Refrigerant System Pressure Access Ports - Carrier WeatherExpert 50LC 07 Series Service And Maintenance Instructions

11. Thoroughly rinse all surfaces with low velocity clean water
using downward rinsing motion of water spray nozzle. Pro-
tect fins from damage from the spray nozzle.
EVAPORATOR COIL METERING DEVICES
These units use thermal expansion valves (TXV).

Refrigerant System Pressure Access Ports

There are two access ports in each system - on the suction tube
near the compressor and on the discharge tube near the compres-
sor. These are brass fittings with black plastic caps. The hose con-
nection fittings are standard
1
SEAT
5/8" HEX
0.47
1. CoreMax is a registered trademark of Fastest, Inc.
/ -in. SAE Male Flare couplings.
4
1/2-20 UNF RH
0.596
30°
This surface provides a metal to metal seal when
torqued into the seat. Appropriate handling is
required to not scratch or dent the surface.
Fig. 8 — CoreMax
The brass fittings are two-piece High Flow valves, with a recepta-
cle base brazed to the tubing and an integral spring-closed check
valve core screwed into the base. (See Fig. 8.) This check valve is
permanently assembled into this core body and cannot be serviced
separately. Replace the entire core body if necessary. Service tools
are available from RCD that allow the replacement of the check
valve core without having to recover the entire system refrigerant
charge. Apply compressor refrigerant oil to the check valve core's
bottom O-ring. Install the fitting body with 96 ± 10 in-lb of torque;
do not overtighten.
CORE
(Part No. EC39EZ067)
WASHER
O-RING 1/2" HEX
Access Port Assembly
1
6
45°
DEPRESSOR PER AHRI 720
+.01/-.035
FROM FACE OF BODY
7/16-20 UNF RH