration meter 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
-
 Check the drain port is plugged or closed by the valve to prevent the
supplied circulating fluid from draining out.
 Supply the circulating fluid up to the “H” mark on the tank.
Operation will stop when the fulid level falls lower than “L”.
 When the temperature of the circulating fluid is set to lower than
10
o
C, use a 15% aqueous solution of ethylene glycol. Tap water
may freeze in the thermo-chiller, leading to malfunction.
Tank lid
Fluid level
Circulating fluid fill