Sigma are no longer and the company now trades as Air International. Their
units are reasonably good however the main failures are attributed to flood
damage to roof mounted units that fill with coal dust. Also they fracture
the copper pipes from the vibration within the car body and this allows
the refrigerant gas to escape. Silverton have successfully applied a modified
truck type AC units to the 48s class units that had cab upgrades done by
RTS. The costs of locomotive AC units is extremely high with a roof mounted
unit for an 82 in excess of $35,000 each. This is mainly due to to the
odd voltages (74v DC) on the locomotive. 80 class were the first NSW units
to have AC fitted and these are not very reliable at all. Most drivers
will tell you that the #2 end units never work. If you want any more info
re these units contact me offline.
Cheers
Bob
"Stratton, Chris CP" wrote:
Aus loco discussion mailing listI don't know about reliability but Sigma is by far the most popular brand, it is made in Australia.
80,81,82,90 in NSW fitted from new (not sure about 85 and 86).
Some 48s and a couple of 422s have been retrofitted.
Regards,
Chris.-----Original Message-----
From: John Regan [mailto:reganjd@clear.net.nz]
Sent: Monday, 20 March 2000 1:52
To: Ausloco
Subject: Locomotive Air ConditioningAus loco discussion mailing list
Hi All
I have a few questions regarding locomotive air conditioning systems.
Are all lead unit locomotives equiped with aircon?
Is it reliable or does it fail regularly?
What is the most common faults with a/c units and are they able to be
corrected by train crews?Are older locomotives fitted with aircon and is it reliable? Was it built
in new or retro fitted?Can anyone tell me if there is a preferred brand of a/c unit?
The reason I ask is that we are trying to get Tranz Rail to fit a/c to our
ageing loco fleet. We are told by the powers that be that almost 90% of
loco bookings or bad orders are a/c related (sounded abit far fetched to me
but who knows). We are also told that a reliable a/c unit has never been
produced for a locomotive which I find hard to beleive.I suspect they are just using this as an excuse to avoiding some capital
expenditure.Any help on this matter would be most appreciated.
Thanks in advance.
John Regan
reganjd@clear.net.nz
Christchurch
NEW ZEALAND+64 3 338 4260 (home)
+64 21 362 143 (mobile)
ICQ #15462976"GROWING OLD IS MANDATORY - GROWING UP IS OPTIONAL!"
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