Service manual

ManualsBrandsBE ManualsHeaterHL125F

CONTENTS

Special Information 2

Maintenance 2

Packed Pumps 3

Mechanical Seal Pumps

Standard Rubber Bellows Type

(Sizes G, H, HL, K, KK, L, LQ & LL) 6

Optional Teflon Seal 9

Standard Rubber Bellows Type

(Sizes AK&AL) 11

Thrust Bearing Adjustment 13

Installation of Carbon Graphite Bushings 13

Pressure Relief Valve Instructions 14

INTRODUCTION

The illustrations used in this manual are for identification

purposes only and cannot be u

sed for ordering parts. Obtain

a parts list from the factory or a Viking® representative.

Always give complete name of part, part number and

material with model number and serial number of pump

when ordering repair parts. The unmounted pump or pump

unit model number and serial number are on the nameplate.

In the Viking model number system, basic size letters are

combined with series number (125 and 4125) indicating both

unmounted or mounted pump unit.

This manual deals only with Series 125 and 4125 Heavy

Duty

Bracket Mounted Pumps. Refer to Figures 1 thru 19 for

general configuration and nomenclature used in this manual.

Pump specifications and recommendations are listed in

Catalog Section 141, Series 125 and 4125 Heavy

Duty

Bracket Mounted Pumps.

VIKING PUMP INC. •

A Unit of IDEX Corporation •

UNMOUNTED PUMP UNITS

PACKED MECH. SEAL

G125 G4125

H125 H4125

HL125 HL4125

AK125 AK4125

Units are designed by the

unmounted pump model

numbers followed by a letter

indicating drive style.

AL125 AL4125

K125 K4125

V=V-belt

KK125 KK4125

D=Direct Connected

L125 L4125

R=Viking Speed Reducer

LQ125 LQ4125

P=Commercial Speed Reducer

LL125 LL4125

FIGURE 4

Sizes LQ and LL

FIGURE 3

Sizes K. KK and LL

FIGURE 2

Sizes AK and AL

FIGURE 1

Sizes G, H and HL

TECHNICAL SERVICE MANUAL

HEAVY-DUTY BRACKET MOUNTED PUMPS

SERIES 125 and 4125

SIZES G-LL

SECTION

TSM 141.1

PAGE 1

ISSUE C

Summary of content (15 pages)

