Operation; Maintenance - HOGERT HT4R651 User Manual

Orbit Size:
Air consumption:
Operating Pressure:
Air Inlet Size:
Weight:
Noise Power:
Noise Pressure:
Vibration:
Uncertainty Value (k):
4. PREPARATION
4.1. Air Supply
4.1.1. Ensure the sander air valve (or throttle) is in the "off" position before connecting to the air supply.
4.1.2. You will require an air pressure between 70-90PSI, and an air flow according to the specification above.
4.1.3. WARNING! Ensure the air supply is clean and does not exceed 90PSI while operating the sander.
Too high an air pressure and unclean air will shorten the product life due to excessive wear, and may be
dangerous causing damage and/or personal injury.
4.1.4. Drain the air tank daily. Water in the air line will damage the sander and will invalidate your warranty.
4.1.5. Clean air inlet filter weekly. Recommended hook-up procedure is shown in fig 1.
4.1.6. Line pressure should be increased to compensate for unusually long air hoses (over 8 metres).
The minimum hose diameter should be 1/4" I.D. and fittings must have the same inside dimensions.
4.1.7. Keep hose away from heat, oil and sharp edges. Check hoses for wear, and make certain that all
connections are secure.
4.2. Couplings.
Vibration may cause failure if a quick change coupling is connected directly to the air sander. To overcome this,
connect a leader hose to the sander. A quick change coupling may then be used to connect the leader hose to
the air line recoil hose. See figs 1 & 2.

5. OPERATION

WARNING! Ensure you read, understand and apply safety instructions before use.
5.1. Assembly.
5.1.1. Apply appropriate sanding disc to the backing pad. Use only pads with speed ratings equal to or higher than the speed rating of the
sander. DO NOT use cloth backed sanding pads.
5.1.2. Connect air supply to sander and press the control valve lever and check that the sander is working correctly.
5.1.3. T he air flow may be regulated by turning the throttle valve on the side of the handle.
5.2. Operation.
The sander is designed to provide a combined rotary and random orbit action.
Always use sanding disc with grit appropriate for the job. Work progressively from coarse grades to finer
grades. DO NOT go from coarse to fine in one step as it may be difficult to remove swirl marks left by the
coarser grit. DO NOT apply excessive pressure, let the sander do the work for you. Start the sander and
bring the sanding disc to the work surface evenly and slowly. Move the sander back and forth in
overlapping areas. Remove the sanding disc from the work surface before stopping the sander. Regularly
check the sanding pad for wear, always changed a cracked or damaged pad.
DO NOT allow sander to run in "idle rotation" for an extended period of time as this will shorten life of the
bearings.

6. MAINTENANCE

WARNING! Disconnect sander from air supply before changing accessories, servicing or performing
maintenance. Replace or repair damaged parts.
Use genuine parts only. Non-authorised parts may be dangerous and will invalidate the warranty.
5.1. Lubricate the air sander daily with a few drops of good grade air sander oil
a) Excessive drain on the air line. Moisture or restriction in the air pipe. Incorrect size or type of hose connectors.
To remedy check the air supply and follow instructions in chapter 3.
b) Grit or gum deposits in the sander may also reduce performance. If your model has an air strainer (located in the area of the air inlet),
remove the strainer and clean it. Flush the sander out with gum solvent oil or an equal mixture of oil and kerosene.
Allow to dry before use. If you continue to experience problems, contact your local service agent.
5.4. For a full service contact your local service agent.
5.5. When not in use, disconnect from air supply, clean sander and store in a safe, dry, childproof location.
10
5 mm
113 l/min
90 PSI
1/4" BSP
1.73 kg
94 dBA
83 dBA
4.6 m/s²
1.84 m/s²
Adres producenta/ Adresse des Herstellers/ Manufacturer's Address/ Адрес производителя
Fig. 1 Fig. 2
GTV Poland Sp. z o.o. Sp. k., ul. Przejazdowa 21, 05-800 Pruszków