Parker DUSTHOG PNP, Owner'S Manual

22

DUSTHOG PNP Series

Problem

Possible Causes

Recommended Soluons

Lack of Air Flow

Restricon at the outlet of unit

Be sure there are no obstrucons in close proximity to the outlet at the top of 
the unit

Inaccurate dP readings, leading to possible 
auto-flow malfuncon

Check for misaligned filters, leaks in ducng, leaks in plumbing, filter failure, or 
transducer and connecon failures

Blinded filters

Replace filter(s)

Leaking gaskets

Check for damaged gaskets and replace if necessary, careful adjustment of 
latch paws may be necessary if leak persists

Restricon or blockage in inlet ducng

Verify all dampers are open, duct is unobstructed

Pulse cleaning system problems

See secon below

System Power Disrupon

Tripped circuit breaker

Open rear panel on unit and switch breaker if necessary

Loose or disconnected wires

Invesgate wiring in the rear panel

Disconnect is switched to OFF posion

Switch disconnect to ON posion

Improper source power

Refer to data plate to verify required input power

Compressed air supply inadequate

Always begin diagnosing cleaning system issues by ulizing the touch screen 
controls. Check incoming compressed air for proper pressure (90-110 PSIG [6.4-
7.2 BAR]), pulse flow (1.47 SCF standard cubic feet [41.6 liters] per pulse) and 
pulse duraon (100 milli-seconds), correct any problems

Set points incorrect

Confirm all program inputs are suitable for the applicaon

Solenoid not firing properly

Check wiring going to solenoids, nozzle blockage and posion, the manifold is 
properly drained and clean, no leaks

Screen Displayed Warning

Possible Causes

Recommended Soluons

Filter Cauon

Filters approaching end of life

Replace filter(s) soon, ensure proper pulse cleaning operaon, increase down-
me cleaning cycles

(Yellow)

Restricon in dP readings

Check for kinked tubing, obstructed pressure taps

Filter Warning

Filters have surpassed max life

Replace filter(s)

(Red)

Blinded filters

Clean filter(s)
Replace filter(s)

Pressure taps obstructed

Check and clear pressure taps in the unit

Pressure tubing is kinked or plugged

Check and clear all tubing in the unit

Blower Warning*

Improper source power

Refer to data plate to verify required input power

(Red)

Phase loss

Check for loose/disconnected wires, shorts, or tripped circuit breakers

Motor over-temperature

Shut system off (if not already) and allow motor to cool. If issue repeats, 
contact a UAS rep

Auto-flow set point cannot be reached

Verify auto-flow value is set properly, check filter(s) for replacement
Reduce stac pressure in system
Refer to "Lack of air flow" secon above

Other

Contact a UAS representave for assistance

*Always refer inially to the fault screen displayed on the unit

Total system stac pressure exceeds blower 
capability

Pulse Cleaning System 
Ineffecve

6. Troubleshooting Guide

Use the troubleshooting guide to correct any problems that occur with your dust/fume collection unit.  
If the problem or condition continues, contact the Parker customer service office at 1-800-343-4048.

 All electrical/mechanical troubleshooting should be performed by a qualified electrician/maintenance 
individual familiar with Parker equipment.
 Prior to troubleshooting any equipment, read the Installation and Operation Manuals for each piece  
of equipment to be serviced.