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0901159 Rev: B (03/05) 

DISCLAIMER 

Knight LLC does not accept responsibility for the mishandling, misuse, or non-performance of the described items 
when used for purposes other than those specified in the instructions. For hazardous materials information consult 
label, MSDS, or Knight LLC. Knight products are not for use in potentially explosive environments. Any use of our 
equipment in such an environment is at the risk of the user, Knight does not accept any liability in such 
circumstances. 

WARRANTY 

All Knight controls and pump systems are warranted against defects in material and workmanship for a period of 
ONE year. All electronic control boards have a TWO year warranty. Warranty applies only to the replacement or 
repair of such parts when returned to factory with a Knight Return Authorization (KRA) number, freight prepaid, and 
found to be defective upon factory authorized inspection. Bearings and pump seals or rubber and synthetic rubber 
parts such as “O” rings, diaphragms, squeeze tubing, and gaskets are considered expendable and are not covered 
under warranty. Warranty does not cover liability resulting from performance of this equipment nor the labor to 
replace this equipment. Product abuse or misuse voids warranty. 

TROUBLESHOOTING 

PROBLEM 

SOLUTION 

(1) 

Unit will not operate. 

‰

 

Check for proper air pressure (40 PSI or more into 
unit). 40 PSI on Air Gauge. 

 

 

‰

 

Check Air Regulator Filter for obstruction such as 
water, oil, or debris. 

 

 

‰

 

Check for plugged strainer and replace Air 
Regulator Filter Assembly, if necessary. 

(2) 

Air passes through the pump without cycling. 

‰

 

Repair or replace the pump. 

(3) 

Pump cycles but no liquid is discharged. 

‰

 

Check to see if pump is primed. 

 

 

‰

 

Suction line leak or obstruction. 

 

 

‰

 

Pump fittings loose or broken. 

 

 

‰

 

Suction line not submerged down into liquid. 

 

If all of the above check out okay. 

‰

 

Repair or replace the pump. 

 

 

‰

 

No vacuum, or leak in line (on units equipped with 
vacuum switch). 

Atlanta Branch: 

415 Gees Mill Business Court NE, 

Suite 200 

Conyers, GA 30013 USA 

TEL: 770-760-8777 

FAX: 770-761-0199

Toronto Branch: 

2880 Argentia Road, Unit 6 

Mississauga, Ontario 

L5N 7X8 Canada 

TEL: 905-542-2333 

FAX: 905-542-1536

London Branch: 

#15 Brunel Centre 

Newton Road, Crawley 

West Sussex UK RH10 9TU 

TEL: 44-1293-615570 

FAX: 44-1293-615585

Sydney Branch: 

Unit 28, 317-321 

Woodpark Rd., Smithfield 

NSW Australia 2164 

TEL: 61-29-725-2588 

FAX: 61-29-725-2025

Amsterdam Branch: 

Marssteden 68 

7547 TD Enschede 

The Netherlands 

TEL: 31-53-428-58-00 

FAX: 31-53-428-58-09 

World Headquarters: 20531 Crescent Bay Drive, Lake Forest, CA 92630-8825 (USA) TEL: 949-595-4800, FAX: 949-595-4801, www.knightequip.com

 

KNIGHT LLC,

  A Unit of IDEX Corporation

 

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