Robinair 342000 Refrigerant Service Solution - Manual (Page 11)

9
342000 Refrigerant Service Solution
Low Side
Pressure Indicating
Needle (black)
High Side
Follower
Needle (red)
High Side Pressure
Indicating Needle
(black)
(adjust so red needle rests
below the black needle)
(adjust so red
needle rests
above the black
needle)
PRESSURE GAUGES
Both the high and low side gauges are equipped with red "follower" needles to
show the maximum and the minimum pressures reached during operation. The
follower is carried with the pressure gauge to the highest or lowest operating
pressure and stays there when the regular needle indicates other pressures.
1. The follower on the low side gauge should be adjusted so it rests on the
bottom side of the black needle when the A/C system is not in operation.
2. The follower on the high side gauge should be adjusted so it rests on the top
side of the black needle when the A/C system is not in operation.
When set up this way, the follower will be carried to the highest pressure or lowest
pressure registered by the individual gauge.
Pressing the UP/DOWN and RIGHT/LEFT keys moves the cursor on the screen
in that direction (Up, Down, Right, or Left). In addition, during numeric program-
ming, pressing the UP arrow increases the number. Pressing the DOWN arrow
decreases the number.
Use these keys to change the evacuation time, vacuum level, or recharge weight if
you want an amount different than the default one shown on the display. These keys
are also used to enter other numeric values, such as your area’s elevation above sea
level.
NUMBER KEYS
UP/DOWN AND LEFT/RIGHT ARROW KEYS
Low Side
Follower
Needle (red)
Set
Introduction