HRX-OM-Q026
Chapter 7 Control, Inspection and Cleaning
HRSH Series 7.2 Inspection and Cleaning
7-5
Replacement of circulating fluid
● Replace the circulating fluid with new clean fluid periodically, or it may
get algae or decompose.
● Circulating fluid to be supplied in the tank should satisfy the water
quality specified in “Table 7-1: Quality criteria for clean water (tap
water)”.
● Make sure that the concentration of ethylene glycol aqueous solution is
15%+5/0 when 15% ethylene glycol solution is used, and when 40%
ethylene glycol aqueous solution is used, the concentration is 40%
+5/-0.
● When using the Y strainer provided as an accessory for piping, clean
the screen mesh inside the strainer at the same time as when replacing
the circulating fluid.
Ensure that there is no circulating fluid in the thermo-chiller, user's
equipment, and piping. Remove the cap and take out the screen mesh
inside, and clean the screen mesh with compressed air or detergent.
Use caution not to damage the screen mesh.
Do not use chlorine-based or such types of detergents or cleansers.
Put the screen mesh that has been cleaned into the groove in the cap,
and reassemble it to the body of the strainer.
Cleaning of the facility water system (Water cooled type)
● Clean the customer's facility water system and replace facility water.
● Facility water quality must satisfy the criteria specified in “Table 7-1
Quality criteria for clean water (tap water)”
If there is foreign matter accumulated or clogging in the facility water
system, pressure loss increases with less flow rate, and it may
damage the screen mesh.
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