Podcast
Questions and Answers
What is the primary function of the 3-way temperature control valve in the gear lube oil system?
What is the primary function of the 3-way temperature control valve in the gear lube oil system?
The 3-way temperature control valve regulates the flow of gear lube oil, directing it either through the E-502A/B (Gear Lube Oil Coolers) for cooling or bypassing them, based on temperature requirements.
Describe the difference in function between the P-502A and P-502B pumps within the C-500 gear lube oil system.
Describe the difference in function between the P-502A and P-502B pumps within the C-500 gear lube oil system.
P-502A (Main Gear Lube Oil Pump) is the primary pump, driven by the compressor shaft, responsible for the normal operation of the gear lube oil system. P-502B (Auxiliary Gear Lube Oil Pump) is a backup pump used for start-up or in case of P-502A failure.
Explain how the E-502A/B (Gear Lube Oil Coolers) function to cool the gear lube oil, and what type of heat exchangers are they?
Explain how the E-502A/B (Gear Lube Oil Coolers) function to cool the gear lube oil, and what type of heat exchangers are they?
E-502A/B are shell and tube, U-tube type heat exchangers. They cool the gear lube oil on the shell side by using cooling water on the tube side.
What is the purpose of the F-502A/B (C-500 Lube Oil Filters), and what type of filters are they?
What is the purpose of the F-502A/B (C-500 Lube Oil Filters), and what type of filters are they?
In the event of a failure of P-502A when would P-502B be utilized, and what type of motor drives P-502B?
In the event of a failure of P-502A when would P-502B be utilized, and what type of motor drives P-502B?
Flashcards
P-502A (Main Gear Lube Oil Pump) Function
P-502A (Main Gear Lube Oil Pump) Function
Routes gear lube oil from the gearbox through the gear oil system during normal operation.
P-502B (Auxiliary Gear Lube Oil Pump) Function
P-502B (Auxiliary Gear Lube Oil Pump) Function
Provides gear lube oil to the system during start-up and in case the main pump (P-502A) fails.
3-Way Temperature Control Valve Function
3-Way Temperature Control Valve Function
Regulates the temperature of the gear lube oil by routing it through or bypassing the E-502 A/B coolers.
E-502A/B (Gear Lube Oil Coolers) Function
E-502A/B (Gear Lube Oil Coolers) Function
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F-502A/B (Lube Oil Filters) Function
F-502A/B (Lube Oil Filters) Function
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Study Notes
- P-502A (C-500 Main Gear Lube Oil Pump) moves gear lube oil from the gear box through the gear oil system.
- P-502B (C-500 Auxiliary Gear Lube Oil Pump) provides start-up and stand-by service.
- The gear lube oil flows via a 3-way temperature control valve into E-502A/B (Gear Lube Oil Coolers).
- The 3-way valve ensures gear oil goes through the coolers or bypasses them.
- The oil flows through F-502A/B (C-500 Lube Oil Filters) to bearings in the gear box and pump coupling, before going back to the gear box.
P-502A (C-500 Main Gear Lube Oil Pump)
- It is a single-stage centrifugal pump.
- It is driven by the compressor shaft.
- It routes gear lube oil to C-500 gear oil system.
P-502B (C-500 Auxiliary Gear Lube Oil Pump)
- It is a single-stage centrifugal pump.
- It is driven by 3 HP 3520 RPM horizontally-mounted, induction electric motors.
- It routes gear lube oil to C-500 gear oil system for startup/standby.
- It is used if P-502A fails.
E-502A/B (C-500 Gear Lube Oil Coolers)
- They are shell and tube, U-tube type heat exchangers.
- They cool gear lube oil on the shell side using cooling water on the tube side.
- They cool the gear oil before it is routed to C-500.
F-502A/B (C-500 Lube Oil Filters)
- They are cartridge type filters.
- They remove contaminants from the gear lube oil before it goes to C-500.
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