Piper Lance II User Manual

LANCE
II SERVICE
MANUAL
989
COMPOUND
GAGE
50
P.S.I.
PRESSURE
GAGE
SCHRADER
VALVE
CLOSED
I SCHRADER
VALVE
GAGE
SET
REFRIGERANT
CONTAINER
OPEN
TO
50
P.S.I.
EVAPORATOR
ASS'Y
THEN
CLOSE
Figure
14-5.
Leak Test
Hookup
NOTE
Evacuate
system
prior
to leak
check.
14-10. LEAK
CHECK - METHOD
I.
a.
Connect
the manifold
gauge
set
into
the system
and
determine
if
there
is any
refrigerant
in the
system.
A
minimum
of
50 psi
refrigerant
pressure
in the
system
is needed
for
leak detection.
(Refer
to
Figure
14-5.)
b. Purge
the
hoses of
air by
allowing
some
refrigerant
to
escape
from the
connections
at
the service
valves.
Then
tighten
connections
at the
service
valve.
c. Close
the
low side
manifold
valve
and open
the high
side
manifold
valve.
d.
Open
the
refrigerant
container
service
valve and
allow
the
pressure
at
the low
side
gauge
to reach
50
psi at which
time
close
the high
side
manifold
valve.
e. Close
the
refrigerant
container
service
valve
and
remove
the
hose
if no
leaks
are
evident.
f. It
is advisable
to
use an
electronic
leak
detector
to check
this
system
instead
of an
open
flame leak
detector
due
to the
possible
presence
of gasoline
fumes in
the engine
area.
g. If
any
leaks
are found,
purge
the
system
of
refrigerant,
make
the necessary
repairs
and check
the compressor
oil.
h.
Add
oil, if required,
(refer
to Paragraph
14-21
and
Table
XIV-III)
then
repeat
steps a
thru
e.
i.
If no
further
leaks are
found,
the
system
may be
evacuated
and
charged.
Refer
to
Paragraphs
14-13
and
14-14.
Issued:
1/3/78
ACCESSORIES
AND
UTILITIES
2K3

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