Mbsmpro.com, ECQ Vacuum Pump, VP115, 2 CFM, 1/4 hp, 50 L/min, 220V, Single Stage, 5 Pa, Ultimate Vacuum, 100% Copper Wire, R134a/R410a, HVAC/R Tool

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The Unsung Hero of Your Tool Bag: The ECQ VP115 Vacuum Pump

If you work in refrigeration or air conditioning—whether you are fixing a small fridge in a local shop or installing a split system in a new apartment—you know that moisture is the enemy. It is the silent killer of compressors. You can have the best welding skills in the world, but if you leave air inside the pipes, that unit will fail.

This is where the ECQ VP115 comes in. It is not the biggest pump on the market, but for an artisan bricoleur or a technician on the move, it is often exactly what you need. It is compact, it is reliable with its 100% copper winding, and it pulls a vacuum deep enough to degas a system properly before you recharge with R134a or R410a.

Why 2 CFM Matters for Small to Medium Jobs

Many technicians think “bigger is better,” but that isn’t always true. A huge 8 CFM pump is heavy and can actually pull a vacuum too fast on small capillary systems, causing moisture to freeze before it boils off. This 2 CFM (50 L/min) pump is the “Goldilocks” size—perfect for:

• Domestic Refrigerators (1/5 HP to 1/3 HP compressors).
• Split Air Conditioners (9000 to 18000 BTU).
• Car Air Conditioning systems.

It is light enough to carry up a ladder but strong enough to hit 5 Pa (approx 37 microns) of ultimate vacuum.

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Technical Specifications: The “Heart” of the Pump

Here is the detailed breakdown of what this machine offers.

Feature	Specification
Model	VP115
Voltage / Frequency	220V~50Hz / 60Hz
Free Air Displacement	2 CFM (approx. 50 L/min)
Ultimate Vacuum	5 Pa (0.05 mBar)
Motor Power	1/4 HP
Motor Type	100% Copper Winding (High durability)
Oil Capacity	320 ml
Intake Fitting	1/4″ Flare (Standard SAE)
Dimensions	275 x 122 x 220 mm
Net Weight	~5.3 kg
Application	R134a, R22, R410a, R407c

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Comparison: VP115 (Single Stage) vs. Dual Stage Pumps

When you are deciding between a single-stage pump like this and a more expensive dual-stage unit, it helps to see the difference clearly.

Characteristic	VP115 (Single Stage)	Typical Dual Stage (e.g., 2VP-2)	Verdict
Vacuum Depth	5 Pa (Good)	0.3 Pa (Excellent)	Single stage is fine for standard repairs; Dual is for deep-freeze/scientific work.
Weight	~5 kg (Light)	~10 kg (Heavy)	VP115 is much easier to carry to rooftops.
Price	Affordable	Expensive	VP115 offers better ROI for general repairs.
Maintenance	Simple Oil Change	Complex	Single stage is more forgiving with dirty oil.

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Performance Analysis: Speed vs. Quality

Let’s compare how this pump performs against other common sizes when evacuating a standard 12,000 BTU Split AC.

Pump Size	Time to 500 Microns	Risk of Freezing Moisture	Best Use Case
1 CFM (Small)	45+ Minutes	Low	Very small fridges only.
2 CFM (VP115)	20-25 Minutes	Balanced	Residential AC & Fridges.
6 CFM (Large)	5-8 Minutes	High (if not careful)	Commercial chillers / Large VRF.

Pro Tip: Always use a micron gauge. The sound of the pump changing pitch is a good sign, but it is not a measurement!

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Maintenance & Troubleshooting

To keep your VP115 running for years, follow this simple maintenance schedule.

Symptom	Probable Cause	Solution
Poor Vacuum	Dirty or low oil	Drain oil while warm and refill with fresh vacuum oil.
Oil Mist at Exhaust	Normal operation	This is normal when pumping large amounts of air at the start.
Pump Overheating	Low voltage or blocked fan	Check your extension cord gauge and clean the fan cover.
Hard Start	Cold weather	Warm up the oil or open the inlet port briefly to relieve pressure.

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Excerpt:

The ECQ Vacuum Pump VP115 is the ideal tool for the artisan bricoleur. With 2 CFM displacement and a durable 1/4 HP motor, it perfectly balances portability and power for residential AC and fridge repairs. This guide covers specifications, maintenance, and why 100% copper winding matters for your daily work.

Inside the SECOP SCE Hermetic Compressor: A Complete Exploded View and Parts Identification Guide

For technicians, engineers, and procurement specialists in the commercial refrigeration industry, understanding the internal anatomy of a compressor is not just academic—it’s essential for efficient maintenance, accurate troubleshooting, and reliable sourcing of spare parts. The SECOP SCE series hermetic compressor is a cornerstone in many refrigeration systems, known for its durability and performance. This article provides a comprehensive, journalistic breakdown of its internal components using a detailed exploded view, serving as your definitive visual and technical guide.

