Weir SPM QWS 2500 XL, Инструкция по эксплуатации и руководство по обслуживанию, Страница: 33 / 44

33 of 44
Document P/N: 2P137414
Release Date: 05/29/2017
Revision: IR
C.
Plunger Pump Valve Seating Procedure:
1. In order to protect the fluid cylinder from washing before sustained pumping begins, the tapered
valve seats must be pressured up and fully seated creating a positive fluid seal.
2. Adjust the test choke for high pressure/low pump RPM. Shift the transmission to 1st gear and
slowly increase the throttle setting to achieve the value in the table below for 2 to 3 minutes or
until a series of audible popping noises are heard; indicating that the seats have seated in the
taper. The desired pressure for each plunger size is as follows:
PLUNGER
DIAMETER
IN (MM)
SEATING
PRESSURE
PSI (MPA)
3 3/4 (95.3)
4,600 (31.7)
4 (101.6)
4,600 (31.7)
4 1/2 (114.3)
4,600 (31.7)
5
(127.0)
5,900 (40.7)
5 1/2 (139.7)
5,900 (40.7)
During this portion of the startup procedure, closely observe the plunger pump for any unusual
noise, vibration, fluid leaks, and oil leaks. Record all pertinent information such as elapsed time,
ambient temperature, power end lube oil temperature, power end lube oil pressure, supercharge
pressure, etc. After returning the engine to idle and transmission to neutral, physically inspect the
plunger pump before proceeding further.
D. Break-In
Procedure:
1. Adjust the test choke, engine, and transmission to obtain approximately the values in the table
below. These settings should be approximately as follows:
PLUNGER
DIAMETER
IN (MM)
INPUT SPEED
PINION PUMP
RPM
POWER
BHP KW
PRESSURE
PSI MPA
FLOW RATE
GPM BPM LPM
3 3/4 (95.3)
1300 205 1125 838.9
4434 30.6 391 9.3 1481
4 (101.6)
3897 26.9 445 10.6 1685
4 1/2 (114.3)
3079 21.2 564 13.4 2133
5 (127.0)
2494 17.2 696 16.6 2633
5 1/2 (139.7)
2061 14.2 842 20.0 3186
Run the plunger pump at this setting for one hour. During this time, closely observe the plunger
pump for any unusual noise, vibration, fluid leaks, and oil leaks. Record all pertinent information
such as elapsed time, ambient temperature, power end lube oil temperature, power end lube oil
pressure, supercharge pressure, etc. After returning the engine to idle and the transmission to
neutral, physically inspect the plunger pump before proceeding further.