Operation
Pressure Relief Procedure
WARNING
PRESSURIZED EQUIPMENT HAZARD
The system pressure must be manually relieved to
prevent the system from starting or spraying acci-
dentally. To reduce the risk of an injury from acci-
dental spray from the dispense valve, splashing
fluid, or moving parts, follow the Pressure Relief
Procedure whenever you:
D
are instructed to relieve the pressure,
D
stop dispensing,
D
check or service any of the system equipment,
D
or install or clean the dispense valve nozzle.
1.
Shut off the air supply to the pump.
2.
Close the bleed-type master air valve (required in
system).
3.
Open the fluid ball valve and/or dispensing valve to
relieve fluid pressure.
NOTE: The sanitary pump was assembled using
sanitary lubricant on moving parts and was tested in
water. Flush the pump thoroughly with an approved
cleaning solution or disassemble and sanitize the parts
before using the pump. Refer to the Cleaning Proce-
dure on page 7. Check local and state codes for
specific limitations.
Adjusting the Pump Speed and Pressure
WARNING
COMPONENT RUPTURE HAZARD
To reduce the risk of component rupture,
which could cause serious injury,
never
exceed 120 psi (8 bar) air supply pres-
sure to the pump. Read the warning section
EQUIPMENT MISUSE HAZARD.
Open the bleed-type master air valve (D). Adjust the
pump air regulator (C) until the pump is running
smoothly.
Allow the pump to cycle slowly until all air is pushed
out of the lines (the fluid will be flowing in a steady
stream from the fluid outlet) and the pump is primed.
With the air supply turned on, the pump will start when
the dispensing valve is opened, and stall against
pressure when the valve is closed. In a circulating
system, the pump operates until the air supply is
turned off.
Pump Shutdown
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.
To shut off the pump, relieve the pressure.
Care of the Pump
CAUTION
Do not expose the air motor to temperatures higher
than 200
_
F (93
_
C) or the immersed fluid pump to
temperatures higher than 250
_
F (121
_
C). Excessive
temperatures may damage the pump packings and
seals.
If the pump accelerates quickly, or is running too fast,
stop the pump immediately and check the fluid supply.
If the supply is empty and air has been pumped into
the lines, refill the container and prime the pump and
lines with fluid. Be sure to eliminate all air from the
system.
CAUTION
Never allow the pump to run dry of fluid. A dry pump
will accelerate to a high speed, possibly damaging
itself.
Always stop the pump at the bottom of its stroke to
prevent fluid from drying on the displacement rod (the
air motor will exhaust at the bottom of the stroke).
Summary of Contents for Monark 207550
Page 8: ...8 307056K Notes...
