FIGURE 15
SIZE Q, QS AND M
PRESSURE RELIEF VALVE
INSTRUCTIONS
LIST OF PARTS
1.
Valve Cap
6.
Valve Body
2.
Adjusting Screw
7.
Valve Spring
3.
Lock Nut
8.
Poppet
4.
Spring Guide
9.
Cap Gasket
5.
Bonnet
10.
Bonnet
FIGURE 14
Size LS
INSTALLATION OF CARBON
GRAPHITE BUSHINGS
When installing carbon graphite bushings, extreme care
must be taken to prevent breaking. Carbon graphite is a
brittle material and easily cracked. If cracked, the bushing
will quickly disintegrate. Using a lubricant and adding a
chamfer on the bushing and the mating part will help in
installation. The additional precautions listed below must be
followed for proper installation:
1.
A press must be used for installation.
2.
Be certain bushing is started straight.
3.
Do not stop pressing operation until bushing is in proper
position. starting and stopping will result in a cracked
bushing.
4.
Check bushing for cracks after installation.
Carbon graphite bushings with extra interference fits are
frequently furnished for high temperature operation. These
bushings must be installed by a shrink fit.
1.
Heat bracket or idler to
750 °
F.
2.
Install cool bushings with a press.
3.
If facilities are not available to reach
750 °
F.
temperature, it is possible to install with
450 °
F.
temperature; however, the lower the temperature, the
greater the possibility of cracking bushing.
Consult factory with specific questions on high temperature
applications.
Refer to Engineering Service Bulletin ESB-
3.
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.
THAT YOU KNOW WHAT LIQUID THE PUMP
HAS BEEN HANDLING AND THE
PRECAUTIONS NECESSARY TO SAFELY
HANDLE THE LIQUID. OBTAIN A MATERIAL
SAFETY DATA SHEET (MSDS) FOR THE
LIQUID TO BE SURE THESE PRECAUTIONS
ARE UNDERSTOOD.
FAILURE TO FOLLOW ABOVE LISTED
PRECAUTIONARY MEASURES MAY RESULT IN
SERIOUS INJURY OR DEATH.
SECTION TSM 141.2
ISSUE
C
PAGE 11 OF 13
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