F3D3
Series
Service Manual Refrigeration / Section 4.5
Questions? Call Franke Technical Support Group For Your Area. Copyright
2012 Franke, Inc. All rights reserved.
4.5 Repair System Refrigerant Leak
F3D3 & F3D3S Models ONLY
1)
Roll unit out to disconnect power at outlet. [Pull plug.]
2)
Position a stepladder or stable work platform to access
the compressor/condenser compartment from the top.
3)
Repair or replace refrigerant lines as needed.
NOTE
:
Replacement of the filter/dryer is recommended
whenever the refrigeration system is opened for repair.
4)
NOTE:
Recover any residual refrigerant and ensure line
pressure is equalized to zero, before opening the
refrigeration system.
5)
NOTE:
The system may need to be drained completely
and new Polyol Ester Oil added. If required, the old
Polyol Ester Oil should be recovered and disposed of in
accordance with Federal Laws covering the handling of
hazardous materials.
6)
When resealing the system, use a continuous Nitrogen
charge to assure no contaminants enter the system,
especially when brazing.
7)
After resealing is complete, repressurize the system and
check for leaks.
8)
Before recharging the system, pull a vacuum equivalent
to 30 inches [760 mm] of Mercury, for a minimum of 30
minutes.
9)
Recharge the system with R404A refrigerant, per
nameplate label specification.
Test
operation of Refrigeration System by:
10) Plug in unit power cord to power source.
11) Turn ON unit at Main Power-ON Switch.
12) If compressor starts and brings the Freezer compartment
down to the normal operating temperature range of -18
to -23
°
C [0 to -10
°
F], proceed to Step 13.
13) Return Dispenser to normal operating position and lock
front casters.
[Photo 1 – From back]
Access the refrigeration
compartment from back or top.
[Photo 2]
Recover any residual refrigerant
and ensure line pressure is zero
before opening system.
[Photo 3]
When resealing the system or
repairing leaks, use continuous
Nitrogen charge to keep
contaminants out.
Rev. 1 6/2012
Tools/Supplies Required
:
Refrigerant Recovery Tank
& fittings
Nitrogen Charge Tank
R404A Refrigerant
Brazing Torch, etc.
IMPORTANT
: Any residual refrigerant charge should be
recovered in strict accordance with all environmental laws.
