A9
Donaldson Company, Inc.
Compressed Air Installation
Turn compressed air supply OFF, bleed and lock out lines before performing service or maintenance work.
A safety exhaust valve should be used to isolate the compressed air supply. The safety exhaust valve should
completely exhaust pressure in the collector manifolds when closed, should be capable of being interlocked with fire
or explosion mitigation equipment and should include provisions to allow closed-position locking.
Do not set compressed-air pressure above 70-psig as component damage can occur.
All compressed air components must be sized to meet the system requirements of 50-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 collector’s compressed-air manifold.
1. Connect the compressed-air supply line to the 1-in NPT connection located at the rear of each power module. Use thread-
sealing tape or pipe sealant on all compressed-air connections.
2.
Install a customer-supplied shut-off valve, bleed-type regulator with gauge, filter, and automatic condensate valve in the
compressed-air supply line.
3.
With power supply ON, check the operation of the solenoid valves. The valves should open and close sequentially at factory
set 10-second intervals.
4.
If a Photohelic® gauge, Torit Delta P, Torit Delta P Plus, or similar device is used to control the solid-state timer, the solenoid
valves pulse only when the differential pressure reaches the high-pressure setpoint. The valves continue to pulse until the low-
pressure setpoint is reached. The Torit Delta P Plus will also initiate a downtime clean if the low setpoint has been reached.
Electrical installation, 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 all power before performing service or maintenance work.
Do not install in classified hazardous atmospheres without an enclosure rated for the application.
Electrical Wiring
All electrical wiring and connections, including electrical grounding, should be made in accordance with the National Electric Code
(NFPA No. 70-latest edition).
Check local ordinances for additional requirements that apply.
The appropriate wiring schematic and electrical rating must be used. See collector’s rating plate for required voltage.
An electric disconnect switch having adequate amp capacity shall be installed in accordance with Part IX, Article 430 of the
National Electrical Code (NFPA No. 70-latest edition). Check collector’s rating plate for voltage and amperage ratings.
Refer to the wiring diagram for the number of wires required for main power wiring and remote wiring.
