Robinair 178012K Recovery, Recycling, Recharging Unit - Manual (Page 5)

Model 178002K/178012K Recovery/Recycling/Recharging Unit
3
GENERAL OPERATING GUIDELINES
• The voltage at the unit must be ±10% of the unit’s rated voltage. Extension cords must
be a minimum of 14 AWG and kept as short as possible.
• To interrupt any procedure (other than clearing), press HOLD/CONT. Press
HOLD/CONT again to resume operation.
• The system oil should be drained at the end of every recovery or recycling procedure,
during the clearing process, or whenever oil is visible in the sight glass.
• The indicator light will tell you the state of the refrigerant coming into the unit during
recovery. ON is liquid, OFF is vapor. The light is not used for recycling since the
refrigerant coming from the tank will always be a liquid.
• Some tanks have slightly different valve configurations. Be sure to connect the red
hose to the GAS (vapor) valve and connect the blue hose to the LIQUID valve.
• To ensure that the scale readings are as accurate as possible, be sure the tank is not
touching the sides of the cart before each procedure.
• To minimize mixing of refrigerants, follow the steps in Changing Refrigerant Types
when switching between refrigerant types.
• When the unit is first turned on, the display shows either:
“134a” — Indicates R-134a automotive refrigerant using 1 /
2
” Acme fittings.
“R12” — Indicates all other refrigerant types using 1 /
4
” flare fittings.
“door” — Indicates the unit has been cleared; select R-12 or R-134a.
Be sure you have selected the correct refrigerant type.
• Be sure to use the correct hose set for the refrigerant type selected:
Hose Set Tank Hoses (3) System Hoses (2)
R-134a automotive 36”, 1 /
2
” Acme with 96”, one Quick Seal
double Quick Seal with one quick coupler
R-12 automotive 36”, 1 /
4
” flare with 96”, 1 /
4
” flare with
double Quick Seal double Quick Seal
All other refrigerant types 36”, 1 /
4
” flare with 96”, 1 /
4
” flare with
single Quick Seal ball valve
Introduction
• Present UL approval addresses refrigerants R-12 and R-134a. UL approval is
pending for all other refrigerants including new substitutes and blends.