Johnson Controls VB09 - Cleaning the System; FIGURE 20 - System Flushing and Cleaning

29
SECTION 1 - INSTALLATION
FORM 145.18-IOM1
ISSUE DATE: 8/30/2018
1
10. Continue to bleed the system until the water leav-
ing the drain is clear, no less than 2 hours.
11. Completely drain the piping system.
Cleaning the System
1. After the initial ushing, chemically clean the
system. Repeat the method in Flushing the System
on page 28 to rell the system and circulate the
cleaning solution.
It is recommended to use the services of a pro-
fessional water treatment company for the type of
solution to be used and the duration of the clean-
ing application.
2. Once the cleaning process is complete, shut off
the circulating pump and completely drain the
system.
3. Rell the system with clean water to prepare for
refrigeration chassis connection and system start-
up.
It is recommended that a professional wa-
ter treatment company perform ongoing
maintenance of the water loop including
chemical analysis and ushing, if neces-
sary. The water loop testing should be per-
formed at intervals recommended by the
professional water treatment consultant.
It is recommended that the water loop
testing be performed at least once a year.
Standard practice is once a month or
quarterly.
The customer is responsible for complet-
ing adequate water loop maintenance
over the lifespan of the units. Otherwise,
damage to the units may occur.
Stub-outs
to chassis
Hose or piping
connecting
supply & return
runouts
Supply
Riser
Return
Riser
Hose or piping
connecting supply
and return runouts
Stub-outs to
chassis
Supply
Riser
Return
Riser
LD19685
FIGURE 20 - SYSTEM FLUSHING AND CLEANING