Watts R48-20-3131100 User Manual
Page 10
F.
Operation and Maintenance Log
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 allowances 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 system inlet. (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 occur
if the product line is blocked.
3.
Connect the outlet of the reject water flow meter to a drain. (Figure # 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.