Mitsubishi Self Ejector Genius-Series (Instruction/Maintenance Manual) - Mitsubishi [PDF]

Contents

CONTENTS
1 PRECAUTIONS IN SAFETY .................... 1-1
1.1 SYMBOLS RELATED TO SAFETY ............. 1-1
1.2 LABELS FOR SAFETY ............................ 1-2
1.3 SAFETY PRECAUTIONS ......................... 1-3
1.4 DEFINITION OF TERMS .......................... 1-6
2 DISASSEMBLY AND REASSEMBLY ..... 2-1
2.1 DISASSEMBLY ...................................... 2-1
2.1.1 Cover ......................................... 2-3
2.1.2 Bowl ........................................... 2-5
2.1.3 Horizontal shaft .......................... 2-16
2.1.4 Water supplying device .............. 2-22
2.1.5 Vertical shaft .............................. 2-25
2.1.6 Gear pump ................................. 2-29
2.2 REASSEMBLY....................................... 2-32
2.2.1 Bowl ........................................... 2-34
2.2.2 Vertical shaft .............................. 2-37
2.2.3 Water supplying device .............. 2-38
2.2.4 Horizontal shaft .......................... 2-38
2.2.5 Reassembly of trap .................... 2-40
2.2.6 Gear pump ................................. 2-41
3 MAINTENANCE INSPECTION
PROCEDURES ......................................... 3-1
3.1 ROUTINE CHECKS ................................ 3-1
3.2 LUBRICANT REPLACEMENT INTERVALS .. 3-2
3.3 INSTRUCTIONS FOR USE
OF SYNTHESIZED LUBRICANT ............... 3-3
3.4 EXPENDABLE PARTS
REPLACEMENT INTERVALS ..................... 3-5
3.5 BOWL OPENING INTERVALS (GUIDELINES)
........................................................ 3-7
3.6 OVERHAUL (GUIDELINES) ..................... 3-7
4 MAINTENANCE INSPECTION
PROCEDURES FOR MAJOR PARTS ..... 4-1
4.1 BEARING REPLACEMENT INTERVALS ..... 4-1
4.2 BOWL ................................................. 4-1
4.2.1 Corrosion of bowl ....................... 4-1
4.2.2 Corrective steps for corrosion ... 4-2
4.2.3 Disc .......................................... 4-3
4.2.4 Bowl body .................................. 4-4
4.2.5 Bowl hood .................................. 4-5
4.2.6 Main seal ring ............................ 4-5
4.2.7 Distributor .................................. 4-6
4.2.8 Various types of O rings of bowl
................................................ 4-6
4.2.9 Main cylinder ............................. 4-7
4.2.10 Pilot valve assembly .................. 4-7
4.3 VERTICAL SHAFT SYSTEM ..................... 4-8
4.3.1 Vertical shaft .............................. 4-8
4.3.2 Upper springs ............................ 4-8
4.3.3 Lower bearing block .................. 4-9
4.3.4 Flat spring .................................. 4-9
4.3.5 Steel ball .................................... 4-9
4.3.6 Lower spring .............................. 4-9
4.3.7 Height of vertical shaft ............... 4-10
4.3.8 Installed height of flat spring
(adjustment of spacer) ............... 4-10
4.4 HORIZONTAL SHAFT SYSTEM ................ 4-11
4.4.1 Spiral gear ................................. 4-11
4.4.2 Horizontal shaft .......................... 4-11
4.4.3 Collar ......................................... 4-11
4.4.4 Friction block ............................. 4-12
4.4.5 Friction pulley ............................ 4-12
4.5 GEAR PUMP ........................................ 4-12
SELFJECTOR Instruction Manual Maintenance Manual
4.5.1 Safety joint ................................. 4-12
4.5.2 Drive gear, driven gear
and bush ................................... 4-12
4.5.3 Valve stem ................................. 4-12
4.6 LUBRICANT .......................................... 4-13
4.7 BRAKE EQUIPMENT .............................. 4-13
4.8 WATER SUPPLYING DEVICE ................... 4-13
4.9 INSPECTION OF MULTI-MONITOR
FOR FUNCTION.................................... 4-14
4.9.1 Leakage Monitor (LM) ................ 4-14
4.9.2 Discharge Detector (DD) ........... 4-14
4.9.3 Water Detector (WD) ................. 4-14
5 PERIODIC INSPECTION CHART ............ 5-1
6 CAUSES OF TROUBLES
AND CORRECTIVE STEPS .................. 6-1
6.1 ALARMS .............................................. 6-1
6.1.1 Types of alarms ......................... 6-1
6.1.2 Alarm indications ........................ 6-2
6.1.3 Processing sequence
after occurrence of alarm ............ 6-4
6.1.4 Self-diagnostic fnction
of detectors ............................... 6-5
6.2 OCCURRENCE OF OIL LEAKAGE ............. 6-6
6.2.1 Check the flow rates of valve
closing operating water and sealing
water. .......................................... 6-6
6.2.2 Checks to perform
by disassembling bowl ................ 6-7
6.2.3 Checks to perform
by disassembling water supplying
device ......................................... 6-7
6.2.4 Other .......................................... 6-7
6.3 OCCURRENCE
OF ABNORMAL VIBRATION ...................... 6-9
6.3.1 Check for unbalance
in the bowl. ............................... 6-9
6.3.2 Checking for defects
in vertical shaft system ............. 6-9
6.3.3 Checking for defects
in horizontal shaft system ......... 6-9
6.4 DOES NOT DISCHARGE SLUDGE
EVEN IF DISCHARGE PROCEDURES ARE
PERFORMED. ....................................... 6-11
6.5 MIXED FLOW OF WATER
TOWARD LIGHT LIQUID OUTLET .............. 6-11
6.6 LOW FEEDING RATE OR NOT FED AT ALL
....................................................... 6-11
6.7 GEAR OIL MIXED WITH WATER ............... 6-12
6.8 POOR SEPARATION .............................. 6-12
6.9 LOW SPEED ......................................... 6-12
6.10 SLUDGE UNEVENLY ACCUMULATED
IN BOWL ............................................... 6-12
6.11 MIXED FLOW OF OIL
TOWARD HEAVY LIQUID OUTLET ......... 6-13
6.12 ACCESSORIES ..................................... 6-13
6.12.1 Solenoid valve unit
for the operating water ............ 6-13
6.12.2 Solenoid valve for water ............ 6-13
6.12.3 Three-way raw liquid valve ........ 6-13
6.12.4 Leakage Monitor (LM) function
of Multi-Monitor ....................... 6-14
6.12.5 Discharge Detector (DD) function
of Multi-Monitor ....................... 6-16
6.12.6 Water Detector (WD) function
of Multi-Monitor ....................... 6-17

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