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1. Installation
Th e HDF, who's discharge capacity is as in Fig. 1, is
installed as follows:
Note: Before connecting the drain, blow compressed
air through the piping in order to thoroughly clean
out any impurities within it.
• Install the drain at a level below the receiver (Fig. 3);
if not the receiver will fi ll up with condensate (Fig. 4).
• To allow air equalization, install one of the follow-
ing:
a) the connection nipple, if supplied (with balancing
pipe), which must be connected between the drain
and receiver without any extra pipe or fi lter (Fig. 5).
b) a ¼" tube between the drain and the receiver (Fig.
6 - coupling for receiver available on request) or the
receiver's air outlet tube.
Discharge can be 'free orifi ce' or using a tube, also
above the drain (Fig. 7).
Pos.
HDF120
(Fig.8)
HDF120-A
HDF120NPT-A
1
398H324543 -
2
398H324544 -
3
4
5
6
7
8
9
10
English
Code
HDF180
HDF180-A
HDF180NPT-A
-
398H324559 -
BSPT
BSPT
398H324560 -
NPT
NPT
398H473377
Spares Kit
HDF
2. Maintenance
Weekly: open and close the drain valve as shown in
Fig. 5 and let air blow through for a few minutes.
If a signifi cant amount of water (more than 0.5 litres)
exits the valve during this operation then the drain
must be thoroughly cleaned as below.
Yearly: Dismantle the drain (Fig. 8) and clean all
components, especially '4'.
N.B.: Also perform this operation both 1 and 3 weeks
aft er installation.
Note: Th e drain's seal (10 - Fig. 8) can be simply
inverted when one side becomes worn.
Description
complete drain casing
connection nipple
(HDF120-A, HDF120/NPT-A,
HDF180-A, HDF180/NPT-A only)
body gasket
fl oat + lever
manual discharge valve + O-ring
external pressure equalizing plug
nuts + screws M 6X35
O-ring OR 108
screws M 5X12
120 -
180
HDF
seal
Installed
quantity
1
1
1
1
1
1
4
1
2
1
2
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