Watts PWR8024 - Manual (Page 5)

5
III. Operation
A. Installation
1. The water supply should be sufficient to provide a minimum of
20 psig pressure at the design feed flow.
2. Proper pretreatment must be determined and installed prior to
the RO system.
3. A fused high voltage disconnect switch located within 10 feet of
the unit is recommended. This disconnect is not provided with
the RO system.
4. Responsibility for meeting local electrical and plumbing codes
lies with the owner /operator.
5. Install indoors in an area protected from freezing. Space al-
lowances for the removal of the membranes from the pressure
vessels should be provided. This system requires 42" minimum
clear space on each side.
B. Plumbing Connections
Note: It is the responsibility of the end user to ensure that the
installation is done according to local codes and regulations.
1. Connect the pretreated feed water line to the inlet side of the
prefilter housing. (Figure # 1 item # 1) A feed water shutoff valve
should be located within 10 feet of the system.
2. Temporarily connect the outlet of the product water flow meter
to drain. (Figure # 1 item # 2) The product water line should
never be restricted. Membrane and/or system damage may oc-
cur if the product line is blocked.
3. Connect the outlet of the reject water flow meter to a drain. (Fig-
ure # 1 item # 3) The reject drain line should never be restricted.
Membrane and/or system damage may occur if the reject drain
line is blocked. An air gap must be located between the end
of the drain line and the drain. The use of a standpipe or other
open drain satisfies most state and local codes and allows for
visual inspection and sampling.
C. Electrical
Note: It is the responsibility of the end user to ensure that the
installation is done according to local codes and regulations.
1. A safety switch or fused disconnect should be installed within
10 feet of the system. The disconnect and fuses should be sized
accordingly.
2. Verify that the disconnect switch is de-energized using a
voltmeter.
3. Connect the outlet of the disconnect switch to the top of the
motor starter relay. (Figure #1 item Q and Figure #2). Attach the
power supply ground to the controller ground.
4. Do not apply power to the RO unit at this time.
D. Startup
1. Verify that the pretreatment equipment is installed and working
properly. Verify that no free chlorine is present in the feed water.
2. Verify that the controller on/off switch is in the off position.
3. Close the pump discharge completely then open it one turn.
Note: All valves on this unit turn clockwise to close.
4. Install five micron filter cartridges in the prefilter housing.
5. Open the reject control valve completely by turning it counter-
clockwise.
6. Close the reject recycle control valve completely by turning it
counterclockwise.
7. Open the feed water shutoff valve installed in step III-B-1 above.
8. Engage the safety switch or disconnect (installed in step III-C-1
above) to apply electrical power to the RO system.
9. Turn the key switch on by rotating it clockwise. Press the power
button. There will be a 10 second delay and the pump will start.
Press the power button as soon as the pump starts to shut it
down and look at the motor fan as the pump stops to determine
if the pump rotation is correct. The fan should rotate in the direc-
tion indicated by the rotation arrow on the pump. Continue with
the startup if the pump is rotating in the proper direction. If the
pump rotation is backwards, reverse the rotation by shutting off
the power and swapping any two of the three power lines con-
nected in step III.C.3 above. Verify correct pump rotation before
continuing with startup.
10. Turn the system on and allow the product and reject water to go
to drain for 15 minutes.
11. Adjust the reject control valve, the reject recycle control valve
and the pump discharge valve until the desired flows are
achieved. Closing the reject valve increases the recycle and
product flow and decreases the reject flow. Closing the reject
recycle valve increases the reject and product flow and de-
creases the recycle flow. Opening the pump discharge valve
increases all of the flows. See the temperature correction table in
the appendix to determine the flow rates for different operating
temperatures.
12. Allow the product water to flow to drain for 30 minutes.
13. Turn off the system and connect the product line to the point of
use. The product water line should never be restricted. Mem-
brane and/or system damage may occur if the product line is
blocked.
14. Restart the system and record the initial operating data using the
log sheet in the next section.
15. See the controller section for detailed information about the
controller.