Alkin W3 Series Instruction Manual & Parts List Download

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W 3 S E R I E S
H I G H P R E S S U R E A I R C O M P R E S S O R

©ALKIN COMPRESSORS

be opened and cleaned; if valve disks or springs are worn, they need to be replaced. See valve maintenance

section of this manual for futher details.

Beather:

All piston type machines have some compression leak through the rings into the crankcase; to prevent pressure
build up in the crankcase, a breather system is provided to allow the crankcase to “breath”. In the air compressor

the crankcase is connected via a copper tube to the inlet from where the breathing is made possible, or a
breather device is installed on the crankcase to vent the pressure from within the crankcase. In the gas

compressors the crankcase is piped to the inlet

Pistons:

1st , 2nd and 3rd stage pistons are connected to the crankshaft via connecting rods. Pistons move up & down and
compress the air inside the cylinders with the motion supplied by crankshaft . Have the pistons tested with proper

testing equipment in general overhaul periods and replace it if exceeding the tolerance limits mentioned in the parts
book.

Safety Valves:

Safety valves are installed onto the discharge line of each stage. All the safety valves are pressure tested and set
accordingly. If there is any unestimated pressure increase in the system safety valves open to vent the over pressure

and eliminate any possible damage may arise from the unestimated pressure increase. Safety Valves are set and sealed
by the manufacturer. Do not attempt to break the seal and change the settings of the safety valves. Otherwise you

may cause serious injuries or accidents may result in death.

Intake Filter:
Intake Filter is used to filter the particles in the air going into the compressor’ s first stage. Inner element of the

intake filter should be replaced periodically according to the MAINTENANCE TABLE.

2.4.2 Major Components – System

The Canopy:

The semi open canopy is designed to carry the various components, the electrical panel, and permits lifting the system
through the pallet jack slots. It is painted electrostatically for extended life. It has four easily removable door panels

to easily and quickly access all parts of the package.

The Sub Base:

This is the base carrying the motor & compressor units; it is supported on four vibration mounts; this base plate is
separate from the canopy and with this unique design no vibration is transmitted to the canopy. The horizontally

mounted compressor / motor assembly is a belt driven system.The Electrical Panel:

It is mounted inside the fan duct on the top section and can be accessed by removing the top door. It accommodates

all the electrical gear to start the motors and control the system.

Pressure Switch:
This unique device, which is installed on the right door, both indicates the purifier pressure, and the set pressures on

its dial, while serving as a double circuit pressure switch. It controls the start-stop operation of the compressor. The
pressure-sensing end of the pressure switch is connected to a port on the purifier; when the pressure inside the purifier

reaches the set pressure, it cuts off the contnrol circuit, and stops the electric motor.

Automatic Drain Valves:

The automatic drain incorporates a small piston with high pressure in the bottom, and low pressure on top; the
surface where low pressure acts on is larger than the surface where the high pressure effectively acts on the piston.

Therefore the force on the top is larger and causes the piston to sit and seal the high-pressure vent port. The drain
valves are controlled by a solenoid mounted on the pilot valve fitting. It receives compressed air from the 2

stage