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Operating conditions:
1. Ambient temp: Max. + 40
o
2. Liquid Temp: + 4
C (39
o
(104
F) Max.
3. System pressure: Max. 120 psi
4. Relative humidity: Max. 85% (RH)
Electrical connection:
Ensure the mains voltage is the same as
the value shown on the motor plate and that
the pump is safely connected to ground.
Precautions:
1. The pump should be shut down and the
trouble corrected if the pump is running
at speed and found to have any of the
following problems: - No liquid discharged
- not enough liquid discharged – Excessive
vibration – Motor runs hot.
2. Do not allow pump to continually start/
stop (cycling). This will reduce motor life.
3. Cycling can occur on pressure units when
pressure tank pre-charge drops, or when
there is a leak in the discharge plumbing.
4. Pressure tank pre-charge should be
checked at regular intervals of every 3
months and after the pump has not been
used for a prolonged period. To check the
pressure tank air pressure, turn off power,
open a tap on the discharge line to release
pressure from the pump, unscrew the
black plastic cover and apply an accurate
pressure gauge to the valve. Pressure
should be adjusted to the original pre-
charge as follows: TQ400: 21 psi - TQ800:
28 psi
TQ 400/800
Open the cover to adjust the pressure
XV. Pump Manual
Maintenance:
o
o
C (104
F)
Under normal operating conditions, the
o
o
F) ~ + 40
C
pump does not require any maintenance as
long as the following points are observed:
1. Periodically check the condition of
the check valve located under the red
fi ll cap. Remove the prime cover to
check the condition of the check valve.
2. Periodically check the condition of the
pump strainer located on the inlet of the
pump. Remove the two fl ange bolts from the
suction pipe assembly to access the strainer.
3. If the pump sticks after periods of inactivity,
a screwdriver slot is provided on the motor
shaft end to free up the pump/motor. To
do so, insert a screwdriver in the slot in
the motor shaft and turn to free the rotor.
Adjusting pressure switch
A hole has been provided in the plastic cover
corresponding with the pressure switch
bolt location. Insert a small screwdriver
into the hole to adjust the pressure switch.
Make sure the system is primed. The pump
is supplied with a preset pressure in the
pressure switch. In some cases a different
pressure may be required. This can be done
by following the instructions below.
1. If pump does not start when priming faucet
is open, adjust clockwise ("+") until it starts.
2. If pump does not stop when priming faucet
is closed, adjust counter-clockwise ("-") until
it stops.
3. After adjustment is made, open and close
priming faucet several times to make sure
the pump operates normally.
+
-
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