3M ScaleGard HP, Installation And Operation Instructions Manual

10

Start-Up Test Checklist 

Close tank-valve, Open the “sample valve” (available downstream of RO

)

• Pump turns on 

√

• Water visually fl ows through  “sample valve” and drain line 

√

Keeping tank-valve closed, close the “sample valve”

• Pump turns off 

√

• Water stops fl owing through drain line 

√

• RO Feed Pressure” (Gauge 1) shows 0 psi (0 kPa, 0 bar) 

√

• “System Pressure” (Gauge 2) shows about 60 psi (414 kPa, 4.14 bar) for 110-120VAC systems and 70 psi (483 kPa, 4.83 bar) for 22-240VAC 

systems 

√

Open the “sample valve”

• Pump on and “RO Feed Pressure” (Gauge 1) shows 110-125 psi (758-862 kPa, 7.58-8.62 bar) 

√

• “System Pressure” (Gauge 2) shows 0 psi (0 kPa, 0 bar) 

√

• Permeate being rinsed for fi rst 25 seconds 

√

• After 30 seconds of fl ow, check if measured production rate is as expected 

√

• After 30 seconds of fl ow, check if TDS reduction is as expected 

√

Close the “sample valve” and allow the tank to fi ll up

• Verify “System Pressure” (Gauge 2) increases slowly to 60 psi (414 kPa, 4.14 bar) for 110-120VAC systems and 70 psi (483 kPa, 4.83 bar) for 

220-240VAC systems as tank fi lls up 

√

• Verify pump turns off and reject-fl ow shuts off when “System Pressure” (Gauge 2) is 60 psi (414 kPa, 4.14 bar) 

√

System Start Up

1.  Open unit inlet shutoff valve (See Figure 1, page 7)

2.  Turn ON the feedwater supply by plugging system into electrical outlet.

3.  Open Pre-Filter fl ush valve to vent air from system and fl ush for  

10 gallons (approximately 5 minutes). If error light turns ON during  

Pre-Filter fl ushing process then press reset button.

4.  Close fl ush valve. Pre-Filter pressure gauge (left gauge) should read between 

115-125 psi.(See Operating Pressure instructions to adjust) 

5.  Complete blending valve adjustment procedure below. (See instructions below)

6.  Allow tank to fi ll until the RO unit turns OFF on full tank (See chart). Tank operating pressure 

for the 110-120VAC version is ON at 40 psi (276 kPa, 2.76 bar) and OFF at 60 psi (414 kPa, 4.14 
bar) (right gauge). Tank operating pressure for the 220-240VAC is ON at 50 psi (345 kPa, 3.45 
bar) and OFF at 70 psi (483 kPa, 4.83 bar).

7.   Flush membrane by opening pressure tank sample valve and empty tank to drain. After fl ushing 

the system for at least 24 hours, close the tank sample valve.

8.  Sanitize the Storage Tank and RO System according to the storage tank and RO system 

sanitizing instructions on page 11.

9.  Allow tank to fi ll again. System is now ready for use. 

Part Number

Pressure Volume

Approximate 

Time to Fill

 5598407

10 gallons (38 liters)

0.3 hours

5598408

20 gallons (76 liters)

0.6 hours

5598409

40 gallons (151 liters)

1.2 hours

Required (Sold Separately)

Figure 4 (Reset Button)