Results 1 to 10 of 10
-
28-04-2010, 04:59 PM #1
Bench testing semi hermetic compressors
Hello,
can any one tell me how many bench tests can be done on semi hermetic compressors without
using *****, from 3hp up to 60 hp
thanks !!
-
28-04-2010, 05:01 PM #2
-
28-04-2010, 05:56 PM #3
Re: Bench testing semi hermetic compressors
Yes, manufacturer of compressors test them with OFN shortly.
-
29-04-2010, 08:33 PM #4
Re: Bench testing semi hermetic compressors
Are you sure?
I don't think I would run a comp with nitrogen in it.
A small comp will not be able to compress it.
ChillinIF AT FIRST YOU DON`T SUCCEED.
DESTROY ALL EVIDENCE THAT YOU TRIED!
and go get a cuppa
-
29-04-2010, 08:43 PM #5
Re: Bench testing semi hermetic compressors
They can compress it, its squishy cos its a gas, the problem comes in a fridge system because they can't condence it hence a stupid high discharge pressure in no time.
On a specially designed test rig it would be ok, it would just measure flow, pressure and run current etc and compare to a new comp specs.
Jon
-
30-04-2010, 07:29 AM #6
Re: Bench testing semi hermetic compressors
A compressor compresses whatever gas it sucks. Why shoudn't it be able to compress it?
Surely, the max ratio depends on the compressor, though...
The way it works is exactly as monkey spanners explained. It's not tested on a condensing unit.
-
03-05-2010, 07:31 PM #7
Re: Bench testing semi hermetic compressors
hi all , AIREDALE the yorkshire based a-c manufatorer test runs there units on ofn
-
05-05-2010, 11:11 AM #8
Re: Bench testing semi hermetic compressors
The important test is the leak back test which sets a limit for the discharge reed valves to suction valve reed . Do not run semi-hermetic comp on N2 . Do a free run test . The compressor builds up an air pressure of say 120 psig in a receiver tanks , switch off the compressor & measure leak back flow .
-
05-05-2010, 03:00 PM #9
Re: Bench testing semi hermetic compressors
MR dd KORANNE, YOU ARE RIGHT do not use N2 on any fridge compressor, use OFN, THAT IS OXYGEN FREE NITROGEN
-
07-05-2010, 06:38 AM #10
Similar Threads
-
(semi) Hermetic vs Open drive compressors
By emlotte in forum Technical SpeculationsReplies: 1Last Post: 05-11-2009, 03:55 PM -
Compressors - screw or reciprocating?
By Josip in forum Industrial CompressorsReplies: 18Last Post: 27-01-2009, 10:36 PM -
Dorin Semi hermetic Compressor
By Samarjit Sen in forum Industrial CompressorsReplies: 5Last Post: 02-07-2007, 04:06 PM -
do we need a hermetic or semi hermetic comp.?
By duraid in forum FundamentalsReplies: 14Last Post: 17-04-2007, 05:52 PM -
Part Wound Semi Hermetic Compressors
By bernard in forum ElectricalReplies: 9Last Post: 22-12-2005, 06:33 PM