Service; Section Layout; Manifold Gauge Set; Figure 7.1 Manifold Gauge Set - Carrier PrimeLINE 69NT40-561-200 Operation And Service Manual

Use a refrigerant recovery system whenever removing refrigerant. When working with refrigerants you
must comply with all local government environmental laws. In the U.S.A., refer to EPA section 608.
EXPLOSION HAZARD Failure to follow this WARNING can result in death, serious personal
injury and / or property damage. Never use air or gas mixtures containing oxygen (O
testing or operating the product. Charge only with refrigerants R-134a or R-513A as specified
for the unit model number: Refrigerant must conform to AHRI Standard 700 specification.
Annual maintenance procedures for PrimeLINE units 69NT40-561 can be found in the
Maintenance Manual, located in the Literature section of the Container Refrigeration website. To find the
manual from the Literature section, click on Container Units > All Container Units > Operation.
7.1

SECTION LAYOUT

Service procedures are provided in this section beginning with refrigeration system service, then refrigeration sys-
tem component service, electrical system service, temperature recorder service and general service. Refer to the
Table of Contents to locate specific topics.
7.2

MANIFOLD GAUGE SET

The manifold gauge set (see
and to equalize or evacuate the system.
1. Suction Pressure Valve (shown backseated)
2. Suction Pressure Gauge
3. Discharge Pressure Gauge
4. Discharge Pressure Valve (shown frontseated)
5. High Side Connection
When the Suction Pressure Valve (1) is frontseated (turned all the way in), the suction (low) pressure can be
checked at the Suction Pressure Gauge (2).
When the Discharge Pressure Valve (4) is frontseated, the discharge (high) pressure can be checked at the Dis-
charge Pressure Gauge (3).
When both valves are backseated (all the way out), high pressure vapor will flow into the low side.
When the Suction Pressure Valve (1) is open and the Discharge Pressure Valve (4) shut, the system can be
charged through the Utility Connection (6). Oil can also be added to the system.
SECTION 7

SERVICE

NOTE
WARNING
!
NOTE
Figure 7.1) is used to determine system operating pressure, add refrigerant charge,

Figure 7.1 Manifold Gauge Set

2
1
7
- - - - -
3
4
5
6
6. Utility Connection to:
a. Refrigerant Cylinder
b. Vacuum Pump
c. Oil Container
7. Low Side Connection
7–1
) for leak
2
62-10327 Annual
T-362