Refrigerant System Pressure Access Ports - Carrier 50FC 04 Series Service And Maintenance Instructions

Refrigerant System Pressure Access Ports

There are two access ports in the system: on the suction tube near
the compressor and on the discharge tube near the compressor.
These are brass fittings with black plastic caps. The hose connec-
tion fittings are standard 1/4 in. SAE male flare couplings.
The brass fittings are two-piece high flow valves, with a receptacle
base brazed to the tubing and an integral spring-closed check
valve core screwed into the base. See Fig. 20. This check valve is
SEAT
5/8" HEX 0.47
1. Third-party trademarks and logos are the property of their respective owners.
1/2-20 UNF RH
0.596
30°
Washer
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. 20 — CoreMax
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 (10.85 ±
1.1 Nm) of torque; do not over-tighten.
CORE
(Part No. EC39EZ067)
O-Ring
1/2" HEX
1
Access Port Assembly
14
45°
Depressor per AHRI 720
+.01/–.035
From Face of Body
7/16-20 UNF RH