SMC Networks HRW002-H, Operation Manual

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HRX-OM-K003
Chapter 4 System Startup and Shutdown
4.3 Supply of Circulating Fluid HRW Series
4-2
Rear
4.3 Supply of Circulating Fluid
Figure 4-1 Circulating Fluid Fill Port and Circulating Fluid Level Gauge
4.3.1 Preparation of circulating fluid

When the circulating fluid is an ethylene glycol aqueous solution
Always check the concentration of the circulating fluid.
Normal concentration: 55 to 60%

When the circulating fluid is a fluorinated fluid

When the circulating fluid is water
Circulating fluids to use vary with system models.
See section 8.1.1
“System specification” in Chapter 8 for the
designated circulating fluid for a specific model.

High concentration EG in the circulating fluid may cause circulating pump overload,
which triggers “Pump Breaker Trip FLT”.

Potential cooling error may occur if the circulating fluid varies in concentration.
Make sure of no oil, moisture, and other foreign materials contaminate the
circulating fluid. Potential cooling error or system failure, due to contaminant
freezes internally, may occur if disregarded.
Attention should be taken on water quality. Ensure water quality is within specified
range, and other foreign materials contaminate the circulating fluid. Potential
cooling error or system failure, due to contaminant freezes internally, may occur if
disregarded.
Circulating fluid fill port
Circulating fluid level gauge
Circulating fluid
specified level