Shini STM-1220-PW, Manual

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2) Take down the side covers. (Refer to the pictures below)
Picture 6-2
：
Open the Covers 2
3) Open the cover of control box. Screw off two butterfly screws to unlock the
cover. (Refer to the pictures below)
Picture 6-3
：
Open the Covers 3
6.2 Y Type Strainer
1) Clean soft water should be used as cooling water. Filter screen is used in the
strainer to stop impurities and pollutants to enter into water pipe.
2) Impurities or pollutants may cause errors and bad temperature control.
Clean filter screen of the strainer periodically.
3) Cleaning steps: turn off power and cooling water supply. Open the top cover
of filter screen to clean the filter.
Picture 6-4
：
Y Type Strainer