Foodservice Group Multiplex Beverage Equipment Installation Instructions for CO2 Tank Conversion Kit P.N. 002247, P.N. 0022505, and P.N. 0025099 Introduction The following instructions cover the installation and operating procedures of a Multiplex CO2 tank conversion kit. This kit is designed for use with a Multiplex Model 37K and Model 44K Refrigeration Units and Stands only. Model 37K installation. Locate the tank bracket and chain assembly provided with kit. 2. Mount the tank bracket to the Model 37K unit stand with the four (4) /4-20 x /2" Hex Head screws and nuts provided in kit as shown in figure. Note: Since bracket is not supplied with back-up regulator kit, the CO2 tank(s) should be secured to the wall or stand using eyebolt with chain supplied. Chain is on the upper third of the CO2 tank(s). CO2 Caution Label Nylon Clamp Screw and Washer /4-20 x /2" Hex Head Screw and Nut Tank Bracket and Chain Figure Manitowoc Beverage Equipment 200 Future Drive Sellersburg, IN 4772-868 Tel: 82.246.7000, 800.367.4233 Fax: 82.246.9922 www.manitowocbeverage.com In accordance with our policy of continuous product development and improvement, this information is subject to change at any time without notice. EI2247 Revision B (KAK) 3 August, 200
Caution: To Avoid Serious Injury Important: Read the following warnings before beginning an installation. Failure to do so may result in possible death or serious injury. NOT NOT NOT NOT NOT Adhere to all National and Local Plumbing and Electrical Safety Codes. Turn off incoming electrical service switches when servicing, installing, or repairing equipment. Check that all flare fittings on the carbonation tank(s) are tight. This check should be performed with a wrench to ensure a quality seal. Inspect pressure on Regulators before starting up equipment. Protect eyes when working around refrigerants. Use caution when handling metal surface edges of all equipment. Handle CO2 cylinders and gauges with care. Secure cylinders properly against abrasion. Store CO2 cylinder(s) in well ventilated areas. Throw or drop a CO2 cylinder. Secure the cylinder(s) in an upright position with a chain. Connect the CO2 cylinder(s) directly to the product container. Doing so will result in an explosion causing possible death or injury. Best to connect the CO2 cylinder(s) to a regulator(s). Store CO2 cylinders in temperature above 25 F (5.7 C) near furnaces, radiator or sources of heat. Release CO2 gas from old cylinder. Touch Refrigeration lines inside units, some may exceed temperatures of 200 F (93.3 C). Notice: Water pipe connections and fixtures directly connected to a potable water supply shall be sized, installed and maintained in accordance with Federal, State, and Local codes. 2 EI2247 Revision B (KAK) 3 August, 200
3. Position two (2) CO2 tanks against the edge of the tank bracket. Secure CO2 tanks in place with chains (refer to figure 2). 4. Locate the two (2) primary CO2 tank regulators labeled A and B, and gaskets supplied with the kit. Attach a primary CO2 tank regulator and gasket to each CO2 tank as shown in figure 2. Note: If the CO2 tanks with metric threads are supplied, the nuts on the regulators must be changed. To replace the nuts, remove the nipple and nut assembly from the regulator. Locate the metric nuts (supplied) and reinstall the nipple and nut assembly. Be sure to apply the thread sealer to nipple threads to avoid leaks. 5. Open the Model 37K Control Panel door. Remove and discard the /4" MPT x 3 /8" MF adaptor fitting located at the top of the CO2 manifold. Replace adaptor fitting with the / 4" MP x 3 /8" OD compression fitting and compression nut supplied in kit (refer to figure 3). Note: When installing backup regulator kit, you must use the /4" MPT x 3 /8" MF adaptor on side "B" of the tank Change-over Valve assembly. 6. Locate the tank Change-over Valve assembly and the one () 3 /8 OD piece of tubing supplied in kit. Cut tubing to size and insert the tubing into the Change-over Valve compression fitting. Do not tighten compression fitting nut at this time (refer to figure 3). 7. Remove the screw, handle, and retainer nut or ring from the CO2 Change-over Valve. Install the Change-over Valve in the control panel opening labeled CO2 Change-over Valve tank A & B. Tighten the compression nuts at the Changeover Valve and the CO2 manifold. Replace retainer nut, handle, and screw (refer to figure 3). Primary CO2 Tank Regulators and Gaskets 8 ft (2.4 m) Line Figure 2 CO2 Tanks 8. Locate the two (2) 8 ft (2.4 m) line assemblies supplied with the kit. Attach the end of the line assembly with swivel nut fitting to the elbow fitting of the two (2) high pressure regulators (refer to figure 2). 