ULVAC DAT-50DEP (01) PDF Document

Only persons who have read the instruction manual thoroughly and have a sufficient understanding of safety, pump specifications, and method of operation may operate the ULVAC DAT-50DEP.

After reading the manual for the ULVAC DAT-50DEP, be sure to keep it in a safe place, which is readily accessible to others needing to use it for future reference.

Yes, you must follow all statutory and local authority regulations when disposing of this pump. It should be handled as industrial waste and not incinerated.

For the safety of repair personnel, please provide a full description of the circumstances of use, particularly the use of any dangerous materials. Your request for repair may be refused if these circumstances are unclear.

When requesting the manufacturer’s service division to dismantle and repair the pump, always note the gas which the pump has been used with on the Usage Check Sheet. Note that if it has been used to discharge toxic gas for any reason it will be contaminated. Please be aware that use with some gases will preclude dismantling and repair.

After opening the packaging, check the following:

1. Is the product as you requested?

2. Are the accessories and necessary parts included? Standard accessories include:

• User’s manual: x1

• Inlet and outlet caps (fitted to inlet and outlet): x2 (DAT-50DEP) or x3 (DAT-100SEP)

3. Is the pump damaged in any way?

4. Are any external screws or inlet and outlet pipes loose? Are any components missing?

If there are any problems with the pump, contact your agent or the sales division of the manufacturer.

The meanings of the safety icons are as follows:

• Danger: Incorrect handling of the equipment is very likely to result in death or serious injury to the operator.

• Warning: Incorrect handling of the equipment may result in death or serious injury to the operator.

• Caution: Incorrect handling of the equipment may result in light or medium injuries to the operator or damage to the equipment.

• Note: Incorrect handling of the equipment may result in damage to the equipment and hinder its correct operation.

• High Temperatures: Some components reach surface temperatures in excess of 60°C during pump operation. Burns may result if these components are touched during operation.

• Electric Shock: To prevent electric shock, always shut-off the primary power supply before working on electrical wiring, or engaging in any electrical work.

Observe the following prohibitions to ensure normal operation of the pump:

1. This pump employs only vacuum operation, and must not be pressurized.

2. Do not re-sell, repair, or modify this pump without the approval of the manufacturer.

3. Ensure that the gas entering the pump does not contain rubbish, dust, or water (except steam).

4. Do not operate the pump for long periods at near-atmospheric pressure.

The ULVAC DAT-50DEP is fitted with an automatic reset thermal protection relay for overload protection. This device shuts off the motor power supply circuit automatically to prevent burn-out if the motor temperature rises due to a pump fault which prevents rotation, or if the load becomes excessive. It is recommended that additional protective devices (e.g., earth leakage breaker, motor breaker) be fitted.

The following conditions must be satisfied during storage, installation, and operation:

1. Ambient temperature of 7~40°C and maximum relative humidity of 85% during operation.

2. Equal to or less than 1000m above sea level for storage and operation.

3. Other conditions:

a) Level floor of sufficient strength.

b) No condensation.

c) Dust-free environment.

d) Well ventilated.

e) Environment free of corrosive or explosive gas.

f) Not subject to direct sunlight.

g) No danger of fire.

h) Maximum ambient temperature of 40°C during assembly of pump.

i) Free of soot and oil.

j) Free of splashing or flooding.

k) Keep it indoor ventilated.

l) When installing the pump, avoid mounting it directly on the base. Employ anti-vibration rubber between the base and the vacuum pump.

1. The wire diameter of the power cord must be φ1.0mm or more.

2. It is recommended that the end-user equip a protection device such as an earth leakage breaker or motor breaker on the electric wiring to prevent motor burnout from overcurrent.

3. The attaching screw for the earth terminal must have an earth mark indicated.

4. The electric wire connected to the earth must be a green colored insulating coating wire, with or without yellow stripes. Its wire diameter must be φ1.0mm or more.

Notice: Before operating wire connection, be sure to unplug the power plug.

1. Remove the rubber caps from the inlet and outlet.

2. Switch off the main power supply before connecting the power cord from the pump. Ensure the power plug is sufficient for the rated voltage and current.

3. Turn the switch ON and check that gas is being drawn into the inlet.

4. When this check is complete, turn the power switch OFF to stop the pump.

1. Install piping carefully to prevent leaks.

2. Piping connected to the inlet should be at least 10 mm inside diameter.

3. Maximum back pressure is 0.03 MPa (gauge pressure).

4. If selecting an inlet and exhaust pipe not from our products, select an exhaust pipe that has the same or larger inner diameter length as the inlet pipe.

5. When evacuating a vessel, ensure that a shut-off valve is placed between the pump inlet pipe and the vessel.

To store the pump, turn the power off, remove the terminal from the outlet, place the rubber caps over the inlet and outlet, and store the pump in an area of low humidity.

1. When the thermal protection relay operates, switch the power OFF, remove the power cord from the outlet, and contact the manufacturer. Note that the pump will be very hot and should not be touched.

