I. INTRODUCTION
1. PC shielded muting circulating pump (hereinafter called as "electronic pump").
The motor stator will be totally shielded and the rotary components will emer-
ge into clean water, playing an important role in cooling and lubricating during
working: the thin housing structure is used as pump shielded sleeve, which
fully separates the inner core and external water. It also cancels the traditional
mechanicalsealing structure and successfully solves the common leakage, the
rotary components are adopted on ceramic bearing, which is durable and can be
purified with clean water. Ceramic bearing can not only effectively cool the mo-
tor, but also reduce the noise, and guarantee no overload during all the working
process. This product is able to be free of service if accurately used.
2. There're three-grades settings on switch knob of junction box for speed adjus-
ting and the flow and total head change. Grade I is low speed with min flow and
head; Grade II is intermediate speed; Grade III is the rated speed. That is, high
speed with max flow and total head.
3. Heat- proof material is adopted in inner motor avaliable for heat circulating
compression system.
I. MODEl INSTRUCTIONS
1. Model instructions
PC
32 8
220
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Introduction model
4