Piper Arrow IV Turbo Maintenance Manual page 156

REFRIGERANT LINES AND ROUTING.
The refrigerant lines in this aircraft are flexible high pressure hoses and should be handled accordingly.
The hoses in the power plant area are routed so as to provide maximum protection from heat and abrasion.
They couple at the firewall to hose routed through the two inboard, external hat section on the bottom of the
fuselage, up through the floor to the condenser and evaporator in the tail cone. The discharge is in the right hat
section and the suction in the left.
Before any of the hose couplings are uncoupled, the system must
be completely discharged. (See Discharging.)
RECEIVER-DEHYDRATOR.
RECEIVER-DEHYDRATOR REMOVAL.
This unit is mounted on the inboard side of the evaporator assembly housing.
1. Discharge the system of all refrigerant. (See Discharging.)
2. Uncouple the refrigerant lines at the receiver-dehydrator. (See Special Servicing Procedures, B-7.)
3. Remove the clamp attaching the unit to the evaporator housing.
This part is not serviceable, it must be replaced. The receiver-
dehydrator should be replaced when the system has been
operated without a charge or is left open.
RECEIVER-DEHYDRATOR INSTALLATION.
1. Slip the mounting bracket around the receiver and put it in place on the evaporator housing with the
tube fitting on top. Align the fittings to the proper line before securing the mounting bracket.
2. Evacuate and recharge the system in accordance with Evacuating the System and Charging the
System.
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
—NOTE—
—NOTE—
—NOTE—
Torque the fittings. (See Chart 2102.)
1G12
21-50-28
Page 21-37
December 1, 1978