7
STARTUP CHECKLIST
We recommend that these startup procedures are followed in sequence and checked (v ) off in the boxes provided in any
of the following cases:
•
During initial installation
•
After any shutdown period
•
After maintenance work has been performed
•
After system has been moved to a new location
Dates Checked
1. Check that the proper electrical power is connected to the control panel. Unless otherwise
specified, the standard motor control center is wired and equipped with overload protection
and fusible disconnect switch for 3/60/460v.
WARNING:
Make certain power is off and locked out before touching any rotating
element of the pump, motor or drive components.
2. Check that the cooling water supply to the liquid ring pump heat exchanger is adequate in
terms of flow rate, temperature, and supply pressure. Refer to the specification sheet
accompanying the system for proper flow rate, temperature, and supply pressure.
3. Check that the proper size inlet and outlet piping is connected to the vacuum system. A
flexible connector is provided on the suction line. A discharge flexible connector should also
be used when piping to it.
4. Fill the separator tank with the appropriate sealant (water for DRSP/DRDP/ACRP or LR oil for
OFRP systems) for which the system has been designed until the level in the sight glass
coincides with the shaft level in the pump. Be sure that the valves between the separator tank
and pump sealant inlet are open to allow free flow of sealant to the heat exchanger and liquid
ring pump during filling. At no time should the liquid level be allowed to fall below the outlet
connection on the separator tank.
5. After filling the liquid ring pump with the appropriate sealant to the proper level, check
positioning of the hand valves.
a) Check that the small gland cooling valves leading to the mechanical seals are opened
fully. They may be throttled down to half way open later if slightly higher vacuum is
desired.
b) Check that the sealant inlet valve is opened fully.
c) Check that the inlet gas isolation valve is partially opened.
d) If the pump is equipped with an attenuation valve mounted on the interstage casing, it
should be closed before start up and shut down.
e) On the OFRP systems, check that the needle valve on the return line of the oil mist
eliminator is fully opened. It can be adjusted later to half open as necessary to achieve a
deeper vacuum and still collect oil.
6) On initial start-up or if the pump has been sitting inactive for a long period of time, rotate the
pump by hand to be sure it is mechanically free.
7) Jog each motor to check the proper direction of rotation. Facing the drive shaft of each pump:
a) All KLRC liquid ring pumps turn clockwise, except for the KLRC-40 and KLRC-75 which
both turn counterclockwise.
b) If the system is equipped with an optional circulating pump, check for an arrow cast
directly on the pump.
8) Check that the ambient temperature is within the design capabilities of the equipment.
Standard design ambient temperatures are between 50 to 104 °F (10-40° C) Modifications
may be required for start up at ambient temperatures outside of this range.