Technical specifications – Davey SCMax 77 ECOMATIC Salt Water Pool Sanitizing System User Manual

Page 4

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4

Technical Specifications

Input Voltage (ac):

220-240V

Supply Frequency / Phase:

50/60Hz / Single

Maximum Input Current (ac):
M4920
M4921

2.5 Amp
5.0 Amp

Power Consumption @ 230V:
M4920
M4921

0.58 kW
1.15 kW

Output to Cell (dc):
M4920
M4921

22-24V / 9A
24-26V / 25 A

Chlorine Gas Output:
M4920
M4921

59 g/h, 3.12 lbs/d
118 g/h, 6.24 lbs/d

Ideal Salt Range:

4,500 - 6,000 ppm

Cooling:

Fan & Heatsinks

Electrolytic Cell Type:

Coated Titanium - Reverse Polarity

Maximum water temp (in cell):

45ºC OR 113 ºF

Minimum flow:
M4920
M4921

> 170 lpm *
> 350 lpm * / 95 USgallons/min
* Value based on a 10ppm chlorine level at cell outlet
Please refer to Flow Rate Requirements pg 6

Head loss @ 350lpm
M4920
M4921

8kPa
13.2kPa

Pipe Connections:

3” / 80mm or 2” / 50mm with adaptors

Dimensions – PowerSupply Enclosure

Height

Width

Depth

Mounting

Weight

inches

15.7

14.6

8.5

4 Holes:

10.6 W

12.8 H

37 lb

millimeters

400

370

215

4 Holes:

270 W

325 H

17 kg

Dimensions – Electrolytic Cell

Height

Width

Depth

Inlet / Outlet

(Actual ID)

Plumbing Holes

(From centre to

centre)

Weight

inches

8.1

16.3

4.9

3.5

11 &

3

/

4

6.6 lb

millimeters

206

415

125

89

294

3 kg

Flow Rate Requirement

Model

Nominal Rated Chlorine Gas Output

Minimum Flow Rate in Cell

SC Max 77

53 g/h

2.83 lbs/d

> 170 lpm

> 45 gpm

SC Max 155

106 g/h

5.65 lbs/d

> 235 lpm

> 63 gpm

NOTE: In certain installations, these minimum flow rates may be insufficient to fill the cell housing completely with
water – in these cases the flow must be increased to ensure that the cell plate surfaces are completely immersed,
otherwise damage will occur and decreased cell life will result.

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