Donaldson Donaldson Cartridge Dust Collector DWS 4-4 DWS 4-4

Warning: Electrical work must be performed by a qualified electrician and comply with all applicable national and local codes.

Turn power off and lock out electrical power sources before performing service or maintenance work.

Do not install in classified hazardous atmospheres without an enclosure rated for the application.

Control panel mounted in a convenient, accessible location

Tubing connected to the low-pressure barbed fitting on the control panel and to the barb fittings on the rear of the power module marked Low

Upload a photo of the control panel wired to the motor and solenoid valves

Blower motor turned on and off for rotation check

To reverse rotation with a three-phase power supply: Turn electrical power off at the source and switch any two leads on the output side of the blower-motor starter.

Compressed-air supply connected following the instructions in Compressed Air Installation

Sprinkler systems place a large quantity of water in the dust collector when activated. Provide adequate drainage to remove water. Excess water weight can cause the leg structure to collapse.

Optional fire control sprinklers are available for all models operating under negative pressure. Donaldson Torit supplied sprinklers require a minimum of 15 psig water pressure to each module. The volume of water discharged per sprinkler head is 20 gallons per minute.

Consult with local authorities when installing fire control systems on dust collection equipment.

1. Open the front access doors to access the sprinkler tap located in the dirty-air plenum.

2. Apply pipe sealant to the threads of the pipe reducer located on the sprinkler assembly.

3. Thread the sprinkler assembly onto the 1-inch diameter sprinkler tap.

Instruct all personnel on safe use and maintenance procedures.

Use proper equipment and adopt all safety precautions needed for servicing equipment. Electrical service or maintenance work must be performed by a qualified electrician and comply with all applicable national and local codes.

Turn power off and lock out electrical power sources before performing service or maintenance work.

Do not install in classified hazardous atmospheres without an enclosure rated for the application.

Turn compressed air supply off and bleed lines before performing service or maintenance work.

Do not set compressed-air pressure above 50 psig. Component damage can occur.

All compressed air components must be sized to meet the maximum system requirements of 60 psig supply pressure.

The compressed-air supply must be oil and moisture free. Contamination in the compressed air used to clean filters will result in poor cleaning, cleaning valve failure, or poor collector performance.

Purge compressed air lines to remove debris before connecting to the unit’s compressed air manifold.

IEC Control Panel with Programmable Logic Control

This control panel contains a safety disconnect switch, blower motor control, pulse control functions, and a Magnehelic gauge. The Programmable Logic Control, PLC, provides features such as sequential start-up, staggered aftershift cleaning, and troubleshooting capabilities.

1. This control panel includes magnetic starters with a low-voltage control circuit.

2. The blower motor ON/OFF buttons are located on the control panel cover. A red blower motor RUNNING light is also provided.

3. Sequential start-up is provided for all DWS 4- and DWS 6-2, 3, and 4 modules. This allows a delay between starting each blower motor and reduces undesirable overload current at start-up.

4. The control panel has troubleshooting capabilities. If a blower motor shuts down due to a failure, such as an overload, the panel will flash the red RUNNING light quickly. The two amber lights, CLEANING and AFTERSHIFT CLEANING, will also flash indicating which circuit tripped the alarm.

For example: The overload on motor protector #3 is tripped. The red RUNNING light will flash quickly and the two amber lights, CLEANING and AFTERSHIFT CLEANING, will flash three times, then pause and repeat. This indicates that motor protector #3 has been tripped. The lights will continue to flash until the alarm is serviced.

5. Thermal overload relays and circuit breakers are provided for the motor circuit and fuses for the low voltage circuit. Standard voltages available are 208/230/460/575/60 Hz/3 phase.

Warning: This procedure requires trained personnel with PPE!

Pressure ports on the back of the gauge plugged

1/8-inch NPT male adapter installed into the low-pressure port on the side of the gauge

Mounting bracket attached using three #6-32 x 1/4-inch screws

Gauge and bracket assembly mounted to the supporting structure using three self-drilling screws

Gauge zeroed and maintained as directed in the manufacturer’s operating and maintenance instructions

Sign off on the Magnehelic Gauge Replacement