Watts PWRO440 - Manual (Page 5)

5
F. Operation and Maintenance Log
Dat
e
PROD
uct G
Pm
Reject G
Pm
Pum
P
Discha
RG
e
PR
essu
Re
Fee
D
tD
s P
Pm
PROD
uct
tD
s
PP
m
Fee
D W
ate
R
tem
P
Fee
D W
ate
R
ha
RD
ness
Fee
D W
ate
R
chl
OR
ine
level
PR
e Fil
te
R
inlet
PR
essu
Re
PR
e Fil
te
R
Outlet
PR
essu
Re
Rema
Rks
Note: Change the pr
efilter when the dif
fer
ential pr
essur
e incr
eases by 5 - 10psi over the clean dif
fer
ential pr
essur
e.
Clean the RO membrane(s) when the pr
oduct flow dr
ops by 15% or mor
e. (See appendix)