Toshiba HFC R407C, Service Manual

Page: 5 / 80

5
Introduction
Precautions
Precautions for R-407C outdoor units
Liquid receiver fusible plug
In the event of the system being subjected to abnormal conditions it is protected by a fusible plug,
positioned on the liquid receiver, within the outdoor unit. It is rated to fail at 70°C.
Position of
fusible plug
System pressure measurement
To measure the system’s high and low pressures, connect a gauge manifold to the corresponding access
port as indicated below.
Low pressure
access port
High pressure
access port
Explanation of Toshiba serial number
A serial label is attached to all Toshiba air conditioning units. Located on the label is an 8-digit number,
which represents the month, year and batch number of the manufactured unit. A breakdown of the 8-digit
number is defined below.
2 4 4 8 0 0 0 1
}
j j j
Year of
manufacture
2001 = 1
2002 = 2
2003 = 3
Site of
manufacture
8 = Plymouth
Month of
manufacture
41 = Jan.
42 = Feb.
43 = Mar.
44 = Apr.
45 = May
46 = Jun.
47 = Jul.
48 = Aug.
49 = Sep.
50 = Oct.
51 = Nov.
52 = Dec.
Model batch serial number