What is difference between UL/FM approved pump and general pump
What is difference between UL/FM approved pump and general pump
(OP)
One daft question regarding the difference between fire pump UL/FM approved and general pump in the same capacities apart from its price. Technical aspects only !
Test method? material components specified ? or even some prohibits according to the related code, NFPA ?
please shed me some light on this question.
Regards
Test method? material components specified ? or even some prohibits according to the related code, NFPA ?
please shed me some light on this question.
Regards





RE: What is difference between UL/FM approved pump and general pump
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RE: What is difference between UL/FM approved pump and general pump
Will only the motor be tested in that criterion to get UL/FM approved?
Does it have other testings such as the material concerned, its local control panel and so forth?
I've been trying to find some related documents talking about the approved criteria (in details) on internet but it was to no avail. Please give me a source.
Thanks again.
RE: What is difference between UL/FM approved pump and general pump
Controllers and Transfer Switches are also listed for fire service.
Regards
D
RE: What is difference between UL/FM approved pump and general pump
LCREP gave a good summary.
The UL standard is UL488 -- and there are many ancillary standards within the UL library, such as UL218 for fire pump controllers. There's also UL488A for the coupling between the pump and its driver, UL448B for residential versions, and UL448C for positive-displacement versions.
They're available for purchase from UL online, or occasionally you can find such in large public libraries.
Someone who is more familiar with all the standards may be able to give you an overview, though.
Good on ya,
Goober Dave
RE: What is difference between UL/FM approved pump and general pump
If not just a long read to compare NFPA 20 with a regular pump installation.
RE: What is difference between UL/FM approved pump and general pump
But the dispute has been made that the jockey pump is only pressure maintenance in the fire system and not classified as the fire protection purpose. As a result, no UL approval applied for this jockey pump.
I'm trying to mediate the owner by providing the owner the reasonable technical aspect(s) including some compensation.
RE: What is difference between UL/FM approved pump and general pump
Thanks in advance again
RE: What is difference between UL/FM approved pump and general pump
A pressure maintenance pump does not need a pump test curve - it only maintains pressure. It has no impact on the required flow capacity of the fire pump.
RE: What is difference between UL/FM approved pump and general pump
-the on off pressure set points that shoul be related to the pressure set start point of the main pump,
-the sensing line connections.
Other local requirements say that the suction point of the jockey should be connected directly to the water supply in order to have the system full even if the manin pump is out of order.
You could use any means to keep the system full and pressurized but keep in mind that to start the main pump with low pressure setting, it is not easy to find something to replace a jockey pump.
To be listed or not, is related to the type of controller contents, since the UL has a standard for an industrial type of controller with specific options for the jockey pump. In some cases you have to add a timer in the controller to help the jockey pump to work in an economic and efficient way, to avoid frequent starts.
So in general it is not needed but helpful if it is listed.