Decoding the Exploded View: A Systematic Walkthrough

An exploded view diagram is more than just a parts list; it’s a roadmap to the machine’s soul. It shows how individual components interact within the sealed “hermetic” shell, where the motor and compressor are welded shut to protect against refrigerant and moisture. Let’s navigate the key assemblies revealed in the SCE compressor diagram.

1. The Core Compression Assembly

This is the heart of the compressor, where mechanical motion translates into refrigerant compression.

• Piston (11) & Cylinder (Part of Crankcase 15): The piston moves within the cylinder bore, creating the vacuum and pressure cycles.
• Crankshaft (8): Driven by the motor, its rotational motion is converted into the piston’s reciprocating motion via the connecting rod (9) and wrist pin (10).
• Valve System: This critical assembly manages refrigerant flow. The suction valve (17) opens to draw in low-pressure gas. The discharge valve (18), held by its stopper (19), opens to release high-pressure gas into the discharge muffler.

2. The Electrical & Drive Assembly

Nestled beneath the compressor, this assembly powers the entire system.

• Stator (27): The stationary part of the electric motor, containing copper windings, housed inside the stator case (28).
• Rotor (25): Pressed onto the crankshaft (8), it rotates within the stator’s magnetic field.
• Hermetic Terminal (31): The vital electrical pass-through that allows power cables to enter the sealed compressor housing without leaking refrigerant.

3. Structural & Ancillary Components

These parts provide support, balance, and necessary functionalities.

• Compressor Housing (30): The iconic welded steel shell that contains all components.
• Suspension Springs (29): Isolate vibrations, preventing noise and wear from transmitting to the refrigeration cabinet.
• Oil Pump (26): Often a centrifugal type on the crankshaft, it ensures critical lubrication reaches the upper bearing (7) and other moving parts.
• Counterweight (6): Balances the rotating assembly to minimize vibration, secured by a screw (4) and sometimes accompanied by a slinger (5).

Complete SECOP SCE Compressor Parts Reference Table

For quick reference and cross-referencing with part numbers, here is a complete table of the components identified in the exploded view:

Item No.	Part Name	Primary Function
01	Compressor Cover	Protects internal parts, forms suction chamber
02	Suction Connector	Inlet for low-pressure refrigerant gas
03	Discharge Connector	Outlet for high-pressure refrigerant gas
04	Counterweight Screw	Secures the counterweight to the crankshaft
05	Slinger	Assists in oil distribution
06	Counterweight	Balances rotating assembly to reduce vibration
07	Upper Bearing	Supports the top of the rotating crankshaft
08	Crankshaft	Converts motor rotation into piston movement
09	Connecting Rod	Links the crankshaft to the piston
10	Wrist Pin	Pivot point connecting piston and connecting rod
11	Piston	Compresses refrigerant within the cylinder
12	Internal Discharge Tube	Channels compressed gas to the muffler
13	Screw	Fastens various components (e.g., muffler)
14	Discharge Muffler Gasket	Seals the discharge muffler connection
15	Crankcase	Main body housing cylinders and crankshaft
16	Valve Plate Gasket	Seals between crankcase and valve plate
17	Suction Valve	One-way valve for refrigerant intake
18	Discharge Valve	One-way valve for refrigerant outlet
19	Discharge Valve Stopper	Limits discharge valve movement
21	Cylinder Head Gasket	Seals the cylinder head
22	Suction Muffler	Reduces noise from suction gas pulsation
23	Cylinder Head	Covers the cylinder, part of compression chamber
24	Cylinder Head Screw	Secures the cylinder head
25	Rotor	Rotating part of the electric motor
26	Oil Pump	Circulates oil for lubrication
27	Stator	Stationary electromagnetic part of the motor
28	Stator Case	Holds and positions the stator
29	Suspension Spring	Vibration isolation mounting
30	Compressor Housing	Main hermetic (sealed) outer shell
31	Hermetic Terminal	Electrical connection into sealed housing
32	Base Plate	Foundation for internal assembly mounts

Why This Knowledge Matters for Your Business

Whether you’re a technician diagnosing a faulty discharge valve or a sourcing manager looking for a genuine SECOP crankshaft, this visual guide empowers you with precision. Correct part identification:

• Reduces Downtime: Enables faster, accurate diagnosis.
• Ensures Compatibility: Guarantees replacement parts match the exact SCE model specifications.
• Promotes Effective Communication: Allows clear reference between teams, suppliers, and clients.