PMC MN-06001, Manual

Page: 37 / 66

PMCA-20
Manual
37
more than 20% of the Screen surface is obstructed by residue.
5. Reinstall the Screen, Spring and Seal. Screw on the Strainer Screw and screw in Plug.
6.
OPEN the Poly “R” Proportioner Inlet Valve, pressurize the Material Transfer Pump,
check for leaks.
7.
Repeat above for the Iso “A” side.
8. Proceed with Proportioner Purging operation (page 18).
Iso Pump Lube System
Daily: Check the condition of the PMC Lube Oil in the Iso
Lube Reservoir. Replace the PMC Lube Oil if you see
significant changes in the color or signs of solidification.
Ensure inside of Reservoir is wiped clean.
To replace the Lube Oil, proceed as follows:
1. Remove the Lube Reservoir from its support, unscrew
the Lid and remove the Check Valve from the Suction
Hose.
2. Empty the contaminated Lube Oil in a waste container
and refit the Check Valve in the Suction Hose.
3. Clean the Reservoir, refill with Lube Oil, and screw on the Lid and place the Reservoir
in its support.
The system is auto-suction and does not need priming when using size 60 pumps.
When using size 40 pumps priming may be necessary.
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 and bleed all material pressure to zero.
Weekly: When the Proportioning Pumps are functioning properly it is
not unusual to a small amount of Poly
“R” material to appear on the
Pump Shaft. This material should be wiped away so dirt does no
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 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 unusually for those who use the PMCA Series Proportioner on
a regular basis to rebuild the Proportioning Pumps on a yearly basis when the Proportioner is
out of service.