Viking Pump TSM320.2: GG-HL 75/475 - Manual

SECTION TSM 320.2
PAGE
1 OF 9
ISSUE F
VIKING PUMP, INC. • A Unit of IDEX Corporation •
Cedar Falls, IA 50613 USA
TECHNICAL SERVICE MANUAL
CONTENTS
INTRODUCTION
The illustrations used in this manual are for identification
purposes only and should not be used for ordering parts.
Secure a parts list from the factory or a Viking ® representative.
Always give complete name of part, part number and
material, with the model number and serial number of the
pump when ordering repair parts. This model number and
serial number can be found on the nameplate attached to
the pump casing. This is important identification for ordering
parts or replacement pump. It is positive assurance you will
receive the correct pump parts.
Your pump is composed of four major parts. Only two of these
are moving parts: the rotor and idler.
An exploded parts drawing and list of parts is included to help
you identify each part correctly. However, to disassemble
and reassemble the pump, you will be covered step by step.
Refer to pages 2 to 9.
FIGURE 1
UNMOUNTED PUMP SHOWING
FRONT VIEW OF G AND GG SIZE
Introduction . . . . . . . . . . . . . . . . . . . . . . . 1
Interchangeability . . . . . . . . . . . . . . . . . . . . 1
Special Information . . . . . . . . . . . . . . . . . . . 1
Safety Information. . . . . . . . . . . . . . . . . . . . 2
Maintenance . . . . . . . . . . . . . . . . . . . . . . 3
Disassembly . . . . . . . . . . . . . . . . . . . . . . 4
Assembly . . . . . . . . . . . . . . . . . . . . . . . . 4
To Reassemble Model G75 & GG75 . . . . . . . . . . 4
To Reassemble Model H75, HJ75 & HL75 . . . . . . . 6
To Reassemble Model G475 & GG475 . . . . . . . . . 7
To Reassemble Model H475, HJ475 & HL475 . . . . . 8
Safety Relief Valve Instructions . . . . . . . . . . . . . 8
Pressure Adjustment . . . . . . . . . . . . . . . . . . 9
UNMOUNTED PUMP MODELS
WITH LIP SEAL WITH MECHANICAL SEAL
G75 G475
GG75 GG475
H75 H475
HJ75 HJ475
HL75 HL475
MOUNTED PUMP MODELS
WITH
LIP SEAL
WITH
MECHANICAL
SEAL
NORMAL GPM
@ 1200
RPM
@ 1800
RPM
G75M G475M 5 7
GG75M GG475M 7 10
H75M H475M 10 15
HJ75M HJ475M 13 20
HL75M HL475M 20 30
INTERCHANGEABILITY
These pumps are furnished with either a mechanical seal or
lip seal.
All models of the mechanical seal pumps and lip seal pumps
are dimensionally interchangeable on any NEMA “C” flange
motor. The mechanical seal is interchangeable with the lip
seal in all pump sizes.
INSTALLATION
The suction line should be air tight and at least as large as
the pump suction port connections to prevent loss of prime
or capacity. It should also be equipped with a strainer and if
pumping light liquids at a high suction lift, a foot or check valve
should be used. Always avoid high spots and obstructions in
the suction line as these may cause noise, loss of capacity
or air lock. Since these are positive displacement pumps,
be sure there is no obstruction in the discharge line and all
valves are in operating position before starting the pump. Be
sure the adjusting screws of the relief valve on the pump point
towards the suction port. Factory assembled pumps will have
right hand port suction and left hand port discharge unless
otherwise specified. Port location is determined by looking at
the mounting flange end of the pump. The relief valve on the
pump is excellent insurance against a clogged discharge line
or closed valves in the discharge line.
SPECIAL INFORMATION
ROTATION: Viking pumps operate equally well in a clockwise
or counterclockwise rotation. Shaft rotation determines which
port is suction and which is discharge. Port in area where
pumping elements (gear teeth) come out of mesh is suction
port.
Electronic copies of the most current TSM issue can be found on the Viking Pump website at www.vikingpump.com
GENERAL PURPOSE SPECIAL MOUNTED PUMPS
SERIES 75 AND 475
SIZES G - HL