III. Working Conditions
The electric pump shall continuously work normally under the following conditions:
1. The environment ambient shall not 40
℃
;
2. Liquid temperature: 0~+40
℃
; liquid temperature of AWZB and PW: 0~+90
℃
3. The PH value of the medium shall be between 6.5 - 8.5;
4. The volume ratio of the solid impurity in the medium shall not exceed 0.1% and the
particle size shall not exceed 0.2mm;
5. The voltage and frequency of the power supply must meet the rated voltage and
frequency on the nameplate of the electric pump; the fluctuation range of the voltage is
±
10% of
the rated value.
Vortex-type Micro Clean Water Pumps (hereinafter referred to as the “electric pump”)
include: SQm, QB, WZB, AWZB, PW; the electric pump consists of the motor, water pump and
seal these three parts. The motor is the asynchronous motor. The impeller structure of the vortex-
type pump is the vortex type which can achieve high head. WZB, AWZB and PW have the self-
priming function while QB and SQm do not. PW and AWZB are equipped with the auto control
system, which can realize the water discharge once you open the outlet valve and the electric
pump works and once you close the outlet valve, the electric pump will automatically stop working
without need to cut off the power artificially. Between the pump and the motor, the single
mechanical seal is adopted and the O-ring is adopted at the fixed seam allowance for static seal.
PW-Z series automatic self-priming pumps are configured with flow switch, pressure switch
and circuit board. Pumps can collect flow and pressure data through flow switch and pressure
switch and automatically on/off after analysing by the circuit board. PW-Z series pumps have the
functions of water-load protection, delay start and anti-jamming the pump is in the standby state.
II. Product Overview
3
