1. INSTALLATION
IOM manual - Sanitary series
12
wear of parts inside of the pump. What is more, when running dry (e.g. during self-priming)
the pump should run at a low speed controlled via a needle valve
.
1.7.3.
Air pressure
The maximum air pressure for Tapflo pumps is 8 bar. Higher air pressure than 8 bar can
damage the pump and may cause injury to personnel in vicinity of the pump. If you intend to
apply a higher air pressure than 8 bar, please consult us.
1.7.4.
Noise level
At tests, the noise level from a Tapflo pump has not exceeded 85 dB(A). Under some
circumstances, for example if the pump is operating under high air pressure at low discharge
head, the noise can be inconvenient or hazardous for personnel staying for long periods in
the vicinity of the pump. This hazard can be prevented by:
➢
using suitable ear protection;
➢
lowering the air pressure and/or raising the discharge head;
➢
leading out the outgoing air from the room by connecting a hose to the muffler
connection of the pump;
➢
using elastomer valve balls (EPDM, NBR or polyurethane) instead of PTFE, ceramic or
stainless steel, provided that the elastomer is compatible with the pumped liquid.
1.7.5.
Temperature hazards
➢
Raised temperature can cause damage on the pump and/or piping and may also be
hazardous for personnel in the vicinity of the pump/piping. Avoid quick temperature
changes and do not exceed the maximum temperature specified when the pump was
ordered. See also general max temperatures based on water in chapter 6.
➢
When the pump is exposed to ambient temperature variations or if there is big difference
between the temperature of the product and the surrounding, the tightening torques of
the housing nuts should be checked periodically as part of preventive maintenance.
Please
contact Tapflo for tightening intervals recommendation.
➢
If a hot product is pumped, the pump should not stand still when filled for a longer period
of time. This could cause leakage from the valves and contamination and/or damage of
the air valve.
➢
Below 0°C (32°F) plastic materials become more fragile what can cause acceler
ated wear
of parts made of these materials. This is a hazard that has to be accepted when pumping
such cold products. Also in such case, when a pump is not operational it should be drained
of all liquid.
➢
Bear in mind that the viscosity of the product changes with temperature. This has to be
taken into consideration when selecting the pump.
1.8.
Air connection
Screw the air hose into the air intake on the centre block of the pump with for example a
bayonet coupling. For best efficiency, use the same hose diameter as the internal diameter of
the connection on the air intake.
