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Flux for use with copper-to-steel connections.
Principal equipment needed for installing this kit is listed in the following table. Equivalent items may
be substituted.
REQUIRED EQUIPMENT
Item
No.
1
Torch, Oxy-fuel (acetylene, propane, etc.)
2
Torch Tips size No. 2 or 3
3
Vacuum pump and gaging with 50-micron blank-off pressure. Alternately a pump
having 28.5; HD minimum.
4
Refrigerant recovery system
5
Charging cylinder, visual indicating type with a refrigerant R-12 or R-502 scale
and temperature correction curve, or a closed container with an accurate scale.
Charging equipment must be accurate to .025 oz.
6
Pinch-off tool
7
Ammeter, clamp-on type 0–50 amp range
8
Voltmeter, 0–300 VAC
9
Ohmmeter, 0–10 and 100,000 ohms
10
Leak detector, capable of detecting at least 1/2-ounce/year.
11
Dry Nitrogen (–75 F dewpoint)
12
Tap line valve (2)
DISASSEMBLY
1. Disconnect electrical power to the unit.
2. Melt ice bank and drain the tank.
3. Remove four screws securing unit top cover, then lift cover straight up off unit.
Unit with sealed evaporator tank only.
A.
Disconnect agitator motor ground wire and power cord.
B.
Disconnect product inlet line swivel nut connectors from product coil line fittings on agitator motor and
cover assembly. MAKE SURE LINES ARE LABELED FOR IDENTIFICATION SO THAT THEY MAY
BE RECONNECTED TO PROPER FITTINGS ON COVER ASSEMBLY.
C.
Remove hex nuts securing product coil line fittings to cover assembly.
D.
Remove screws securing cover assembly to unit, then lift cover straight up to remove. BE CAREFUL
NOT TO LOSE RUBBER WASHERS ON COIL FITTINGS.
189159001
Name and Description
2
Use
Brazing
Brazing
Removing air
from system
Removing refrig-
erant from sys-
tem
Charging the
reworked system
To seal process
lines after
charging
To measure
power
To measure line
voltage
To check resis-
tance of electrical
circuitry
To detect refriger-
ant leaks
To purge system
before charging
To make connec-
tion to refrigerant
recovery system
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