Parker CDAS HL 050 - Dryer Securing and Exhaust Silencer Attachment; Setting the Purge Air Volume

21
Medium Flow Compressed Air Dryers - IOMI.
1
2
3
REF DESCRIPTION
1 M15 xing bolts (not supplied)
2 Exhaust Silencer
3 Adjustable Purge Dial
Securing the Dryer
Mounting holes are provided in the feet of the dryer. Once the
dryer has been positioned in its nal location ensure that it is
securely xed in place using M15 xing bolts.
Attach the Exhaust Silencer
e dryer is supplied with an exhaust silencer. If the dryer is to be
located in a noise sensitive area, exhaust air can also be remotely
piped away. If the exhaust is to be piped away then a minimum
pipe size of 50mm (2 ins) should be used initially, expanding to
larger diameter the longer the piping run becomes. As a rule of
thumb a minimum bend radius of four times the radius of the
pipe should be employed. Failure to pipe away correctly results
in back pressure (indicated by a minimal pressure on the o-line
pressure gauge) which prevents full regeneration of the o-line
bed and results in loss of dewpoint.
Setting the Purge Air Volume
e volume of purge air required by the dryer must be set up
during commissioning and is based upon the minimum pressure
into the dryer during operation.
Purge Air Volume Setting Procedure
Before setting the purge air volume, fully close the Adjustable
Purge Valve (ref 3 on diagram right) and ensure that the
screwdriver slot is aligned with the number 12 on the purge dial.
Setting the purge air volume requires turning of the adjusting
screw a number of full turns from fully closed, then ne tuning
with partial turns to a numbered position on the dial.
Obtain the minimum operating pressure at the dryer inlet and
use the table below to identify the number of full turns and
partial turns required.
Important Note:
Failure to correctly set purge during commissioning will seriously aect dryer performance (outlet dewpoint & operational costs) and
will invalidate warranty.
PRESSURE (Bar g)
CDAS
OFAS
FBP
PURGE FLOW
DIAL
SETTING
4 5 6 7 8 9 10 11 12 13 14 15 16
(m
3
/hr) (L/m)
HL 050 11 183
Full Turns 6 5 5 4 4 4 3 3 3 3 3 3 3
+ Dial No. 6 10 1.5 8.5 4.5 1.5 11.5 9.5 7.5 5.5 4.5 3.5 2.5
HL 055 14 233
Full Turns 6 6 6 5 5 4 4 4 4 3 3 3 3
+ Dial No. 11 7.5 1.5 7 2 10 6.5 4 1 11 9.5 8 7
HL 060 18 300
Full Turns 7 7 6 6 6 5 5 5 4 4 4 4 4
+ Dial No. 4.5 0 9 6 2 8.5 4.5 0.5 9 6.5 4.5 2.5 1.5
HL 065 22 367
Full Turns 7 7 7 6 6 6 6 5 5 5 4 4 4
+ Dial No. 8.5 4.5 1.5 10.5 8 5.5 2 9.5 5 2 11 8.5 7
HL 070 30 500
Full Turns 8 7 7 7 7 7 6 6 6 6 6 5 5
+ Dial No. 4 11.5 8 5 2 0 10 8.5 7 5 1.5 10 8
HL 075 37 617
Full Turns 8 8 8 7 7 7 7 7 6 6 6 6 6
+ Dial No. 9.5 4 0.5 9.5 7 4.5 3 1 11 9.5 8 7 5
HL 080 44 733
Full Turns 9 8 8 8 7 7 7 7 7 7 7 6 6
+ Dial No. 3 9 4.5 1.5 10.5 8 6 4.5 3 1.5 0 10.5 9
HL 085 60 1000
Full Turns 10 9 9 8 8 8 8 7 7 7 7 7 7
+ Dial No. 3 7 2 9 6 3 1 11 9 7.5 6.5 5 3.5