Monolithic EHP 2000--Peristaltic
Here! to order the Monolithic EHP 2000 shotcrete pump.
EHP 2000 is designed for use with small aggregate mortars, pastes, heavy
bodied paints, mud, and other thick viscous materials. It works as an
excellent small line shotcrete pump for stuccos and concrete. It is made
from the toughest materials available at an affordable price. The unit
is designed for maximum capacity and minimum maintenance.
Electric Hydraulic Pump
- The electric
motor drives a hydraulic pump which in turn drives a hydraulic motor.
The hydraulic motor drives the carrousel to get the pumping action.
- This pump
has a directional hydraulic valve that will allow the carrousel to turn
either direction. Push IN and go forward. CENTER is neutral.
OUT is reverse. The reverse is on a spring-load and will not
is a needle valve adjustment on the flow of hydraulic oil for speed
control of the pump.
- To remove
or rotate pumping line, remove clamps on lower end of line on peristaltic
hose. Remove peristaltic hose from lower metal fitting with pump in
forward hose can be removed.
Peristaltic Hose Again
the outside of the elbow end at the bottom of the hopper and the inside
of the hose with pump line lubricant or a heavy soap solution. The wetness
and slipperiness will help to force the rubber pumping line over the
the internal pump line and feed it into the carrousel by slowly reversing
the pump. The pumping action in reverse should draw the pump line into
and around the carrousel to the hose connection at the hopper bottom
the pumping line has been slipped over the tube at the elbow, attach
the hose clamp. The pumping line has a soft internal line and because
of this softness, it is virtually impossible to keep the hose from separating
unless the hose clamp and the hopper are connected by an external bolt-on
material line become disconnected from the bottom of the hopper, the bolt-on
clamp will prevent the metal clamp from being pulled into the pump.
Failure to attach the bolt-on clamp will result in damage to the pump
and to the squeeze rollers.
outside of the pumping line with lubricant will greatly speed the installation
of the pumping line into the carrousel. The lubricant will also greatly
reduce the wear and tear on the exterior of the pumping line. Lubricant
can be applied to the pumping line after assembly. Lubricant should be
applied at least once a week.
hose clamp and joining metal strap must be used to prevent the pumping line
and the material line from separating.
the pump line regularly will greatly increase the working life. Rotate
it once a day or after each 10 yards of concrete is pumped.
- The material
line can now be attached to the pumping line.
internal tube with the male quick coupling
connecting strap between the clamp and coupling
Instructions for Shotcreting
pump (do not connect material line to the spray gun):
- Pour water
into the hopper. Turn on the unit by moving the hydraulic valve control
lever to the forward position. After the water is pumped from the hopper,
add mixed material to the hopper. Pump material through the material
line until a uniform consistency of material is flowing. The air line
should be attached to the spray gun. A small amount of air should
always be bleeding through the spray gun air jets to keep the material
from backing up in the air jets.
- The material
is now being pumped into the material line pushing the lubricating water
if front. At the point where the mixed material comes in contact with
the lubricating water, there will be some material separation. Should
a line pack occur, reverse pump to reduce pressure. The line pack will
be where the hose is still hard. Insert a metal rod or a small water
line to break up the pack. It is advisable not to put the spray gun
on the material line until properly mixed material is extruded from
the material line.
- The operator
stops the pump, washes the end of the material line and attaches spray
- Hold spraying
air supply and start pump. You are now spray applying material. Move
the spray in the uniform circular manner to achieve a consistent thickness
- When the
spray man wishes to stop spraying, he should anticipate and stop the
pump. Material will continue to spray for approximately fifteen seconds,
as the pressure of the material in the material line dissipates. If
the spray man is using the Monolithic spray gun, he will be unable to
completely stop the dribbling of material to the spray gun, and should
position the spray gun in a manner that it will not spray an undesirable
area. Reducing the air supply to the spray gun to a minimum will allow
the excess material to dribble from the end of the spray gun. The slight
flow of air to the spray gun will keep material from entering and plugging
the air jets.
clean Wash hopper and spray gun thoroughly. The material
line can be cleaned by pumping sponges and clean water through the pump
and the material line. Sponges should be approximately 3" cube (2" cube
for 1500), and can be easily cut from a cellulose sponge.
Speed of Application
of the carrousel pump is controlled by the hydraulic needle valve located
in tubing line by hydraulic pump. At maximum flow, the free flow rate
is approximately six gallons per minute and will achieve an application
rate in excess of 6 plus cubic yards per hour.
Most of the
problems encountered will be in the mix of the material.
mixing can cause lumping, resulting in plugging at the material hopper.
These plugs are easily and quickly remove by momentarily reversing the
pump. The pump will now pump material backwards and the operator will
be able to remove the lumps from the bottom of the hopper. Use reverse
only momentarily as continued reverse operation will pull the coupling
back into the pump causing damage.
lumps can be caused by exposure to moisture during storage. Over-aged
material will generally result in a lump at the filling spout of the
- The unique
design of the carrousel pump and material line fittings will pass any
smaller lumps directly to the spray gun. Most lumps will pass and be
sprayed on the wall.
operate the carrousel pump in reverse while unattended. Explanation:
The pumping line will double up inside of the pump and cause damage and/or
the coupling between the material in and the pumping line will be pulled
into the pump and cause immediate damage.
carrousel pump has been completely cleaned, apply oil on the outside of
with a sprayer
or a saturated rag. This prevents cement from bonding to the surface of
Only use the Monolithic Internal pump line! This hose is manufactured
specially to Monolithic specifications (Rubber Durometer & Dimensions).
Failure will occur with any other product and warranty will be nullified.
for Removing Internal Carrousel Housing
internal pumping line.
- To remove
hydraulic motor first remove drive chain, then sprocket, then the motor
is ready to be removed. Tools required would be 3/32 inch Allen wrench
for the sprocket and a ¾ inch end wrench for the motor.
- To remove
the carrousel (squeeze roller assembly) you remove the lock collar on
each side bearing with a 3/16 inch Allen wrench, then using a punch
and hammer rotate the collar until it is loose. Next go inside of the
pump and loosen set screws on center shaft. Now the 1¼ inch shaft
is ready to be removed. Be cautious not to damage the end of the shaft
with the hammer. Now that the shaft is out, the carrousel is ready to
- To remove
press rollers, remove two 3/8 inch bolts on the base of each roller
assembly, pull roller and holder from frame. A 9/16 inch wrench is required
for this job.
just go in reverse order.
Handle 3/8" Drive
Extension 3/8" Drive
Deep Socket 3/8" Drive
Deep Socket 3/8" Drive
October 29, 2001
Here! to order the Monolithic EHP2000 shotcrete pump!