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MAINTENANCE
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.
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 Teflon or graphite based packing
lubricant.
BR5100
Pneumatically Operated Chemical Injection Pump
Step 2: Install O-ring into bottom seat. Place 3/8" ball into bottom seat
(install metal gasket on seats for 3/16" plunger size) and thread bottom seat
into suction end of body utilizing a thread sealant. Tighten bottom seat.
Step 3: Install the 1/4" ball into the discharge end body for plunger sizes 1/4"
to 1/2". Install O-ring into top seat. Insert top seat into body. 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 into body, ensuring it is installed in correct order and
orientation. Note: The "V-Ring" point should be pointing outward.
Install plunger packing gland onto the packing and insert the plunger into the
packing. Thread yoke nut onto the body.
Step 5: Thread body into housing, ensuring plunger fits through the plunger
packing gland nut and into the rod adapter. Note: The adjusting pin can be
temporarily removed to allow the rod adapter to extend and rotate to align
pin holes. Install plunger pin. Snugly tighten the plunger packing gland nut
onto body, do not over tighten gland nut.
Step 6: Tighten lock nut. Install gasket and cover with wing screws. Install
and tighten priming valve into head body. Note: 3/16" plunger size head
needs a 1/4" ball inserted into priming valve hole before installing priming
valve.
0
Maintenance
and Inspection
12-19
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Summary of Contents for Bruin Pumps BR5100
- Page 1 Maintenance and Inspection BR5100 Pneumatically Operated Chemical Injection Pump MAINTENANCE 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. Pump Head Maintenance Pump Head Assembly Step 1: Ensure all parts are clean and free from damage (see Inspection section).
- Page 2 Pump Head Disassembly Step 1: Disconnect operating air supply and 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 cover and gasket by loosening and removing wing screws. Step 3: Remove plunger pin and unthread plunger packing gland nut.
- Page 3 Step 7: Position switching arm on correct side of micro switch arm so that setscrew is positioned in the groove of the thrust rod. Tighten the set screw to lock it into place with the arm in a vertical position. Step 8: To configure adjustment switch arm, move micro switch arm manually so that it is furthest away from the main switching arm rod.
- Page 4 Step 3: Connect mounting plate and gasket to housing with cap screws and lock washers ensuring micro switch arm extends between the switch arms. Connect line assembly between micro switch connector and housing connector. Micro Switch Disassembly Step 1: Disconnect operating air supply. Loosen and disconnect micro switch line assembly. Step 2: Remove cap screws and lock washers.
- Page 5 Step 6: Install line assembly to tube connectors. Install drain plug, utilizing a thread sealant and fill main cavity to bottom of thrust rod with SAE 30 non- detergent oil (ISO 100 and AGMA 3 are equivalents). Note: Use SAE 10W oil (ISO 32 and AGMA 0 are equivalents) for low ambient temperatures.
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