6-4
S
ERVICE
REPAIRING COPPER COILS
The copper coils used in Hussmann cases may be
repaired in the field. Materials are available from
local refrigeration wholesalers. Hussmann recom-
mends using #15 Sil-Fos for repairs.
REPAIRING ALUMINUM COIL
The aluminum coils used in Hussmann cases may
be easily repaired in the field. Materials are
available from local refrigeration wholesalers.
Hussmann recommends the following solders and
technique:
Solders
Aladdin Welding Products Inc.
P.O. Box 7188
1300 Burton St.
Grand Rapids, MI 49507
Phone: 1-800-645-3413
Fax: 1-800-645-3414
X-Ergon
1570 E. Northgate
P.O. Box 2102
Irving, TX 75062
Phone: 1-800-527-9916
NOTE:
Hussmann Aluminum melts at 1125°F (607°C)
Aladdin 3-in-1 rod at
732°F (389°C)
X-Ergon Acid core at
455°F (235°C)
Technique
1.
Locate Leak.
2.
R
EMOVE ALL PRESSURE
.
3.
Brush area
UNDER HEAT.
4.
Use
P
RESTOLITE TORCH ONLY
. N
UMBER
6
TIP
.
5.
Maintain separate set of stainless steel
brushes and
USE ONLY ON ALUMINUM
.
6.
Tin surface around area.
7.
Brush tinned surface
UNDER HEAT,
thoroughly filling the open pores
around leak.
8.
Repair leak. Let aluminum melt solder,
NOT the torch.
9.
Don’t repair for looks. Go for thickness.
10.
Perform a leak check.
11.
Wash with water.
12.
Cover with a good flexible sealant.
P/N 0446551_A
WWW
.
HUSSMANN
.
COM
Do NOT allow product to sit in a
non-refrigerated area.
WARNING
!