BLACKMER EBSRAY RC20, Installation, Operation And Maintenance Instructions

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INSTALLATION
MOTOR MOUNTING FLANGE
These models incorporate a motor mounting flange that allows
direct mounting to either a NEMA or an IEC flanged
motor. See Dimensions page for details. If a footed motor is
used, the motor must not be secured to baseplate.
COUPLINGS
Operation without guards in place can
cause serious personal injury, major
property damage, or death.
Do not operate
without guard
in place
Couplings must be of the non-sparking design and be in
compliance with the relevant Directives, Standards, Codes &
Regulations
The pump must be directly coupled to a driver with a flexible,
non-sparking coupling. Verify the coupling gap per the
Dimension page after installation of new or rebuilt pumps.
Replace the coupling guards after checking the gap.
EXTERNAL BYPASS VALVE
For ALL liquefied gas applications, install an external bypass
valve, and any necessary piping, back to the storage tank. DO
NOT pipe the bypass valve back to the intake line.
Bypass valve shall be sized and
adjusted so the maximum pressure of
the system does not exceed the lowest
service pressure rating of any
component used in the delivery system.
Hazardous pressure
can cause serious
personal injury or
property damage
Bypass Valve (Ebsray Model RV18-VRS or CBS) (Refer ‘P&ID’
schematic for details) is installed on the pump discharge side and
returns back-to-tank. It may be mounted directly on the 'spare'
discharge port or in the discharge pipe (before any isolation valve).
This Bypass Valve is primarily for control of differential pressure.
(NOTE: Variation in tank vapor pressure has a direct effect upon
discharge pressure whilst constant differential pressure is
maintained).
Ensure correct orientation i.e. flow is 'IN' from pump discharge
line and 'OUT' returns to tank.
The Bypass Valve’s return-to-tank pipeline MUST NOT have any
restrictions which could adversely affect, limit or block the
unrestricted the vapor clearing function during pump priming.
Flow of LPG during bypassing should return to Storage Tank
vapor space.
An Excess Flow Valve or other 'normally open' tank valve is
recommended.
CHECK VALVES
A ‘soft-seat’ check valve in the discharge line is recommended,
particularly if the discharge line is over 100 ft (30 m). Refer to
‘P&ID’ schematic for system arrangement.
The use of check valves or foot valves in the supply tank is not
recommended.
PUMP ROTATION
The proper rotation direction is indicated on the pump cover
and cannot be changed.
NOTICE:
Confirm correct pump rotation by checking the pump flow
/ rotation arrows respective to pump driver rotation. Do
not operate the pump at the wrong rotation.