46
METERING PUMP LINE
WARNING! Before performing any maintenance,
make sure the Main Power Switch is OFF and
incoming power is locked OFF. Allow material
temperature to cool below 80
F (27
C) and
bleed all material pressure to zero.
Weekly: When the Proportioning Pumps are functioning properly it is not
unusual for a small amount of Poly (R) material to appear on the Pump
Shaft. This material should be wiped away so dirt does not accumulate on
the Pump Shaft and the Pump Shaft Packings are not damaged.
Yearly or as required: Assuming the Iso (A) and Poly (R) is free from contaminates, the
maintenance of the Iso Lube Reservoir (page 44) is performed, and the maintenance of the Poly
(R) Pump Shaft (above) is followed, the Proportioning Pumps will perform for many
maintenance free cycles. However, it is not unusual for those who use the PH Series
Proportioner on a regular basis to rebuild the Proportioning Pumps on a yearly basis and
service the Hydraulic Drive System at the same time, when the Proportioner is out of service.
Pump Base Service
To service Discharge/Inlet Ball:
1. CLOSE appropriate Proportioner Inlet Material Supply Valve and remove Air Line from
Transfer Pump.
2. Ensure all material pressure in the Proportioner system is zero and remove appropriate
Retainer Nut.
3. For Inlet Ball:
a. Remove Inlet Ball with a Magnet (DO NOT USE ANY SHARP OBJECTS), clean
Ball and Ball Seat, and inspect for foreign material and any flat spots on Ball.
b. Using supplied Ball Seat Tool (TL-02), check for proper Ball Seat/Ball Seat
Gasket compression. Snug Seat up to ¼ turn maximum 110 ft-lbs (149 N-m).
4. For Discharge Ball:
a. Perform steps 1 & 2 from above.
b. Remove Cage and Spring.
c. Remove Discharge Ball with a Magnet, clean Ball and Ball Seat, and inspect for
foreign material and any flat spots on Ball.
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