april2021 - 35

PRODUCT PROFILE

used if necessary, depending on how dirty
the engine is. Once the rig is set up it takes
about one hour for the water to reach this
temperature.
Rechargeable onboard nitrogen cylinders
pressurize the liquid in the tanks, although
there are optional Air Inlet Kits if customers want to connect shop air or nitrogen.
The 2x25 gallon multi-engine compressor wash rig is a low-pressure washer,
meaning it can reach a maximum of 80
psi. Marshall says this is ideal for cleaning engines because higher pressure equipment might put unnecessary strain on the
engine.
" Pressures up to 80 psi can give a range
of different flows, " he says. " Various
engines require different flow rates and
users should consult the operation manual
to determine the flow necessary for their
engine. "
The wash procedure varies depending
on the specific engine, but Marshall says
customers typically wash the engine twice
and rinse once.
" Normally, a standard CFM or LEAP
engine might be three washes of two-minute periods with intervals of 10 minutes
between wash cycles, " he explains.
" When performing a compressor wash,
the aircraft engine is not actually started,
so no fuel is used. The turbines are turned
over using the aircraft's starter, " Marshall
continues. " This will turn the motor over to
force the water or wash solution all the way
through the engine with the 10-minute rest
periods, allowing the starter to cool down.
" A lot depends on washing instructions
within the aircraft maintenance manual, "
he says. " If detergent is required, engine
manufacturers may have their own recommendations, but that would be up to
the end-user really. Our rigs are versatile enough to handle whatever the user
requires. "
The wash rig requires a 115V/200V,
three-phase, 400Hz electrical power supply to heat the water. Customers can hook
up the equipment to a ground power unit
(GPU) or hangar power supply, allowing
employees to use it in various areas of the
airport. A 24V battery installed in the rig's
electrical enclosure provides power for the
interlock to operate.

The 2x25 gallon multi-engine compressor wash rig can service a multitude
of engines, but some larger engines need a
compressor wash rig with more capacity.
A.T. Juniper also manufactures a 2x50
gallon multi-engine compressor wash rig
to service those larger engines.
The 2x25 and 2x50 versions function
the same way and A.T. Juniper works with
its customers to determine which wash rig
is right for them.
" The 2x25 gallon wash rigs have always
proved extremely popular, " Marshall says.
" Although since the introduction of the
larger 2x50 gallon rig, production is now
pretty much 50/50 between the two. "
Various MRO and military operations,
airlines and aircraft engine manufacturers
around the world use these multi-engine
compressor wash rigs. A.T. Juniper works
with its customers to ensure voltages
are correct depending on the operation's
location.
" What engines are they washing? What
aircraft? And then it's basically about voltages and making sure that the equipment
suits the requirements of the hangar or
whether it's off-grid or using a ground
power unit, " Marshall notes.
A.T. Juniper also works with its customers to modify the wash rigs depending on their individual requirements. The
JMP/CFM56/D/4777/C300 version was
designed specifically to wash T56 engines
on the C130 Hercules for the Belgian Air

Force. The company also manufactures the
JMP/CFM56/D/4777/C900 and C1000
static versions of the 2x25 gallon rigs for
automated test cell use.
Each wash rig comes with a full technical manual that describes the maintenance procedures, operating instructions,
detailed health and safety information
and a full parts list to easily identify any
spares that may be required. The manual
also highlights which probes can be used
with which engines and what pressure to
use depending on the engine. Marshall
notes customers should always consult
the aircraft maintenance manual as well
as the multi-engine compressor wash rig
manual before cleaning an engine.
In addition to these manuals, A.T. Juniper also has a YouTube channel with videos
explaining how to use the multi-engine
compressor wash rigs. These videos serve
as operation guides on how to set up the
wash rigs and show the wash rigs in use.
" We believe strongly in the quality,
versatility and cost-effectiveness of our
products. Regular washing prolongs the
life of an engine and reduces its carbon
emissions, " Marshall says. " Plus, the benefits of owning and operating your own
engine washing equipment as opposed to
booking costly service washes are obvious
- the flexibility to wash your engines when
and where you want, all backed up by a
company that is still supplying spares for
rigs we manufactured in the 1950s. "

APRIL 2021

AviationPros.com

http://www.AviationPros.com

april2021

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