MAINTENANCE
Pump Head Maintenance
Pump Head Assembly
Step 1:
Ensure all parts are clean and free from damage (see Inspection section). Lubricate all O-rings
with petroleum based lubricant; lubricate packing and plunger with a suitable packing lubricant grease
(Teflon or Graphite based packing lubricant is recommended, but an equivalent suitable lubricant like a
Molybdenum disulfide based lubricant can be substituted).
Step 2:
Install O-ring into bottom seat. Place the 1/2” ball into bottom seat
and the gasket (the widest of the four gaskets) onto the seat and cover ball
with ball cage. Place gasket onto ball cage and insert into suction end of body.
Thread bottom bushing into suction end of body utilizing a thread sealant.
Tighten bottom bushing.
Step 3:
Install O-ring and retaining ring into the top seat. Install top seat into
body with a gasket on both sides of seat. Place 3/8” ball and ball check spring
into top bushing. Thread top bushing into body utilizing a thread sealant.
Tighten top bushing.
Step 4:
Install packing with lantern ring in body, ensuring it is installed in the
correct order and orientation.
Note: The “V-Ring” point should be pointing
outward and the lantern ring in line with the grease jack.
Place plunger
packing gland on packing. Loosely thread packing gland nut into the body.
Carefully insert plunger into packing. Install grease jack lubricating assembly
onto pump head.
Step 5:
Install head assembly into housing, ensuring plunger fits into the
crosshead assembly and install drive clip. Install and tighten hex bolts.
Step 6:
Install gasket and cover with wing screws. Install and tighten priming
valve into body utilizing a thread sealant.
Pump Head Disassembly
Step 1:
Disconnect power source, ensure all pressure is removed from pump head assembly and isolate
fluid discharge and suction lines. Open and remove priming valve. Disconnect fluid discharge
and suction lines.
Step 2:
Remove the cover, to get access to and remove drive clip from the crosshead assembly.
BR2400
Electric Drive Chemical Injection Pump
Disconnect power source and ensure pressure is removed from pump head prior to
performing any maintenance. Hazardous pressures can result in serious injury or
property damage.
Maintenance
and Inspection
04-21
