SPP Pumps Auto Prime Q Series - QI200 User Manual
Page 14
Manual No/Rev
W72-008E / 9
Operators Instructions for
AUTOPRIME Q Range Pump Unit
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 14 of 18
The priming system electrical circuit is
protected by a circuit breaker mounted on
the control panel. If this trips out, push the
central button to reset. If the breaker will not
reset or is constantly tripped then there is an
electrical fault.
The electrical supply to the clutch is
controlled by the level sensing probes, via a
timer. If there is no electrical supply to the
clutch, check that the power light is
illuminated on the priming control box. If this
is on then disconnect the clutch and check if
there is 12 Volts across the wires. If there is
then the clutch has failed and should be
replaced.
If the 12 Volt supply is not provided to the
clutch, check the continuity of the cables and
rectify any bad connections.
If the control box does not provide the 12
Volt supply for the clutch the control box is
faulty and must be replaced.
8.4
Check the solenoid valve
The electrically operated solenoid valve is
connected to the top of the priming tank. The
valve is reliable but If a fault is suspected it is
most likely to be a problem with the wiring.
Wire No 28 of the loom supplies 12 Volts,
wire No 8 is an earth return.
8.5
Priming filter blockage.
The priming tank air filter is mounted in the
top of the priming tank. To remove and
check the filter condition, follow the
instruction given in the maintenance section
of this manual.
8.6
Priming tank knitmesh filter blocked
It is extremely unlikely that the priming tank
knitmesh filter will ever become sufficiently
blocked to prevent priming. Instructions for
dismantling the unit and removing and
cleaning the knitmesh filter are given in the
maintenance section of this manual.
8.7
Volute non return valve not sealing
The volute non-return valve needs to seal if
the priming system is to function. The non-
return valve can be examined by removing
the discharge quick release coupling - see
the relevant section of the maintenance
instructions. Ensure that there is nothing
jammed under the valve especially at the
back around the valve hinge.
8.8
Air leak in priming system
It is extremely unlikely that there will be air
leaks at any of the priming system sealing
faces. Leaks may occur if the suction quick
release fitting has been moved or the
priming tank has recently been dismantled. If
the vacuum pump is working but not
achieving full vacuum fit a quick release
connection cap and gauge to the suction
pipe. Run the unit to achieve a vacuum, as
indicated by the gauge, then turn the unit off.
Note how long the vacuum takes to decay.
A pump in full working order will achieve a
vacuum of 9 metres water and hold it for in
excess of five minutes.
8.9
Vacuum pump
If the vacuum pump is considered to be at
fault no attempt should be made to
dismantle it. Obtain a replacement unit.
To check the operation of the vacuum pump,
disconnect the pipe running between the
priming tank and the vacuum pump.
Warning:- The pipe is stiff and very difficult
to remove. Do not disconnect the pipe while
the unit is running. If any solid objects, grit or
mud are drawn up the pipe they will cause
serious damage to the internals of the
vacuum pump. Disconnection of this pipe
should only be considered as a last resort.
Conduct other investigations before resorting
to this course of action.
Once the pipe between the vacuum pump
and the coalescer has been disconnected
start up the unit and place a small clean
board over the inlet to the vacuum pump.
The board should be held in place by the
action of the vacuum pump. Turn the unit off
before refitting the pipe.
The oil in the coalescer is used to both
lubricate the vacuum pump and create an
effective seal. If the vacuum pump
performance is poor check the coalescer oil
level, after having drained any excess water.
8.10 Fault Finding Guide
Unit does not start
•
Fuel consumed.
•
Trip switches need resetting.
•
Warning lights on & shutdown circuit
activated.
•
Battery with low charge level.
•
Refer to engine supplier’s manual for
engine checks.