
YZ Systems Milton Roy • 201 Ivyland Road • Ivyland, PA • USA • 18974 • P: 281.362.6500 • www.yzsystems.com
Page 102
NJEX ZEO Version 04/13/2021
17. In a star pattern, torque the eight pump
head cap screws (Item 558) to 265-275 ft-
lbs (30-31 Nm). Do not use a threadlocker
on these fasteners.
18.
Reconnect the 1/8” tubing on the lower
right side of the pump head.
19. Using grease or lubricant to hold in place,
install the replacement face seal o-rings in
the manifold and intermediate block.
20. Install the intermediate block by first
fastening the cap screws that attached the
block to the manifold from the right side.
NOTE:
Apply Loctite 242 or equivalent to
intermediate block fasteners before installing.
21. To fasten the intermediate block to the
pump head, use the flat head taper screw
located in the middle to align the
intermediate block and pump head. Fasten
the remaining two cap screws.
22. Torque cap screws items 930 and 940 to
5.4 ft-lbs (0.61 Nm)
23. Torque cap screws items 920 and 923 to
2.3 ft-lbs (0.26 Nm).
24. Ensure the oil drain valve is closed and
refill the injection pump with oil.
25. Follow the maintenance instructions in this
manual to prime the system for normal
operation and follow the oil fill startup
procedures to ensure all air is worked out
of the pump prior to resuming normal
operation.
26. Disconnect the pressure switch tubing in
the lower cabinet below the check valve
and allow mineral oil to begin purging
from the line while the injection pump is
running. After the mineral oil begins
purging, reconnect the tubing fitting. See
Figure 63 Pressure Switch Line Fitting for
reference.
Figure 63 Pressure Switch Line Fitting
Figure 61 Pump Head Prepared for Assembly
with Diaphragm Retaining Tool Installed
Figure 62 Pump Head Prepared for
Assembly while Injecting Mineral Oil
Содержание NJEX ZEO 6400
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