SMC Networks HRS018-A, Operation Manual

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HRX-OM-W058
Chapter 8 Control, Inspection and Cleaning
HRS-R Series 8.2 Inspection and Cleaning
8-5

Replacement of circulating fluid

Clean the tank and replace the circulating fluid.

For the circulating fluid, select from the specification range shown in
’’Table 8-1
Quality standard for fresh water (tap water)
’’.

When using 15% ethylene glycol solution, check that the concentration is within the
range of 15% +5/-0.
8.2.4 Inspection every 6 months

Check for water leakage from pump (For option T [High pressure pump])
Remove the panel and check the pump for excessive leakage. If the
leakage is found, replace the mechanical seal. Order the mechanical seal
described in “8.3 Consumables” as a service part.

Leakage from the mechanical seal
It is impossible to prevent the leakage from the mechanical seal completely
because of its structure. Although the leakage is described as 3cc/hr or less.

The recommend life time of the mechanical seal before needing replacement is
6000 to 8000 hours (usually 1 year)
Fig. 8-3 Check for water leakage from pump
Check point to see leakage