, 2012 8:19 PM
To: sprinklerforum@firesprinkler.org
Subject: Re: Fire pump annual test
on 2nd thought (calc), 65-70% is closer, I bet.
78% is 4500 @ 170.
by the way, what does PLD stand for?
Quoting bcasterl...@fsc-inc.com:
> George,
> 78% efficient at overload.. not too shabby!
> Do y
Power Limiting Device (aka Cruise Control)
- Original Message -
From: bcasterl...@fsc-inc.com [mailto:bcasterl...@fsc-inc.com]
Sent: Sunday, October 07, 2012 12:18 AM
To: sprinklerforum@firesprinkler.org
Subject: Re: Fire pump annual test
on 2nd thought (calc), 65-70% is closer, I bet
on 2nd thought (calc), 65-70% is closer, I bet.
78% is 4500 @ 170.
by the way, what does PLD stand for?
Quoting bcasterl...@fsc-inc.com:
George,
78% efficient at overload.. not too shabby!
Do you recall the rated RPM? If I assume a 14" impeller diam. I get 2600 RPM.
I thought about converting t
George,
78% efficient at overload.. not too shabby!
Do you recall the rated RPM? If I assume a 14" impeller diam. I get 2600 RPM.
I thought about converting the 400 speed reduction to the pump room
temperature rise but said nahhh.. it would be negligible against the
1st law of testosterone, Lo
Sent: Wednesday, October 03, 2012 2:09 PM
To: sprinklerforum@firesprinkler.org
Subject: Re: Fire pump annual test
When testing a fire pump, pump speed ALWAYS drops with increased flow.
In a message dated 10/3/2012 8:43:56 A.M. Eastern Daylight Time,
bcasterl...@fsc-inc.com writes:
Tom, let
thanks DJJ8389, that's what I thought. I guess electric motor drive is
more consistent and closer to expectations than engine driven. As far
as Tom's 'adjusting the pressure to rated speed' goes though, with
electric we are at the mercy of the local Power and Light, whereas
with engine driv
, mid- November in Kansas :)
-Original Message-
From: bcasterl...@fsc-inc.com [mailto:bcasterl...@fsc-inc.com]
Sent: Wednesday, October 03, 2012 5:30 AM
To: sprinklerforum@firesprinkler.org
Subject: RE: Fire pump annual test
Tom, I guess once we equate what goes out of the tachometer wi
resprinkler.org
Subject: RE: Fire pump annual test
Tom, I guess once we equate what goes out of the tachometer with what
goes into the thermometer, the speed does not change-- the magic of
the second law of thermodynamics! (or, as you put it-- 'Pump affinity').
Quoting Tom Duross :
&g
...@firesprinkler.org
[mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Tom Duross
Sent: Tuesday, October 02, 2012 7:15 PM
To: sprinklerforum@firesprinkler.org
Subject: RE: Fire pump annual test (VALVES)
I would never put full pump pressure on a header that's normally empty or
use hose
Tom, I guess once we equate what goes out of the tachometer with what
goes into the thermometer, the speed does not change-- the magic of
the second law of thermodynamics! (or, as you put it-- 'Pump affinity').
Quoting Tom Duross :
Brad, we measure rpm as a means of adjusting pressures to ra
Some UL/FM playpipes are listed with and without the tips. I used to have a
listed " test nozzle also.
"For I am not ashamed of the gospel , , because it is God’s power for salvation
to everyone who believes..." HCS Romans 1:16
On Oct 2, 2012, at 6:14 PM, "Tom Duross" wrote:
> This message c
after the increaser).
-Original Message-
From: sprinklerforum-boun...@firesprinkler.org
[mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Brad Casterline
Sent: Tuesday, October 02, 2012 9:02 AM
To: sprinklerforum@firesprinkler.org
Subject: RE: Fire pump annual test
Gerzayn,
It
I would never put full pump pressure on a header that's normally empty or
use hose gates to modulate either. Always modulate with the OS&Y or BV,
keep the pump pressure in the system, who cares if you have 2) 18's, a 19
and a 17? Playpipes are only listed with the tips on (1-1/8") which is why
we
ouncing of the gauge in use)
R/
Matt
-Original Message-
From: sprinklerforum-boun...@firesprinkler.org
[mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Cahill,
Christopher
Sent: Tuesday, October 02, 2012 11:12 AM
To: sprinklerforum@firesprinkler.org
Subject: RE: Fire pump a
J. Willis
Sent: Tuesday, October 02, 2012 9:59 AM
To: sprinklerforum@firesprinkler.org
Subject: RE: Fire pump annual test (VALVES)
". If you have the same setup on each valve and playpipe you can open all the
2.5" valves first with no flow and throttle with the manifold valve as all the
". If you have the same setup on each valve and playpipe you can open all the
2.5" valves first with no flow and throttle with the manifold valve as all the
playpipes should be the same. "
Unless your manifold valve is non-throttling (OS&Y). Even then, isn't each hose
lay different?
R/
Matt
rg
Subject: RE: Fire pump annual test
Gerzayn,
It is OK to do more, but the minimum required is to read/record (4) things at
(3) flow rates. The (3) flow rates are 0, rated, and 150% rated. The (4) things
are:
1. The difference between suction pressure and discharge pressure 2. RPM 3.
Vol
One clarification. You can't take your final pressure pitot readings until you
have all the valves/playpipes open. As you open subsequent ones the prior
ones drop a bit. Your best bet is BEFORE you do the test know what pitot you
want from each playpipe and how many valves you want open. Ope
Gerzayn,
It is OK to do more, but the minimum required is to read/record (4) things at
(3) flow rates. The (3) flow rates are 0, rated, and 150% rated. The (4) things
are:
1. The difference between suction pressure and discharge pressure
2. RPM
3. Volts
4. Amps
The following is FYI for sprinkler
19 matches
Mail list logo
