BLACKMER 111-G01, Installation, Operation And Maintenance Instructions

Page: 7 / 16

111-G00 Page 7/16
OPERATION
OPTIONAL RELIEF VALVE SETTING AND
ADJUSTMENT
The relief valve pressure setting/range is marked on a metal
tag attached to the valve cover. The relief valve should be
set at 20 PSI (0.7-1.4 Bar) higher than the operating pressure
or system pressure control valve, but no higher than the
maximum working pressure of the pump.
Hazardous pressure
can cause personal
injury or property
damage
Incorrect settings of the pressure relief
valve can cause pump component
failure, personal injury, and property
damage.
Hazardous or toxic
fluids can cause
serious injury.
Relief valve cap is exposed to pumpage
and will contain some fluid.
DO NOT remove the R/V cap OR adjust the relief valve
pressure setting while the pump is in operation.
1. To INCREASE the pressure setting , remove the relief
valve cap (1) and O-ring (88). Loosen the locknut (3).
Turn the adjusting screw (2)
inward , or clockwise .
Inspect R/V cap O-rings and replace as required.
Reattach R/V cap O-ring and RV cap.
2. To DECREASE the pressure setting , remove the relief
valve cap (1) and O-ring (88). Loosen the locknut (3).
Turn the adjusting screw (2)
outward, or
counterclockwise . Inspect R/V cap O-rings and replace
as required. Reattach R/V cap O-ring and RV cap.
Refer to the individual Blackmer pump parts lists for various
spring pressure ranges. Unless specified otherwise, pumps
are supplied from the factory with the relief valve adjusted to
the mid-point of the spring range.
MAINTENANCE:
Hazardous
machinery can
cause serious
personal injury.
Failure to disconnect and lockout
electrical power or engine drive before
attempting maintenance can cause
severe personal injury or death
Hazardous pressure
can cause personal
injury or property
damage
Disconnecting fluid or pressure
containment components during pump
operation can cause serious personal
injury, death or major property damage
Hazardous voltage.
Can shock, burn or
cause death.
Failure to disconnect and lockout
electrical power before attempting
maintenance can cause shock, burns or
death
Hazardous or toxic
fluids can cause
serious injury.
If pumping hazardous or toxic fluids,
system must be flushed and
decontaminated, inside and out, prior to
performing service or maintenance
Hazardous pressure
can cause personal
injury or property
damage
Failure to relieve system pressure prior
to performing pump service or
maintenance can cause personal injury
or property damage. NOTICE:
Maintenance shall be performed by qualified
technicians only. Follow the appropriate procedures
and warnings as presented in this manual.