NaceCare Solutions SNTD750 User Manual

NUMATIC - NVD 750F / SNTD 750

NOTE: As with all electrical equipment, care and attention must be exercised at all

times during its use, in addition to ensuring that routine and preventative maintenance is
carried out periodically in order to ensure its safe operation. In particular the electrical
supply cable and flexible hose should be regularly inspected by a competent person
and immediate action taken to rectify any faults found. Failure to carry out maintenance
as necessary, including replacement of parts to the correct standard, could render the
equipment unsafe and the manufacturer can accept no responsibility in this respect.
See the enclosed exploded drawings for correct replacement parts.

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MACHINE COMPONENTS

Powerhead

The 2 bypass vacuum motors are housed within the epoxy coated steel head. To start
the vacuum, there is 1 switch mounted on the front of the handle assembly. The
powerhead is removed by lifting up on the 2 steel toggles and releasing the claws from
the rim of the powerhead.

The exhaust port of the vacuum is equipped with a screw on diffuser to divert the
exhaust airflow. This may be removed if required. Also it is possible to fit an exhaust
hose to divert the processed vacuum air to another area. For this it is recommended to
use the shortest 2" Numatic hose possible, and to increase the diameter to proprietary
exhaust hose as soon as possible to reduce back pressure.

Standard Dry Filters

The NVD 750F (SNTD 750) is normally equipped with a 2 stage main filter assembly
immediately underneath the powerhead. This consists of a red Filtrex filter providing

5.0 micron filtration and a white Permatex 0.5 micron filter.
If higher filtration levels are required, it is possible to install a 2 stage Permatex (NVM

13B) / Microtex (NVM 10C) assembly instead of the standard filters. This increases the
filtration to 0.3 microns with an efficiency in excess of 99%.

As the standard become loaded with dirt & debris during use, they should be removed
periodically and brushed to remove the gross soil. Both stndard filters can be washed in
mild detergent & hung to dry. Do NOT wash the Microtex filter if this is installed in the
machine. The Microtex filter is easily identified by its bright yellow colour. It also has a
warning tag indicating that it should not be washed.

Optional HEPA Filter Module

As an optional accessory, the NVD 750F (SNTD 750) may be fitted with a HEPA filter
module. When this filter is used it must always be used with a Permatex filter as a pre­filter. Failure to do so will drastically reduce the working life of the HEPA filter.

As a safety precaution in sensitive areas, it is possible to secure the HEPA filter module
to the powerhead by using split pins. These can be inserted through the holes in the
steel retaining toggles once they are closed.

The HEPA filter is capable of filtration to 99.97% to 0.3 microns even if the intake of the
machine is completely blocked.

The code for the replacement filter is NVM 25B. Replacement of the HEPA filter must
be carried out by qualified personnel.

Special Cyclonic Assembly

Below the main filter assembly is the special cyclonic assembly. The intake, to which
the vacuum hose is attached, is mounted so that debris enters in a tangential fashion to
enable "cyclonic" separation of dusts from the airstream.

To remove the cyclonic assembly it is necessary to first remove the transfer hose
screwed onto the rear of the assembly. Then lift up on the 2 steel toggles and release
the claws from the rim of the assembly.

Collection Filters

The standard filter supplied with the machine is a deep Permatex filter. In addition to
this the recovery tank is lined with an open paper bag (type-NVM 5B). It is also possible
to use the Permatex filter as a liner with the open paper bag as the main collection filter.

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