Piper Lance II User Manual

LANCE
II SERVICE
MANUAL
e.
Connect
the
heating
element
plug
(16)
to
a 110
volt
outlet.
f.
Turn
cylinder
sight
glass
to match
pressure
reading
on
cylinder
pressure
gauge,
this
scale
should
be
used
during
entire
charging
operation.
g.
Close
valve
(3)
(low
pressure
control),
fully
open
valve
( 11)
(refrigerant
control)
and
allow
all
the
liquid
refrigerant
contained
in
the charging
cylinder
to
enter
high
side of
aircraft
system.
h.
When
the full
charge
of refrigerant
has
entered
the
system,
close
valve
(11) (refrigerant
control)
and
valve
(10) (high
pressure
control).
i.
After
completion
of charging,
close
all
valves
on the
charging
stand.
Disconnect
the
high
and
low
pressure
charging
lines
from
the
aircraft
system.
(A
small amount
of refrigerant
remaining
in the
lines
will escape.)
Replace
lines
on holder
of
charger
stand
to
keep air
and
dirt
out of
lines.
Open
the valve
at
the top
of
cylinder
to relieve
any remaining
pressure.
then
reclose
the
valve.
j.
Reinstall
protective
caps
of
Schrader
valves
and
any
access
panels
previously
removed.
14-16.
USING
THE
AIRPLANE
COMPRESSOR
TO
CHARGE
THE
SYSTEM.
This
method
is the
least
desirable
due
to
the requirement
of
operating
the
airplane's
engine
to
run
the
compressor.
CAUTION
Ascertain
that
the area
around
the airplane
is clear
and
a
qualified
person
is at the
controls
of
the airplane.
a.
With
the
system
evacuated
as outlined
in paragraph
14-13,
connect
the
refrigerant
charging
hose
to
the
manifold
(refer
to Figure
14-8)
and
purge
the
charging
hose
of
air.
b.
Place
the refrigerant
container
on
a scale
to observe
the amount
of
refrigerant
entering
the system.
Open
the high
pressure
valve and
add
as much
refrigerant
as possible.
c.
Close
the high
pressure
valve,
start
the engine
and
operate
it at
900 to
1000
RPM.
d.
Operate
the air
conditioner
and
set controls
to maximum
cooling.
e.
Open the
low pressure
valve
and complete
charging
the
system.
f.
Close
the low pressure
valve
after
two pounds
of refrigerant
has been
added to
the
system.
g.
With
the system
still
operating,
observe
the
sight
glass in
the
top of
the
receiver-dehydrator
by
removing
the
plastic
plug.
h. The
sight
glass
should
be
clear
of any
bubbles
or
foam.
If bubbles
or foam
are
seen
passing
through
the
sight
glass, it
is an indication
of a
low refrigerant
charge in
the system
and more
refrigerant
is required.
This
check
should
be made
with
OAT of
70 F
or higher
and
with
the air
conditioner
operating.
i. If
more
refrigerant
must
be added
to
the system,
open
the
low pressure
valve and
increase
engine
speed
to 2000
RPM
and
observe
the
sight
glass.
After
the sight
glass
has
cleared,
close
the
low
pressure
valve
and
observe
the
pressure
gauges.
At 1000
RPM
the
gauge
pressure
should
be 15 to
20 psi
on the
low side
and
150 to
200 on
the high
side.
Issued:
1/3/78
ACCESSORIES
AND
UTILITIES
2K8

Piper Lance II Specifications

General

Manufacturer	Piper Aircraft
Max Takeoff Weight	3, 600 lb (1, 633 kg)
Crew	1
Horsepower	300 hp
Seats	6
Length	27 ft 7 in (8.41 m)
Capacity	5 passengers