13
SECTION 3
OPERATION
3.1 PUMP START-UP PROCEDURE
Before initial start up of the pump, check the follow-
ing:
FAILURE TO CHECK ALL METALLIC
HEAD BOLTS PRIOR TO STARTUP AND
AFTER ONE WEEK OF OPERATION
MAY EXPOSE OPERATING PERSON-
NEL TO HAZARDOUS LIQUIDS
DO NOT RUN THE MOTOR UNTIL ALL
START UP STEPS HAVE BEEN COM-
PLETED. YOU COULD DAMAGE THE
PUMP IF YOU RUN THE MOTOR
BEFORE ALL OF THE STEPS HAVE
BEEN COMPLETED. IT MAY BE NECES-
SARY TO TEST THE MOTOR OFF THE
PUMP TO INSURE PROPER DIRECTION
AND OPERATION. THE MOTOR DIREC-
TION IS CRITICAL. WIRE THE MOTOR
SO THAT IT ROTATES IN THE DIREC-
TION OF THE ARROW CAST ON THE
MOTOR MOUNT FLANGE. CONSULT
MANUFACTURER DOCUMENTATION
FOR MOTOR START UP RECOMMEN-
DATIONS
1. Check the torque on all metallic head bolts
prior to startup. Recheck torque on all
metallic head bolts after pump has been
operating for one week. Torque the head
assembly screws in a crosswise pattern as
follows:
a) mRoy Model XT Heads: 60–70 in. lbs. (7-
8 N-m) bolting torque.
b) mRoy Model XW Heads:75–85 in. lbs.
(8.5-9.6 N-m) bolting torque, tie down
nuts— 25 in. lbs. (3 N-m).
2. Oil level in air bleed filler reservoir up to or
slightly above the indicated oil level.
3. Set the capacity control knob to
approximately 30-40% of maximum capacity.
4. Make certain that the suction line, liquid end
and discharge cartridge are filled with water
or system fluid.
5. Relieve all back pressure in the discharge
line and pump hydraulic system to allow air
to purge. Reduce pressure on the oil relief
valve until air is purged. Refer to “Start-Up
after the Suction System has Run Dry”
section.
6. If practical, install a temporary discharge line
piped back to the suction tank incorporating
a 100 PSI (7 Bar) relief valve to facilitate
establishing performance during first hours
of operation.
On initial start-up, run the pump for 10–20 sec-
onds, then stop for 20–30 seconds. Repeat a few
times in order to fill the diaphragm oil cavity. Check
for proper motor rotation as described in general
installation instructions. During these short runs lis-
ten for any abnormal motor or crank noises, and if
present, refer to Section 5, Troubleshooting.
Run pump for 1/2 to 1-1/2 hours to warm up oil.
Check discharge line for indication of flow.
Increase capacity adjustment setting to 100% of
capacity and operate for 10–20 minutes
DO NOT SET THE CAPACITY ADJUST-
MENT KNOB IN EXCESS OF 100%
BECAUSE ERRATIC OR REDUCED
METERING WILL DEVELOP.
Reduce capacity adjustment setting to 30–40% of
maximum capacity and operate for several min-
utes, then increase capacity adjustment back to
100% for approximately 10 minutes. Repeat sev-
eral times to insure that the air is bled from the
pump displacement chamber and the liquid end.
(As a general rule, to bleed air or vapor from the
pump oil displacement chamber reduce the capac-
To Next Page
Loading...
Need help?
General
