Heavy Duty Balanced Opposed Compressors - Ariel Corporation

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FOR MODELS: JGZ AND JGU SECTION 2 - COMPRESSOR INSTALLATION CAUTION: When lifting a compressor designed for lifting lugs, use ONLY Ariel provided or approved lugs. Be sure the lugs are held In place with the proper grade of cap screws, and properly tightened. Lifting cable spreaders are required perpendicular to crankshaft axis. Be sure the crane capacity is adequate. Setting the Compressor 1. Be sure the skid is level. 2. Move the compressor into place on the skid. 3. Level stationary compressors to Table 2-1 requirements. For compressors subject to transient motion on ships or offshore platforms, level compressors to table requirements when at rest. Be sure the pre-grout alignment is relatively close so that the equipment movement will be minimal and within the bolting, foot, push pads or grout box allowance. 4. Grout as required and allow grout to set. With the compressor cylinders mounted but unsupported and with no piping or pulsation damping bottles attached, tighten the frame foot hold down bolting to skid at full fastener torque. Refer to Ariel ER-26, Appendix A in the Ariel Packager’s Standards for proper frame foot torque values. Leveling Limits for Compressors The limits in Table 2-1 assume that the running oil level is maintained between one half and two-thirds the height of the sight glass, except for dry sump compressors. Length leveling limits apply axially (parallel to crankshaft) and width limits apply horizontally (parallel to the piston rod) within the length and width of the frame. TABLE 2-1 Maximum Angle from a Horizontal Plane for Leveling Compressors Maximum Angle from a Horizontal Plane - In/Ft of Distance (mm/m) [ ° ] Frame 1 or 2 Throw 4 Throw 6 Throw Length Width Length Width Length Width JGM:N 0.420 (35) [2°] 0.500 (42) [2.4°] N/A JGP:Q 0.500 (42) [2.4°] 0.500 (42) [2.4°] N/A JG 0.460 (38) [2.2°] 0.500 (42) [2.4°] 0.215 (18) [1.0°] 0.500 (42) [2.4°] N/A JGA 0.500 (42) [2.4°] 0.500 (42) [2.4°] 0.310 (26) [1.5°] 0.500 (42) [2.4°] 0.190 (16) [0.9] 0.500 (42) [2.4°] JGW:R 0.095 (7.9) [0.45°] 0.500 (42) [2.4°] 0.025 (2.1) [0.1°] 0.500 (42) [2.4°] N/A JGJ 0.420 (35) [2°] 0.500 (42) [2.4°] 0.105 (8.7) [0.5°] 0.450 (37) [2.1°] 0.065 (5.4) [0.3°] 0.460 (38) [2.2°] JGH 0.375 (31) [2°] 0.500 (42) [2.4°] 0.160 (13) [0.8°] 0.500 (42) [2.4°] N/A JGE:T 0.440 (37) [2.1°] 0.500 (42) [2.4°] 0.155 (13) [0.7°] 0.500 (42) [2.4°] 0.090 (7.5) [0.4°] 0.310 (26) [1.5°] JGK 0.105 (8.7) [0.5°] 0.500 (42) [2.4°] 0.035 (2.9) [0.2°] 0.500 (42) [2.4°] 0.020 (1.7) [0.1°] 0.310 (26) [1.5°] JGC 0.270 (22) [1.3°] 0.460 (38) [2.2°] 0.100 (8.3) [0.5°] 0.460 (38) [2.2°] 0.060 (5.0) [0.3°] 0.180 (15) [0.9°] JGD 0.500 (42) [2.4°] 0.460 (38) [2.2°] 0.205 (17) [1.0°] 0.460 (38) [2.2°] 0.125 (10) [0.6°] 0.180 (15) [0.9°] JGZ 0.500 (42) [2.4°] 0.500 (42) [2.4°] 0.380 (25) [1.8°] 0.500 (42) [2.4°] 0.240 (20) [1.1°] 0.500 (42) [2.4°] JGU 0.500 (42) [2.4°] 0.500 (42) [2.4°] 0.475 (40) [2.3°] 0.500 (42) [2.4°] 0.300 (25) [1.4°] 0.500 (42) [2.4°] JGB N/A 0.250 (21) [1.2°] 0.075 (6.2) [0.4°] 0.180 (15) [0.9°] 0.075 (6.2) [0.4°] PAGE 2 - 2 7/09
FOR MODELS: JGZ AND JGU SECTION 2 - COMPRESSOR INSTALLATION TABLE 2-1 Maximum Angle from a Horizontal Plane for Leveling Compressors Frame Maximum Angle from a Horizontal Plane - In/Ft of Distance (mm/m) [ ° ] 1 or 2 Throw 4 Throw 6 Throw Length Width Length Width Length Width JGV N/A 0.235 (20) [1.1°] 0.075 (6.2) [0.4°] 0.150 (12) [0.7°] 0.075 (6.2) [0.4°] KBB:V N/A 0.165 (14) [0.8°] 0.500 (42) [2.4°] 0.120 (10) [0.6°] 0.500 (42) [2.4°] Aligning Main Bearing Bores To maximize main bearing life expectancy and help avoid crankshaft failures, it is essential that compressor frames be installed and remain in position so that main bearing bores can be maintained in proper alignment. Ariel has established this procedure in an effort to facilitate the proper installation of compressor frames and provide a means of periodic inspection. 1. The top cover mounting surface of an Ariel compressor frame is manufactured in a flat plane to a close tolerance. This surface is also held to a close tolerance with the main bearing bores and the bottom of the compressor feet. When the frame feet are supported so that the top-cover-mounting surface is flat "in plane", the main bearing bores are in alignment. 2. Top-cover-mounting surface flatness or soft foot check may be used for frame sizes up to and including JGU:Z/2-throw frames to be sure main bearing bores are in proper alignment, except for the JGI which uses only soft foot. 3. On JGU:Z:B:V:KBB:V/4-throw and /6-throw frames the top plane flatness and soft foot checks are both required to be sure the main bearing bores are in proper alignment. 4. Measurements for flatness are to be taken on the top surface of both sides of the frame rails at each anchor bolt or for frames with pairs of anchor bolts between each pair of anchor bolts, with top covers and gaskets removed (see Figure 2-1). Readings between any two adjacent points are to be within 0.002 in. (0.05 mm). The total accumulated out of plane flatness for proper alignment is to be within the flatness tolerances listed in Table 2-1. 7/09 PAGE 2 - 3
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Heavy Duty Balanced Opposed Compressors - Ariel Corporation

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