9. Neatly route the opposite ends of the two (2) 8 ft line assemblies up through the opening in the Control Panel door. Attach the line coming from the primary regulator marked A to the Barb fitting on the A side of the Change-over Valve. Attach the line coming from regulator marked B to the Barb fitting on the B side of the Change-over Valve (refer to figure 3). 3 /8 OD Tubing Tank Change-over Valve /4" MPT x 3 /8" MF Adapter Remove and discard. Screw, Handle, and Retainer Ring /4" MPT x 3 /8" OD Compression Fitting Figure 3 EI2247 Revision B (KAK) 3 August, 200 3
B Side A Side 8 ft Line CO2 Caution Label Tank Bracket and Chain /4" - 20 x /2" Hex Head Screw and Nut Figure 4 Figure 5 0. Attach the two (2) 8 ft line assemblies to the refrigeration unit stand with the nylon clamp, screw, and washer provided in kit (refer to figure ).. Attach the CO2 warning label to the side of the refrigeration unit (refer to figure ). 2. Once system is installed, turn the handle of the tank Change-over Valve assembly to the A position. Turn on the CO2 tank and allow CO2 to enter the system. Check the A tank pressure gauge. It should read 90 psi (6.2 bar). If not, adjust the regulator accordingly. Turn the handle of the tank Change-over Valve to the B position and repeat this procedure. Model 44K installation. Locate the tank bracket and chain assembly provided with kit. 2. Mount the tank bracket to the Model 44K unit stand with the four (4) /4-20 x /2" Hex Head screws and nuts provided in kit as shown in figure 5. Note: If the CO2 tanks with metric threads are supplied, the nuts on the regulators must be changed. To replace the nuts, remove the nipple and nut assembly from the regulator. Locate the metric nuts (supplied) and reinstall the nipple and nut assembly. Be sure to apply the thread sealer to nipple threads to avoid leaks. 3. Position two (2) CO2 tanks against the edge of the tank bracket. Secure CO2 tanks in place with chains (see figure 6). 4. Locate the two (2) primary CO2 tank regulators labeled A and B, and gaskets supplied with the kit. Attach a primary CO2 tank regulator and gasket to each CO2 tank as shown in figure 6. 5. Locate the tank Change-over Valve assembly provided in kit. Using the #0-32 screws provided in kit, mount the valve on unit control panel (location for valve will be marked "CO2 Change-over Valve - Tanks A and B"). 6. Locate the two (2) 8 ft line assemblies supplied with the kit. Attach the end of the line assembly with swivel nut fitting to the elbow fitting of the two (2) high pressure regulators (refer to figure 6). 8 ft Line Figure 6 CO2 Tanks Primary CO2 Tank Regulators and Gasket 4 EI2247 Revision B (KAK) 3 August, 200
7. Neatly route the opposite ends of the two (2) 8 ft line assemblies underneath the top of the stand and to the unit's control panel. Attach the line coming from the primary regulator marked A to the fitting on the A side of the Change-over Valve. Attach the line coming form the regulator marked B to the fitting on the B side of the Change-over Valve (refer to figure 7). Note: When installing backup regulator kit, a /4" MPT x 3 /8" MF adaptor should be installed on the B side of the Changeover Valve. 8. Attach the two (2) 8 ft line assemblies to the refrigeration unit stand with the nylon clamp, screw, and washer provided in kit. 9. Locate the /4" line assembly provided in kit. Attach one () end of the line assembly to the remaining side of the Change-over Valve. Route remaining end of line assembly to the CO2 Supply Manifold and trim excess line accordingly.. Connect the swivel nut adaptor (supplied in kit) to the end of /4" line assembly. Secure with tab clamp. Route and connect the line assembly to the CO2 Supply Manifold (refer to figure 7). 2. Attach the CO2 warning label to the side of the refrigeration unit (refer to figure 5). 3. Once system is installed turn the handle of the tank Change-over Valve to the A position. Turn on the CO2 tank and allow CO2 to enter the stem. Check the A tank pressure gauge. It should read 90 psi (6.2 bar). If not, adjust the regulator accordingly. Turn the handle of the tank Change-over Valve to the B position and repeat this procedure. CO2 Supply Manifold B Side A Side To CO2 Supply Manifold Figure 7 EI2247 Revision B (KAK) 3 August, 200 5