7–1
T-340
SECTION 7
SERVICE
NOTE
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.
WARNING
!
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
2)
for leak
testing or operating the product. Charge only with R-134a: Refrigerant must conform to AHRI
Standard 700 specification.
NOTE
Annual maintenance procedures for PrimeLINE units 69NT40-561 can be found in the
, 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 herein beginning with refrigeration system service, then refrigeration system com
-
ponent 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
) is used to determine system operating pressure, add refrigerant charge,
and to equalize or evacuate the system.
Figure 7.1 Manifold Gauge Set
1) Discharge Pressure Valve (shown
backseated)
2) Discharge Pressure Gauge
3) Suction Pressure Gauge
4) Suction Pressure Valve (shown
frontseated)
5) Low Side Connection
6) Utility Connection to:
a. Refrigerant Cylinder
b. Vacuum Pump
c. Oil Container
7) High Side Connection
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2
3
4
5
6
7
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