Maintenance - MULTIQUIP MAYCO Series Operation Manual

PREVENTIVE MAINTENANCE
It is extremely important to maintain this pump due to the
highly abrasive nature of concrete material.
1. Inspect all drive components for loose or worn bolts.
2. Drive belt/chain should be checked to remove all slack.
Refer to adjustment procedure.
3. ALWAYS carry extra "O" rings.
4. Keep entire pump clean of concrete to prevent build-up.
5. ALWAYS grease every fitting daily. Use only premium
grade grease.
NOTICE
Over greasing will not damage pump.
GENERAL CLEAN-UP PROCEDURE
1. Ensure that there is no blockage in the hose and line or
in the manifold. If a blockage exists, clear it to ensure
proper operation the next time it is used. At the end
of every pour, or during long delays during a pour, the
pump and delivery system must be thoroughly cleaned
by removing all concrete material.
2. Proper wash out of all materials or build up within
the pump manifold and hoses following the pumping
operation will prevent problems when starting the next
job. After completion of the pour, pump the remaining
concrete in the hopper through the discharge line.
NOTICE
To avoid the possibility of separation during clean-up,
do not pump the concrete below the inlet ball in the
hopper. It is best to leave approximately 3 to 4 inches
of concrete above the inlet ball.
3. Turn the pump engine off before filling the hopper with
water. Engine vibration at idle may "separate" material
in the hopper, causing jamming in manifold when
pumping is resumed.
4. Fill hopper with water and resume pumping. The water
will push the concrete through the line. When the water
runs clear at the end of the hose, disconnect lines and
shake out all the sand and sediment so the lines will
be clean for the next pour.
MAYCO C30HDGA CONCRETE PUMP • OPERATION MANUAL — REV. #1 (09/09/19) — PAGE 31
5. It is important that the hinged discharge cone on the
pump manifold be opened and all remaining concrete
(rock and sand) be thoroughly washed out. This must
be done after each job to prevent concrete build up in
the discharge manifolds and 3" discharge elbow.
SPONGE CLEAN-OUT PROCEDURE
This section will explain the recommended procedure for
using a sponge to clean out the hose lines.
CAUTION
NEVER use muriatic acid to clear the pump. Acid will
dissolve the chrome finish on the pumping cylinder.
NEVER use compressed air to clean out the lines.
When using a clean-out hook to clean out the rear of
the redi-mix truck, use a safety chain to secure the
clean-out hook to some solid part of the redi-mix truck
to prevent the hook from jumping off the redi-mix truck's
hopper. Run the pump at half throttle.
1. After completion of the pour, pump the remaining
concrete in the hopper through the discharge line.
Using a shovel, clean the sides of the hopper.
NOTICE
The pump engine should be turned OFF, as explained
in General Clean Up Procedure.
After the sides of the hopper have been cleaned, add
a small amount of water to the remaining concrete in
the hopper and hand mix.
2. Start the pump engine and pump the hopper all the
way down.
3. Disconnect the hose from the pump. Fill the hopper
with water and pump the remaining concrete out of
the pump.
4. Open the hinged discharge cone and thoroughly wash
out all remaining concrete (sand-sediment) from the
cone and pump manifolds. Close the discharge cone
and lock in place.

MAINTENANCE