2. The pump operates automatically when the temperature drops. Shut-off the power supply, and determine the cause of the operation of the thermal protection relay.

3. Once the cause of the fault has been removed, wait until the motor cools and restart operation.

Cold weather can increase the viscosity of bearing grease and harden diaphragms, making the pump difficult to start. Follow this procedure:

1. If the pump does not restart, try to keep the pump within the operating temperature for a little while and then turn on the power again.

2. With the inlet open to the atmosphere, run the pump for a few minutes to warm it up.

3. Commence normal operation once the pump has warmed.

The following checks are required at least once every three days during operation:

1. Check for abnormal noises.

2. Check for abnormal heating of the pump.

3. Check that gas is discharged normally.

If a problem is found, take the measures described in the Troubleshooting List.

[ ]: For DAT-100SEP

Note: The average life for a component varies with the conditions of use. Life is extended by running the pump at minimal load (operation at the achieved pressure with inlet closed). Bearings are replaced by the manufacturer’s service division.

※ The pump becomes very hot after operation. After stopping the pump, leave it for 30 minutes to cool, and replace and clean components only after it has cooled to a safe temperature.

※ Always put on a dust mask and gloves before replacing diaphragms and valves. Any fine particles produced by mechanical wearing may become airborne, causing a health risk if inhaled.

※ Always use gloves to prevent injury when replacing diaphragms.

Have the following tools on hand to perform the replacement:

1. Torque wrench – bit size 5 mm (13.0 Nm), bit size 4 mm (5.0 Nm)

2. Phillips head (+) screwdriver – No.2

3. Torque screwdriver – No.2 (0.8 Nm, 2.0 Nm, 5.0 Nm)

4. Wrench – width across flat 19 mm

5. Rag

6. Solvent for wiping (such as ethanol, that has no effect on rubber)

7. Dust mask (for nose and mouth), gloves, protective eyewear

8. Loctite 242

*Use items No.5 and 6 to wipe down any dirty area when replacing the part.

Parts Removal

*First unplug the pump’s power cable from the main power supply.

Step 1: Remove the connecting tube. First, remove the connecting tube that joins the primary side and the secondary side. Use the wrench to remove the joint end.

Step 2: Remove the diaphragm. Remove the four hex socket bolts (M6x22), then remove the pump head. Next, remove the four small flat head screws with cross holes (M5x12) and the push plate for the diaphragm. You can now remove the diaphragm.

Step 3: Remove the air release valve, filter, and pump head gasket. After removing the pump head, remove the five small pan head screws (w/M4x12 SW) to take off the pump head cover, pump head gasket, and filter. Next, remove the small pan head screws (M3x5) to take off the air release valve holder and air release valve.

Step 4: Remove the base. Remove the four hex socket bolts (M5x30) and then remove the base. This completes the parts removal procedure.

Attaching Parts & Assembly

Step 5: Attach the diaphragm. Place the new diaphragm onto the connecting rod. With the motor positioned above, adjust the diaphragm so there is an even space on the left and right sides.

Step 6: Attach the push plate. Place the push plate on top of the diaphragm. Apply Loctite 242 to 3-4 threads of the small flat head screws (M5x12). Tighten the screws in order (1 through 4) over 3 passes, partially tightening each time. Finally, use the torque screwdriver (5.0 Nm) to tighten each screw twice. After attaching, check the diaphragm alignment.

Step 7: Attach the air release valve and holder. The attachment direction varies by model and side; check the diagrams in the manual. Apply Loctite 242 to 2-3 threads of the attaching pan head screws (M3x4). Tighten them using the torque screwdriver No. 2 (0.8 Nm). After attaching, check the alignment of the valve and holder.

Step 8: Attach the filter. The attachment direction varies. Follow the diagram in the manual to ensure correct placement. Insert the filter all the way so it does not come out or get stuck.

Step 9: Attach the pump head gasket. Ensure the attachment direction is correct by following the manual’s picture. The direction is the same for primary and secondary sides on both models.

Step 10: Attach the pump head cover. The thick part of the center fin should be on the bottom. Use the torque screwdriver No. 2 (2.0 Nm) to tighten the five small pan head screws (w/M4x12S) in order from (1) to (5). Make two passes to ensure proper tightening.

Step 11: Prepare to attach the pump head. Before attaching, rotate the eccentric shaft to the top position as shown in the manual’s picture.

Step 12: Attach the pump head. Adjust the pump head so there is even space on the left and right side of the diaphragm, as in Step 5. Tighten the four hex socket bolts (M6x22) using a torque wrench with a 5 mm bit (13.0 Nm), following the order in the picture. Make two passes to ensure proper tightening. Do the same for the opposing pump head.

Step 13: Attach the base. After attaching both pump heads, tighten the base using a torque wrench with a 4 mm bit (5.0 Nm) and the four hex socket bolts (M5x30), following the order in the picture.

Step 14: Attach the connecting tube. The parts replacement procedure is now complete.

If the pump surfaces are abnormally hot (more than room temperature + 30°C), check the following causes and solutions: