Monthly Archives: January 2016

Getting to know a Hoist

A hoist is a device used to lift or lower the load attached to it by means of wheel lift or drum. Revocation of the load carried by the rope or wire that surrounds the wheel or drum. Wheels or drums can use electricity for operation or in some cases may also be operated manually. Along with the drum and the wire, which is another integral part of the hoist is lifting media used. The media used is different lifting chain, fiber or wire rope. Kail is also available in which the load is attached.

One of the most common type used worldwide is hoist Chain Hoist. The most common type used is electrically operated. In this type of hoist, which is used as a medium chain lift. Here there is a closed chain that form a loop that eventually lifting weights. Pulleys are also attached to the hoist for lifting loads. A number of small and large pulleys found in the chain lever hoist.

To increase the load, the chain should be withdrawn. When drawn, a large pulley chain attracted more than what is required by the smaller side to facilitate early lifting procedure. Various application fields chain hoist consists of a large industrial manufacturing and construction.
Work on the chain hoist can be understood from the following things:
• Using a gear to double the power.
• A chain hoist when operated by hand requires the operator to draw a circle of light in the side chain.
• This turns the gear mechanism for changing the chain pulley.
• When the pulley is changed, it poses a heavy chain that usually has a hook on the end.
• By pulling the chain halos, manual hoist actually able to increase the power that is being applied by heavy chains.
• This is caused by the gear ratio in manual chain hoist.
• mechanical work performed by the operator is equal to the work done by the heavy lift chains

Established procedure can also be automated using electrically operated chain hoist. So much work load lifting simplify and save time.

Deaerator recognize and benefits

Deaerator is a tool that works to get rid of the gases contained in the water boiler, after through a process of purification of water (water treatment). In addition deaerator also serves as a charging boiler water preheater before being inserted into the boiler. Deaerator works based on the nature of oxygen solubility in water decreases with an increase in temperature. The introduction deaerator can be seen in the following figure.

Deaerator tool consists of two drums where smaller drum is a preliminary heating and exhaust gases from the boiler water material, whereas the larger drum is a shelter material boiler water that falls from the smaller drum on it. On a smaller drum there is a spray nozzle that serves to spray water boiler material into fine water droplets so that the heating process and exhaust gases from the boiler water more perfect material. Also on smaller drums provided a vent line so that the gases can be wasted (together with steam) into the atmosphere.

The main element in determining the success of this process is the physical contact between the material water boiler with heat provided by the steam. Some things to note in the deaerator are:

• The amount of condensate water flow
• The amount of material flow water boiler
• The pressure in the deaerator
• The water level in the deaerator

If deaerator can not work properly, it can adversely affect the system of feed water, condensate system, and will also increase the use of chemicals. To achieve good efficiency deaerator there are several things to note are:

• Keep the temperature and pressure as high as possible in accordance with draft
• Make sure the steam / vapor exit / venting of the deaerator that oxygen and gases which are not condensed come out
• Inspect the inside of the deaerator to ensure all components are not damaged

Parts of Main Deaerator
To support the work deaerator, then in the deaerator need to be equipped with instruments taking the measurements, which is useful to monitoring the operation or the work of the deaerator itself. The images below show on the main parts of deaerator and some measurement instruments that equip.

– Spray-type Deaerator
It is used when the deaerator feed water needs to be heated prior to use steam as the heating

– Vacuum Deaerator type
Mechanism of action of vacuum deaerator is dissolved gases in the water was removed by using a steam ejector or or with a vacuum pump, to obtain the necessary vacuum, vacuum deaerator mechanism can be seen in the figure below II.4. The amount of vacuum depending on the water temperature, but usually 730 mmHg.

– Deaerator type Tray
as a medium to enlarge the fall of the water so that the water molecules would be mutually exclusive to one another, so the tray in this type deaerator is to force water molecules to spread making it easier for air release.

Tips on choosing the house there are stairs

Stairs are actual household appliances must-have. Compared stairs made of bamboo or wood, a portable ladder is more practical. In addition to functioning as a liaison between the floors, stairs house also serves as take into gorgeous interior of the house. Development of the property at this time, creating many variations of the model ladder minimalist house designed unique and beautiful. Besides lightly moved anywhere, using any easier. You simply spread her legs and rungs was more comfortable used, there are many types and models as exemplified Cotterman ladders. But before you buy, know tips on choosing a secure portable ladders.

Thorough When Buying

There are several things you should consider before buying a portable ladder. Among others are:

  1. Choose a ladder made of aluminum. In addition to the strong, aluminum is lighter and not easily rust (iron compared).
  2. Note the description of the size and weight of the load that can be borne by the stairs. Usually portable ladders are sold in a variety of sizes. Choose one that suits your needs.
  3. Both legs should be parallel when stretched staircase, also sturdy and stable, so safe when used.

Thorough When to Use

The form is portable does not mean you can carelessly while using it. Note how the use of portable ladders as follows:

  1. Only one person may ride alone (although both sides have rung).
  2. Make sure the surface of the floor / ground is flat and hard as you set up the ladder.
  3. Note the stair materials. If made of a material that is easy to deliver electricity, keep the ladder from electric lines.
  4. Store the ladder in a dry and clean so as not to rust.
  5. Make sure the top of the stairs was locked both when the ladder stretched so that he does not shut down unexpectedly.

As for the permanent stairs a few things to note

  1. Select Model and design Appliances

Model and design of the ladder should be matched with the state of the interior of the house. If you choose a home interior ladder modern nuances with modern design and the latest date. if the design or model of the same household with the interior of the house, the house will be more comfortable.

  1. Location of Stairs

Placement staircase proper flow and can be reached easily. Mobility will be better and maintained if proper ladder placement and fitting.

  1. Quality Stairs Yang in Choose

Selection of the ladder with good material quality would make the stairs safer to use and can last longer. Stairs will not be damaged and not easily fragile if the ladder in the select quality materials and has been tested.

  1. Security Appliances

So that the ladder is in use more secure, give staircase with a barrier or fence for the stairs so that security can be maintained stairs. can also use relling or railing made of iron, aluminum or wood, which surely must be strong and able to avoid the accident.

The importance of building elevator maintenance

Building Elevator care is very important for the sake of convenience and the main thing is the safety of elevator users in the building with high activity. Below will explain the building elevator maintenance performed by an elevator mechanic.

  1. Care Equipment Controller in the engine room

– Inverter and Main Board

– Check the display on the inverter and the main board panel mounted on the controller cabinet, see if all is normal or shows display err code. If found the err code, check user’s manual and set in accordance with the instructions. Do occasionally change or add codes on the main board and the inverter software.

– Check Among other cables, terminals, relays, contactor AVR, and all components in the controller cabinet and tighten the bolts visible sagging.


  1. Treatment drive motor

– Check the terminals connection cables to the motor.

– Check and observe the motor when the rude noises (loud)


  1. Treatment brake motors

– Check out how it works, good adjustment would give the maximum age of the brake equipment.

– Brake Shoes

– Check and replace if worn and thin, also consider whether there is oil that is attached to the brake as this can affect the workings of the brake. Brake shoes should not be in contact with the oil.

– Check all moving parts, especially the pins and screws, tighten if loose, and provide lubrication if necessary.


  1. Maintenance Sheave (wheel drive)

– Check the play sheave (cog), especially the plot if the plot was still in accordance with the requisite standard, also check the fastening bolts


  1. Governor

– Check the bolts and tighten if loose, lubricate the parts that need to be in accordance with the needs and schedule. Immediately replace if there is equipment that is worn out and also the time to be replaced. Also check the steel cable must be in good condition.

The entire maintenance work, replacement of spare parts, and overhauls must be carried out by trained and experienced expert in the field of elevator-escalator and must have training (training) basics operator of elevator-escalator safety and have certified competence in the field of maintenance of elevators