Lotus TURBO ESPRIT Service Manual page 585

Page 70
SECTION PB
Pipes, flexible end connec tions and components, MUST be capped immedi-
ately they are opened to prevent the ingress of moisture and/or dirt.
A11 replacement components
and
flexible end connections are sealed when
new, and should only be opened IMMEDIATELY
PRl O R TO
FITTING, A N D
AT
ROOM
TEMPERATURE, to prevent condensation of any moisture which
may enter when the sealing
is
removed.
The receiver-drier should be the
LAST
component to be connected, this i s to
ENSURE optimum dehydration and maximum moisture protection of the
system.
Precautions MUST be taken to prevent damage to fittings and connections;
minute damage could cause a leak due to the high pressures used i n the
system. ALWAYS USE TWO SPANNERS
O F
THE CORRECT SIZE (one on
each union nut), when releasing or tightening pipes, or connections.
This
is purticurlarly important with the pipes on the condenser as
this
unit i s con-
structed from aluminium.
A l l joints should be coated with refrigeration o i l
BEFORE
making any
connections, as this w i l l aid seating.
A l l pipes and haes MUST
BE FREE
from any kinking. The efficiency of the
system can be impaired by a single kink, or restriction, Flexible hoses
should not be bent to a radius which
i s
less than ten times the diameter of
the hose.
PB.5
-
CHARGING UNIT WITH REFRIGERANT
The procedure for charging the air conditon system
is
supplied by the manufacturer of the
charging trolley used; follow this procedure carefully.
Before charging the system i t i s first necessary to evacuate the system for the following
reasons:
1
A l l air is removed from the system to ensure i t can be fully charged.
2. A l l moisture i s removed, which could b e harmful to the system.
3.
It
provides
a
means of checking for leaks, which m y occur i n a faulty
amnection.
Evacuate the system to a vacuum to
28
inches of mercury (28in Hg) for
NOT
LESS THAN
20 minutes. The hold period of 20 minutes w i l l allow any leaks to be seen easily and
purge the system of any moisture
.