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11. Purge system at least 10-minutes with dry nitrogen prior to brazing.
12. Adjust nitrogen flow until a very small amount (less than 1-psi) of nitrogen is flowing through refrigeration
system.
13. While nitrogen is slowly flowing through refrigeration system, solder in lower part of suction line assembly
into system. STRAINER DRYER, DUAL INLET (item 8) must be installed during soldering operation.
14. Disconnect dry nitrogen from refrigeration system, then clean all flux from brazed joints with cold water.
LEAK CHECK
Leak check system including newly brazed joints. If joint is suspected of a leak, tape envelope made of poly
over joint to trap leaking refrigerant. Wait 10-minutes, then use leak detector to check air inside envelope for
traces of refrigerant.
DO NOT VENT REFRIGERANT TO ATMOSPHERE
CHARGING
1. Pressurize refrigeration system to saturation with clean dry R-12 refrigerant gas.
2. Exhaust refrigerant and evacuate. If high-vacuum pump is used, evacuate to at least 200-microns (prefer-
ably 100-microns) prior to charging.
3. Charge refrigeration system with 10-ounces of clean dry R-12 refrigerant.
ASSEMBLY
1. Push corner of unit (side and front panel) together.
2. Install THREAD ROLLING SCREWS (item 6) in first four holes (top to bottom) to secure corner. NEW
SCREWS ARE SHORTER IN LENGTH THAN ORIGINALS AND WILL NOT PUNCTURE REFRIGERA-
TION TUBES ROUTED UP THROUGH CORNER OF UNIT.
3. Install remaining screws removed in disassembly steps 10 and 11 securing front and side panels to unit.
4. Unit without sealed evaporator tank.
A.
Very carefully, place product coil basket and agitator motor in unit. Pull excess unit product inlet lines
back down through unit cabinet.
B.
Secure agitator motor in unit with four screws (two each side).
C.
Place ice bank control sensing bulb in product coil basket holder. BE CAREFUL NOT TO KINK CAP-
ILLARY TUBE. COIL EXCESS TUBE AND PLACE IN A SAFE AREA.
D.
Install new ANODE (item 2) in product coil basket holder.
E.
Connect anode wire to evaporator tank using aluminum SHEET METAL SCREW (item 3).
F.
Connect agitator motor power cord.
G.
Install dispensing valves, plate gasket, and plate on unit and secure with shank nuts.
H.
Connect product coils product lines to backs of dispensing valves sleeves.
5. Unit with sealed evaporator tank.
A.
Very carefully, place product coils basket in unit.
Содержание Universal 750 Pre-Mix
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