Water maker power draw


I had a problem with the 160 l / hour watermaker on SM#331 which
tripped the breaker when it was first put into service. There had
been a seal failure problem with the pre-feed pump and I replaced
this with no change in the breaker tripping behavior. Sometimes the
unit would operate for 30 minutes or so before the breaker tripped. I
tried simply replacing the Amel supplied 20 ampere breaker, assuming
that it was faulty but the problem persisted. After several e-mails
to Amel, they agreed that I should replace the breaker with one rated
for 25 amperes. I did this and the unit has operated perfectly for
the past 12 months. I have since discovered that at least one other
Super Maramu owner has had to make the same modification. I have
assumed that the unit must be drawing around 22 amperes in normal
operation – around 4.8 kW but I have not metered this.

Ed Steele
#331 `DoodleBug'

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