37
Introduction to Spectra Chemicals
We use four types of chemicals: SC
-
1, SC
-
2, SC
-
3, and propylene glycol antifreeze. SC
-
1 and
propylene glycol are for system storage, while SC
-
2 and SC
-
3 are for membrane cleaning.
Do
not use sodium
-
bisulfate, citric acid, or any other storage chemical not supplied by Spectra.
These chemicals, used to store other watermaker brands, will damage the Clark Pump,
membrane end plugs, manifolds, and other components.
Using non
-
Spectra chemicals will
void the warranty.
Note:
Never use any chemicals with the system pressurized!
Always open the pressure relief
valve 1/2 turn. Always follow the instructions for purging the chemicals as shown in the New
System Startup section (page 25).
Storage
SC
-
1 prevents biological growth when your system is idle. It should not be used as a cleaning
chemical, nor will it protect your system from freezing. A bag of SC
-
1 is mixed with 1 to 2
gallons of product or dechlorinated fresh water in a bucket and circulated through the system
for 10 minutes. This treatment will protect the system for six months, after which the SC
-
1
treatment must be repeated. To use SC
-
1, follow the instructions for
Storage Procedure
.
Spectra systems should be stored with propylene glycol if freezing is likely to occur. Propylene
glycol can be used instead of Spectra SC
-
1 storage chemical for storage in any climate, and
treatment is effective for one year. Propylene glycol is a food
-
grade antifreeze used to
winterize RV
’
s, boats, and cabins. Do not use ethylene glycol automotive antifreeze, which is
toxic and will damage the system.
The propylene glycol formulations sold in marine and RV stores are usually diluted with water.
The water remaining in the watermaker before the storage procedure will further dilute the
antifreeze, reducing the microbial protection and increasing the temperature at which the
mixture will freeze.
Antifreeze labeled
“
Minus Fifty
”
is a 25% solution and will begin to form an icy slush at about
+15Degrees F (
-
10C) and will only provide burst protection to about Zero F (
-
18C). After a
further 50% percent dilution by water remaining in the watermaker,
“
Minus Fifty
”
antifreeze
will only protect from bursting down to about +25F (
-
4C). Therefore if low temperature
freezing protection is required a 60% or stronger antifreeze should be used. 60% solutions are
labeled
“
Minus
100”
and will provide burst protection to
-
15F (
-
27C) even after a fifty percent
dilution with residual water.
“
Minus
200”
formulations are pure propylene glycol.
Maintenance Cont.
Содержание Spectra Watermakers Catalina 340R
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Страница 61: ...61 HP TB VEB B HP TB VB HP TB VEB A HP TB BV HP CB CB10 HP CYL SST HP CYL R HP CYL EC HP CYL CCA Not used ...
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Страница 64: ...64 Parts PL MTS 3 8X1 2B HP CYL SST HP CYL CCA SO HPP ECCB HP CYL EC HP CYL R HP CYL PT Parts ...
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