Castex PX-1500HPH Operator And Parts Manual page 9

WEEKLY MAINTENANCE
1. Remove and soak spray tips in a tannin solution.
ATTENTION: Do not use pins, paper clips, etc., to
unplug spray tips. This will damage spray tips.
2. Flush pump system: Use a tannin solution to
dissolve normal alkaline chemical buildup. Follow
steps below:
FOR SAFETY: When using machine, follow mixing
and handling instructions on chemical containers.
a. Mix 500 ml (16 oz) of tannin solution with 7.6 L
(2 gal) of hot water 60
inside solution tank.
b. Place a bucket under spray jets to catch
spray.
c. Turn on "PUMP" switch.
d. Squeeze trigger on tool for 30 seconds.
e. Allow solution to remain in system for up to 6
hours in above freezing temperatures.
f. Later, spray out tannin solution into a drain.
Then run 11.4 L (3 gal) of clean water through
system to flush out impurities.
3. Check floor tool for loose shoes. If loose, tap with
rubber mallet.
4. Inspect vacuum hose for holes and loose cuffs.
5. Grease pump: Solution pump must be greased
every 40 hours of operation or monthly, whichever
comes first. Refer to hour meter located below
handle of machine to help you determine when
greasing is necessary. Each new machine is
supplied with a grease gun. (Grease Gun Part No.
190022).
a. To grease pump, release latches on front of
machine and lift tank to access pump.
b. Remove safety cover by pinching tabs and
pulling straight off. You will also need to
remove black plug from front of chassis.
c. Insert grease gun through plug hole (front of
chassis) and onto grease fitting, pump plunger
at most 1 to 2 times. Gun only pumps grease
at last 19 mm (0.75 in) of plunger travel. Be
sure to push plunger all the way down! Do this
slowly to allow grease to enter bearing
(Figure 14).
ATTENTION: Overgreasing pump will damage
seals.
ATTENTION: Do not use an air powered or hand
lever grease gun, they will damage pump.
PX-1500HPH (11–99)
o o
C (140 F) maximum
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FIG. 14
d. With a screwdriver, apply a generous dab of
grease to outer diameter of cam bearing at top
and bottom where bearing contacts
connecting rod.
e. Replace grease cover and black plug.
f. Check pump periodically and scrape out (do not
wash out) any excess grease from pump cavity.
MONTHLY MAINTENANCE
1. Inspect cord grips for damage. Replace if
damaged. Neatly coil cords after each use.
2. Inspect tank for cracks.
3. Lubricate casters with a water resistant grease.
EVERY 250 HOURS OF OPERATION
Check vacuum motor for carbon brush wear. Replace
brushes when worn to a length of 10 mm (0.38 in) or
less.
OPERATION
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