b. If the machine fails this test, check for large leaks (Step 2b).
c. Dehydrate the machine if it passes the standing vacuum test. Follow the procedure in the
Machine Dehydration section. Charge machine with refrigerant (see Pumpout and
Refrigerant Transfer Procedures,
Machines with Storage Tanks
section, Steps 1a-e).
7. If a leak is found, pump the refrigerant back into the storage tank, or if isolation valves are
present, pump into the non-leaking vessel (see
Pumpout and Refrigerant Transfer
Procedures
section).
8. Transfer the refrigerant until machine pressure is at 18 in. Hg (40 kPa absolute).
9. Repair the leak and repeat the procedure, beginning from Step 2h to ensure a leaktight
repair. (If machine is opened to the atmosphere for an extended period, evacuate it before
repeating leak test.)
Standing Vacuum Test
When performing the standing vacuum test, or machine dehydration, use a manometer or a
wet bulb indicator. Dial gages cannot indicate the small amount of acceptable leakage during a
short period of time.
1. Attach an absolute pressure manometer or wet bulb indicator to the machine.
2. Evacuate the vessel (see
Pumpout and Refrigerant Transfer Procedures
section) to at least
18 in. Hg vac, ref 30-in. bar (41 kPa), using a vacuum pump or the pumpout unit.
3. Valve off the pump to hold the vacuum and record the manometer or indicator reading.
Содержание PC211
Страница 317: ...Figure 1 19XL Identification ...
Страница 318: ...Figure 2A Front View Typical 19XL Components Design I See next page for Rear View ...
Страница 319: ...Figure 2A Rear View Typical 19XL Components Design I ...
Страница 320: ...Figure 2B Front View Typical 19XL Components Design II See next page for Rear View ...
Страница 321: ...Figure 2B Rear View Typical 19XL Components Design II ...
Страница 322: ...Figure 3 Refrigerant Motor Cooling and Oil Cooling Cycles ...
Страница 323: ...Figure 4 Lubrication System ...
Страница 324: ...Figure 5 Cutler Hammer Solid State Starter Internal View ...
Страница 325: ...Figure 6 Benshaw Inc Solid State Starter Internal View ...
Страница 326: ...Figure 7 Typical Starter Front View Solid State Starter Shown ...
Страница 327: ...Figure 8 19XL Controls and Sensor Locations ...
Страница 328: ...Figure 9 Control Sensors Temperature ...
Страница 329: ...Figure 10 Control Sensors Pressure Transducer Typical ...
Страница 330: ...Figure 11 Control Panel Front View with Options Module ...
Страница 331: ...Figure 12 Power Panel with Options ...
Страница 332: ...Figure 13 LID Default Screen ...
Страница 333: ...Figure 14 LID Service Screen ...
Страница 334: ...Figure 15 Example of Point Status Screen Status01 ...
Страница 335: ...Figure 16 19XL Menu Structure ...
Страница 336: ...Figure 17 19XL Service Menu Structure ...
Страница 337: ...Figure 18 Example of Time Schedule Operation Screen ...
Страница 338: ...Figure 19 Example of Set Point Screen ...
Страница 339: ...Figure 20 19XL Hot Gas Bypass Surge Prevention ...
Страница 340: ...Figure 21 19XL with Default Metric Settings ...
Страница 341: ...Figure 22 Example of Attach to Network Device Screen ...
Страница 342: ...Figure 23 Example of Holiday Period Screen ...
Страница 344: ...Figure 25 Typical Wet Bulb Type Vacuum Indicator ...
Страница 345: ...Figure 26 19XL Leak Test Procedures ...
Страница 346: ...Figure 27 Typical Optional Pumpout System Piping Schematic with Storage Tank ...
Страница 347: ...Figure 28 Typical Optional Pumpout System Piping Schematic without Storage Tank ...
Страница 348: ...Figure 29 Dehydration Cold Trap ...
Страница 349: ...Figure 30 Benshaw Inc Solid State Starter Power Stack ...
Страница 350: ...Figure 31 Ramp Up and Starting Torque Potentiometers ...
Страница 351: ...Figure 32 Typical Potentiometer Adjustment ...
Страница 352: ...Figure 33 Typical Cutler Hammer Solid State Starter ...
Страница 353: ...Figure 34 Correct Motor Rotation ...
Страница 356: ...Figure 37 Optional Pumpout System ...
Страница 357: ...Figure 38 Guide Vane Actuator Linkage ...
Страница 358: ...Figure 39 19XL Float Valve Designs ...
Страница 359: ...Figure 40 Optional Pumpout System Controls ...
Страница 360: ...Figure 41 PSIO Module Address Selector Switch Locations and LED Locations ...
Страница 361: ...Figure 42 LID Module Rear View and LED Locations ...
Страница 362: ...Figure 43 Processor PSIO Module ...
Страница 363: ...Figure 44 Starter Management Module SSM ...
Страница 364: ...Switch Setting Option Module 1 Option Module 2 S1 S2 6 4 7 2 Figure 45 Options Module ...
Страница 365: ...Figure 46 Typical Benshaw Inc Solid State Starter Internal View ...
Страница 366: ...Figure 47 Resistance Check ...
Страница 367: ...Figure 48 SCR and Power Poles ...
Страница 368: ...Figure 49 Typical Cutler Hammer Solid State Starter Internal View ...
Страница 369: ...Figure 50 Cutler Hammer Terminal Functions ...
Страница 370: ...Figure 51 Solid State Starter General Operation Troubleshooting Guide Typical ...
Страница 371: ...Figure 52 Solid State Starter Starter Fault Motor Will Not Start Troubleshooting Guide Typical ...
Страница 373: ...Figure 54 Compressor Fits and Clearances Continued ...
Страница 374: ...Figure 55 Compressor Fits and Clearances Continued ...