PAGE 1
TECHNICAL SERVICE MANUAL HEAVY-DUTY BRACKET MOUNTED PUMPS SERIES 125 and 4125 SIZES G -LL SECTION TSM 141.
PAGE 2
SPECIAL INFORMATION SPECIAL INFORMATION SPECIAL MECHANICAL SEALS can be installed either next to rotor hub or in an altered stuffing box. DANGER Extra care must be taken in repair of pumps with mechanical seals. Read and follow all special information supplied with pump. BEFORE OPENING ANY VIKING PUMP LIQUID CHAMBER (PUMPING CHAMBER, RESERVOIR, RELIEF VALVE ADJUSTING CAP FITTING ETC.) BE SURE: MAINTENANCE 1.
PAGE 3
PACKED PUMPS CASING IDLER BALL BEARING BRACKET BUSHING IDLER PIN ROTOR PACKING GLAND HEAD PACKING RINGS LIP SEAL OUTER END CAP VALVE BODY POPPET VALVE SPRING SHAFT SPRING GUIDE LOCKNUT BONNET OUTER END CAP LOCKNUT INNER END CAP ADJUSTING SCREW HEAD GASKET LIP SEAL INNER END CAP BRACKET VALVE CAP PACKING RETAINING WASHER PIPE PLUG BRACKET GASKET VALVE GASKET FIGURE 5 Cutaway View of G 125 with Callouts Exploded View of Models G125, H125, HL125, AK125, Al 125, K125, KK125, L125, LQ125, a
PAGE 4
DISASSEMBLY 6. Carefully remove rotor and shaft to avoid damaging bracket bushing. DANGER 7. Remove packing gland from side of bracket. BEFORE OPENING ANY VIKING PUMP LIQUID CHAMBER (PUMPING CHAMBER, RESERVOIR, RELIEF VALVE ADJUSTING CAP FITTING ETC.) BE SURE: GREASE FITTING LOCATION 1. THAT ANY PRESSURE IN CHAMBER HAS BEEN COMPLETELY VENTED THROUGH SUCTION OR DISCHARGE LINES OR OTHER APPROPRIATE OPENINGS OR CONNECTIONS. NYLON INSET SETSCREWS INNER END CAP OUTER END CAP HALF ROUND RINGS 2.
PAGE 5
3. Place packing retainer washer in bottom of packing chamber and pack pump with new packing. Use packing suitable for liquid being pumped. Install packing, staggering the joints from one side of shaft to other. Lubricate packing rings with oil, grease or graphite to aid assembly. A length of pipe will help to seat each packing ring. 12. Adjust pump end clearance. Refer to Thrust Bearing Adjustment, page 13. 13. Lubricate all grease fittings with multi-purpose grease, NLGI #2. 4.
PAGE 6
MECHANICAL SEAL PUMPS INNER END CAP MECHANICAL SEAL LIP SEAL INNER END CAP CASING ROTOR BRACKET BUSHING IDLER SHAFT IDLER PIN OUTER END CAP LOCKNUT VALVE BODY POPPET LOCKWASHER VALVE SPRING LIP SEAL OUTER END CAP BONNET GASKET SPRING GUIDE BALL BEARING SETSCREW BONNET PIPE PLUG LIPSEAL HEAD CAP GASKET VALVE GASKET HEAD GASKET BRACKET GREASE FITTING LOCKNUT ADJUSTING SCREW BRACKET GASKET VALVE CAP FIGURE 7 Cutaway View of KK 4125 with Callouts Exploded View for Models G4125, H4125, HL41
PAGE 7
DISASSEMBLY 7. Loosen setscrews. Two for G, H and HL size pumps, four for all other sizes. With spanner wrench remove both end caps and lip seals. Remove ball bearing and spacer collars. Refer to Figure 6, page 4. DANGER 8. Examine seal chamber lip seal and remove if it shows w ear or damage. Lip seal must be removed if bracket bushing needs to be replaced. BEFORE OPENING ANY VIKING PUMP LIQUID CHAMBER (PUMPING CHAMBER, RESERVOIR, RELIEF VALVE ADJUSTING CAP FITTING ETC.) BE SUR E: 9.
PAGE 8
Prior to installing rotating portion of mechanical seal, prepare and organize rotor shaft, head and idler assemblies and appropriate gaskets for quick assembly. SPRING MECHANICAL SEAL ROTARY MEMBER SHAFT Once rotating portion of mechanical seal is installed on rotor shaft, it is necessary to assemble parts as quickly as possible to insure that seal does not stick to shaft in wrong axial position. The seal should be expected to stick to the shaft after several minutes setting time.
PAGE 9
If pump is equipped with jacketed head plate, install at this time along with new gasket. ASSEMBLY Tighten head capscrews evenly. Optional Mechanical Seal (Teflon Fitted Type) Remove tapered installation sleeve from the shaft. The seal type shown in Figures 12, 13 and 14 can be installed as an alternate to the standard mechanical seal (synthetic rubber bellows type). These seals are setscrew driven and the stationary seats have anti-rotation pins which mate with slots in the end of the bracket bushing.
PAGE 10
6. Place tapered installation sleeve (furnished with H, HL, K, KK, L, LQ and LL size replacement mechanical seals) on shaft. Refer to Figure 13. Coat inner diameter of seal rotary member, tapered installation sleeve and the shaft with a generous quantity of non-detergent SAE 30 weight oil. Place rotary member on shaft over sleeve and against hub of rotor. Refer to Figure 14. TAPERED INSTALLATION SLEEVE MECHANICAL SEAL ROTARY MEMBER SHAFT FIGURE 13 ROTOR HUB MECHANICAL SEAL ROTARY MEMBER SHAFT 0.
PAGE 11
Exploded View for Models AK41 25 and AL41 25 (Model AK41 25 shown) ITEM 1 2 3 4 5 6 7 8 9 NAME OF PART Locknut Lockwasher End Cap (Outer) Lip Seal for End Cap Bearing Spacer Collar (Outer) Ball Bearing Bearing Spacer Collar (Inner) Ring, Half Round End Cap (Inner) ITEM 10 11 12 13 14 15 16 17 18 NAME OF PART ITEM Seal Holder Nut Seal Holder Capscrew Seal Plate Seal Holder Mechanical Seal Set Collar with Setscrews Pipe Plug Grease Fitting Bracket and Bushing 19 20 21 22 23 24 25 26 27 NAME OF PART
PAGE 12
10. Loosen the four setscrews over outer and inner end caps. With spanner wrench remove both end caps and lip seals. Remove ball bearing and spacer collars. Refer to Figure 6, page 4. 11. Clean all parts thoroughly and examine for wear or damage. Check lip seals, ball bearing, bushings and idler pin and replace if necessary. Check all other parts for nicks, burrs, excessive wear and replace if necessary. 6.
PAGE 13
End cap must not be turned so far that lip seal drops off end of spacer collar on shaft or end cap becomes disengaged from threads. Refer to Figure 6, page 4. 7500 and 75,000 SSU (e.g., resins) triple the amount and for viscosities greater than 75,000 SSU (e.g., black strap molasses) use 4 times the amount. For specific recommendations for end clearances for viscosity or for operating temperatures above 225 °F, check with your Viking representative or consult the factory.
PAGE 14
PRESSURE RELIEF VALVE INSTRUCTIONS DISASSEMBLY DANGER BEFORE OPENING ANY VIKING PUMP LIQUID CHAMBER (PUMPING CHAMBER, RESERVOIR, RELIEF VALVE ADJUSTING CAP FITTING ETC.) BE SURE: 1. THAT ANY PRESSURE IN CHAMBER HAS BEEN COMPLETELY VENTED THROUGH SUCTION OR DISCHARGE LINES OR OTHER APPROPRIATE OPENINGS OR CONNECTIONS. 2. THAT THE DRIVING MEANS (MOTOR, TURBINE, ENGINE, ETC.) HAS BEEN “LOCKED OUT” OR MADE NON OPERATIONAL SO THAT IT CANNOT BE STARTED WHILE WORK IS BEING DONE ON PUMP. 3.
PAGE 15
TECHNICAL SERVICE MANUAL SECTION TSM141.1 PAGE 15 ISSUE C HEAVY-DUTY BRACKET MOUNTED PUMPS SERIES 125 and 4125 SIZES G -LL PRESSURE ADJUSTMENT If a new spring is installed or if pressure setting of pressure relief valve is to be changed from that which the factory has set, the following instructions must be carefully followed. 1. Carefully remove adjusting screw. valve cap which covers Loosen locknut which locks adjusting screw so pressure setting will not change during operation of pump. 2.