Homa CTP 50, Original Instruction Manual, Page: 32 / 72

32 | ENGLISH
4. Package, Transport, Storage
4.1. Delivery
On arrival, the delivered items must be inspected for dam-
age and a check made that all parts are present. If any
parts are damaged or missing, the transport company or
the manufacturer must be informed on the day of delivery.
Any claim made at a later date will be deemed invalid.
Damage to parts must be noted on the delivery or freight
documentation.
4.2. Transport
Only the appropriate and approved fastening devices,
transportation means and lifting equipment may be used.
These must have sufficient load bearing capacity to en-
sure that the product can be transported safety. If chains
are used they must be secured against slipping.
The personnel must be qualified for the tasks and must
follow all applicable national safety regulations during the
work.
The product is delivered by the manufacturer/shipping
agency in suitable packaging. This normally precludes the
possibility of damage occurring during transport and stor-
age. The packaging should be stored in a safe place if the
location used is changed frequently.
4.3. Storage
Newly supplied products are prepared that they can be
stored for 1 year. The product should be cleaned thorough-
ly before interim storage.
The following should be taken into consideration for
storage:
• Place the product on a firm surface and secure it
against falling over. Submersible mixers and aux-
iliary lifting devices should be stored horizontally,
submersible sewage pumps and submersible motor
pumps should be stored horizontally or vertically. It
should be ensured that they cannot bend if stored
horizontally.
Danger from falling over!
Never put down the product unsecured. If the
product falls over, injury can occur!
• The product has to be stored at a place free from vi-
brations and agitation to avoid damage from the ball
bearings.
• It is also necessary to pay attention to the storage.
The device should be stored in dry rooms without
temperature fluctuation.
• The product may not be stored in rooms where weld-
ing work is conducted as the resulting gases and ra-
diation can damage the elastomer parts and coatings.
• It is responsible to take care that the corrosion coat-
ing will not be spoiled
• Any suction or pressure connections on products
should be closed tightly before storage to prevent
impurities.
• The power supply cables should be protected against
kinking, damage and moisture.
3.3.5. Pump housing
The pump housing, depending on the model, is supplied
with different connections. This means that the machine
can be connected with the respective pipe system. The
pump housing is also available rubber-coated inside. Some
pump housings are supplied with a cleaning hole lid to
eliminate blockages.
The pump can equipped with a stationary wear ring which
can be found in the intake port. This wear ring determines
the gap between the impeller and the intake port. If this
gap is too big, the performance of the pump decreases
and it can lead to blockages. The rings can be changed to
minimize wear and expenses for spare parts.
3.3.6. Impeller
The impeller is fastened directly to the motor shaft and
driven by it. The impeller is available in VA and available in
the following design:
M: Enclosed single channel impeller, for liquids containing
impurities and sludge with solid particles or long fibres.
Beware of rotating impeller!
The moving impeller can crush and sever limbs.
Never reach into the pump unit or the moving parts
during operation. Switch off the machine and let the
moving parts come to a rest before maintenance or
repair work!
In addition, it is possible to check the direction of rotation
with a “motor and phase rotation indicator”. This measur-
ing device is held externally against the motor housing
of the switched-on pump and indicates by an LED the
direction of rotation.
Seal monitoring for pumps with oil chamber:
Version without cooling jacket or “U” version with cooling
jacket and open cooling circuit:
If the shaft seal on the medium side leaks, water enters
the oil chamber and changes the resistance of the oil. The
conductivity of the oil added is monitored via 2 sensors.
The sensors should be connected via 2 wires (designated
S1 and S2) from the pump connecting cable in the con-
trol system to an evaluation unit with electrically isolat-
ed probe circuit. With the version for use in areas with a
potentially explosive atmosphere, select an electrode re-
lay with intrinsically safe circuit. The response sensitivity
should be adjustable from 0-100 kΩ; standard setting 50
kΩ. Appropriate relays can be purchased from HOMA.
Motor cooling
For dry installation or submerged operation with jacket
cooling through the conveying medium.
3.3.4. Sealing
The sealing is carried out by means of two independent-
ly acting mechanical seals made of silicon carbide. The
seal housing is located between the motor and the pump
housing. It consists of the bearing housing and the pres-
sure cap, which together form the sealing space filled
with medical white oil. The inspection screw on the bear-
ing housing and optional electronic monitoring provide
control.