14
308149
Operation
(HYDRAULIC-POWERED MODELS)
Starting and Adjusting the Pump
Supply fluid to the pump, per the requirements of your
system.
Refer to Fig. 4 on page 10. Check the hydraulic fluid
level before each use, and add fluid as necessary.
Make certain that the supply line shutoff valve (U) and
the return line shutoff valve (V) are closed, then start
the hydraulic power supply.
Hold a metal part of the gun/valve (S) firmly to the side
of a grounded metal pail and hold the trigger open.
Open the return line shutoff valve (V)
first,
then slowly
open the supply line shutoff valve (U).
Cycle the pump slowly until all the air is pushed out
and the pump and hoses are fully primed. Release the
spray gun/dispensing valve trigger and engage the
trigger safety. The pump should stall against pressure
when the trigger is released.
If the pump fails to prime properly, open the bleeder
valve (35) slightly. Use the bleed hole on the underside
of the valve body (34) as a priming valve until the fluid
appears at the hole. See Fig. 10. Close the plug (35).
NOTE:
When changing fluid containers with the hose
and gun already primed, open the bleeder valve plug
(35), to assist in priming the pump and venting air
before it enters the hose. Close the bleeder valve
when all air has been eliminated.
WARNING
To reduce the risk of fluid injection, do not use your
hand or fingers to cover the bleed hole when
priming the pump.
With the pump and lines primed, and with adequate
hydraulic volume supplied, the pump will start and stop
as the gun/valve is opened and closed. In a circulating
system, the pump will speed up or slow down on
demand, until the hydraulic power supply is shut off.
Use the fluid pressure gauge (F) and flow control valve
(G) to control the pump speed and the fluid outlet
pressure. Always use the lowest hydraulic flow and
pressure necessary to get the desired results. Higher
pressures cause premature tip/nozzle and pump wear.
WARNING
To reduce the risk of overpressurizing your system,
which could result in component rupture and cause
serious injury, never exceed 10 MPa, 103 bar
(1500 psi) Maximum Hydraulic Input Pressure to
the pump or 15.9 MPa, 159 bar (2300 psi) Maxi-
mum Fluid Working Pressure (see the
Technical
Data
on page 35).
To prevent overpressurizing the hydraulic motor or
its seals, always shut off the supply line valve (U)
first, then shut off the return line valve (V).
CAUTION
Do not allow the hydraulic oil temperature to exceed
54
C (130
F). The pump seals will wear faster and
leakage may occur if the pump is operated at higher
oil temperatures.
Never allow the pump to run dry of the fluid being
pumped. A dry pump will quickly accelerate to a high
speed, possibly damaging itself. If your pump acceler-
ates quickly, or is running too fast, stop it immediately
and check the fluid supply. If the supply container is
empty and air has been pumped into the lines, refill the
container and prime the pump and the lines with fluid,
or flush and leave it filled with a compatible solvent. Be
sure to eliminate all air from the fluid system.
Shutdown and Care of the Pump
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 12.
For overnight shutdown,
relieve the pressure
. Stop
the pump at the bottom of the stroke to prevent fluid
from drying on the exposed displacement rod and
damaging the throat packings.
Always flush the pump before the fluid dries on the
displacement rod. Never leave water or water-based
fluid in the pump overnight. First, flush with water or a
compatible solvent, then with mineral spirits. Relieve
the pressure, but leave the mineral spirits in the pump
to protect the parts from corrosion.
Summary of Contents for Check-Mate 2100 A Series
Page 6: ...6 308149 Notes...
