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READ THIS ENTIRE PAGE BEFORE PROCEEDING 

 
 

FOR SAFETY OF PERSONNEL AND TO PREVENT DAMAGE TO THE EQUIPMENT, 
THE FOLLOWING NOMENCLATURE HAS BEEN USED IN THIS MANUAL: 

 

Warning Level 

Risk Level 

Consequences of disregarding the warning 

  

DANGER

 

Immediate Acute Risk 

Death, Serious Bodily Harm 

 

WARNING 

Potential Acute Risk 

Death, Serious Bodily Harm 

  

CAUTION 

Immediate Hazardous 

Situation 

Minor Bodily Harm, Material Damage 

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  NOTE 

Potentially Hazardous 

Situation 

Minor Bodily Harm, Material Damage 

 
 
 

Symbol Meaning 

 

Safety Warning

 –

 

Take note of all information highlighted by a Safety Warning Sign 

and follow the instructions to avoid damage to equipment, injury to personnel or 
death.

 

 

 

Electrical Hazard

 – Contact with electrical equipment can cause shock.  Contact of 

electrical equipment with water can cause shock.  Do NOT touch with wet hands.  
Always disconnect when not in use. 

 
 
 

CONTENTS 

 

Cover Sheet .......................................................................................................................................................... 1 
Safety and Table of Contents ................................................................................................................................ 2 
General Instructions .............................................................................................................................................. 3 
Pump Model Identification ..................................................................................................................................... 3 
Description of the Equipment ................................................................................................................................ 4 
Ordering Instructions ............................................................................................................................................. 4 
Operation and Operating Limits ............................................................................................................................ 4 
Spare Parts and Kits ............................................................................................................................................. 5 
Inspection .............................................................................................................................................................. 6 
Pump Maintenance ............................................................................................................................................... 6 
Pump Disassembly Instructions ............................................................................................................................ 6 
Pump Assembly Instructions ................................................................................................................................. 8 
Installation, Alignment and Troubleshooting ......................................................................................................... 9 
Field and Factory Service / Parts .......................................................................................................................... 9 
Pump Assembly Drawings .................................................................................................................................. 10 

 

 

 

IMPORTANT NOTE 

If operation of pump is critical to your business, we strongly recommend keeping a spare pump in stock at all 
times.  As a minimum, a minor repair kit (O-rings, gaskets, shaft seal, bearings and retainers) should be kept in 
stock so pump refurbishment can be readily accomplished after inspection. 

Summary of Contents for IMO CFHN Series

Page 1: ...s manual AND the following CE compliant manuals should be read thoroughly and in their entirety prior to pump installation operation and maintenance Manual No SRM00100 Safety and Operation Manual Manu...

Page 2: ...tact with electrical equipment can cause shock Contact of electrical equipment with water can cause shock Do NOT touch with wet hands Always disconnect when not in use CONTENTS Cover Sheet 1 Safety an...

Page 3: ...overs only CFHN series pumps These pumps have been designed for general use in lubricating seal and distillate fuel oil applications Size and construction of each pump is identified in model number on...

Page 4: ...inlet pressure discharge pressure filtration duty cycle drive type mounting etc are interrelated Due to these variable conditions specific application limits may be different from that of operational...

Page 5: ...nt versions POS NO 6 Qty 6 on right angle inlet versions size 20 pumps POS NO 6 Qty 8 on right angle inlet versions of sizes 40 through 90 G INSPECTION Interval for inspection and replacement of worn...

Page 6: ...removed parts can be properly replaced CAUTION When removing inboard cover 4 from pump DO NOT pull out power rotor 7 and idler rotors 8 at same time since they may drop out and be damaged If rotors s...

Page 7: ...eve by pushing on ball bearing 11 inner ring only until ball bearing 11 is positioned against shoulder on power rotor 7 2 Install retaining ring 15 in groove into power rotor 7 3 Before installing sea...

Page 8: ...SHOOTING Install coupling to pump drive shaft Align pump and driver shafts per Manual SRM00101 Connect piping to pump Open inlet and outlet line valves Vent air from seal chamber before starting pump...

Page 9: ...9 Figure 4 CFHN020 Pumps...

Page 10: ...10 Figure 5 CFHN040 060 and 090 Pumps 10...

Page 11: ...VENT ORIENTATION NOT CRITICAL WITH VERTICAL MOUNTING 2 THESE PARTS FOR FOOT MOUNT OPTION ONLY INLET OUTLET SECTION A A 1 16 MAX 47 8 WEEP SEAL VENT 3 95 95 TORQUE TO 61 N M 7 N M 3 3 47 16 4 7 13 15 1...

Page 12: ...12 CIRCOR 1710 Airport Road PO Box 5020 Monroe NC USA 28111 5020 Tel 1 877 853 7867 Email cc circor com Web www circorpt com 2021 CIRCOR Pumps North America LLC All rights reserved...

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