Parker PNEUDRI domnick hunter MAXI PLUS MPXS Series User manual

Maxi Plus
MPXE & MPXS 106 - 112
Original Language
User Guide
aerospace
climate control
electromechanical
filtration
fluid & gas handling
hydraulics
pneumatics
process control
sealing & shielding
EN
NL DE FR FI SV NO DA EL ES PT IT
PL SK CS ET HU LV LT RU SL TR MT

PNEUDRI MAXI
Installation & Maintenance Instructions
MODELS MPXE/MPXS
INDEX PAGE NO.
1 SAFETY WARNING 6
2 TECHNICAL SPECIFICATIONS A) GENERAL 7
B) DIMENSIONS 8
3 UNPACKING 9 - 10
4 INSTALLATION A) INSTALLATION CHECKLIST 11 - 12
B) POSITIONING YOUR SYSTEM 13
C) INSTALLING YOUR SYSTEM PNEUMATICALLY 14 - 15
D) INSTALLING YOUR SYSTEM ELECTRICALLY 16
i) MPXE MODELS 16
ii) MPXS MODELS 17
iii) MPXE REAR JUNCTION BOX 18
5 COMMISSIONING 19
6 MAINTENANCE A) MAINTENANCE PRECAUTIONS 19
B) ROUTINE MAINTENANCE 19
C) MAINTENANCE EXAMINATION 20
D) MAINTENANCE PLANS 20
E) DESICCANT SAFETY INFORMATION 20 - 21
F) KNOWN MISUSE 22 - 24
7 WARRANTY 27
8 DECLARATION OF CONFORMITY Inside Rear Cover
APPENDIX A 25 - 26
MAINTENANCE & EXAMINATION RECORD
FIGURES 1 PNEUDRI INSTALLED AFTER ‘WET” AIR RECEIVER 13
2 TYPICAL SINGLE BANK INSTALLATION 14
3 TRANSFORMER ENCLOSURE - DXE MODELS 16
4 CONTROL ENCLOSURE - MPXS MODELS 16
INDEX
1

2
PNEUDRI MAXI
Inbetriebnahme und Wartung
MODELLE MPXE/MPXS
INHALT SEITE
1 SICHERHEITSHINWEISE 28
2 TECHNISCHE DATEN A) ALLGEMEINES 29
B) ABMESSUNGEN 30
3 AUSPACKEN DES SYSTEMS 31 - 32
4 INSTALLATION A) CHECKLISTE 33 - 34
B) AUFSTELLEN DES SYSTEMS 35
C) PNEUMATISCHE INSTALLATION IHRES SYSTEMS 36 - 37
D) ELEKTRISCHE INSTALLATION IHRES SYSTEMS 38
i) MPXE-MODELLE 39
ii) MPXS-MODELLE 39
iii) MPXE RÜCKSEITIGE ANSCHLUSSBOX 40
5 INBETRIEBNAHME 41
6 WARTUNG A) VORSICHTSMASSNAHMEN BEI DER WARTUNG 41
B) ROUTINEMÄSSIGE WARTUNG 41
C) ÜBERPRÜFUNG DER WARTUNGSMASSNAHMEN 42
D) WARTUNGSPLÄNE 42
E) SICHERHEITSINFORMATIONEN ZUM TROCKENMITTEL 42 - 43
F) ANWENDUNGSFEHLER 44 - 56
7 GEWÄHRLEISTUNG 49
8 KONFORMITÄTSBESCHEINIGUNG Hintere Umschlaginnenseite
ANHANG A 47 - 48
WARTUNGS- UND UNTERSUCHUNGSPROTOKOLL
ABBILDUNGEN 1 INSTALLATION DES PNEUDRI NACH DEM
FEUCHTLUFTBEHÄLTER 35
2 TYPISCHE ANORDNUNG MIT EINER FILTERBANK 35
3 TRANSFORMATORGEHÄUSE - MPXE-MODELLE 38
4 STEUERUNGSGEHÄUSE - MPXS-MODELLE 39
INHALT

3
PNEUDRI MAXI
Instructions pour l’installation et l’entretien
MODELES MPXE/MPXS
TABLE DES MATIERES NO. PAGE
1 AVERTISSEMENTS CONCERNANT LA SECURITE 50
2 CARACTERISTIQUES TECHNIQUES A) GENERALES 51
B) DIMENSIONS 52
3 RETRAIT DE L’EMBALLAGE 37 - 54
4 INSTALLATION A) LISTE DE CONTROLE D’INSTALLATION 55 - 56
B) IMPLANTATION 57
C) INSTALLATION PNEUMATIQUE DE VOTRE SYSTEME 58 - 59
D) INSTALLATION ELECTRIQUE DE VOTRE SYSTEME 60
i) MODELES MPXE 60
ii) MODELES MPXS 61
iii) BOITE DE JONCTION ARRIERE MPXE 62
5 MISE EN ROUTE 63
6 ENTRETIEN A) PRECAUTIONS A L’ENTRETIEN 63
B) ENTRETIEN REGULIER 63
C) EXAMEN A L’ENTRETIEN 64
D) PROGRAMMES D’ENTRETIEN 64
E) FICHE DE SECURITE CONCERNANT LE DESSICCANT 64 - 65
F) ERREURS LES PLUS COURANTES 66 - 68
7 GARANTIE 71
8 DECLARATION DE CONFORMITE Dos de couverture
ANNEXE A 69 - 70
FICHE D’ENTRETIEN ET D’EXAMEN
FIGURES 1 PNEUDRI INSTALLE EN AMONT D’UN RESERVOIR D’AIR
“HUMIDE” 57
2 INSTALLATION TYPE A UN SEUL MODULE 58
3 ARMOIRE TRANSFORMATEUR - MODELES MPXE 60
4 ARMOIRE DE COMMANDE - MODELES MPXS 61
TABLE DES MATIERES

4
PNEUDRI MAXI
Instrucciones de instalación y mantenimiento
MODELOS MPXE/MPXS
ÍNDICE NoDE PÁGINA
1 AVISO DE SEGURIDAD 72
2 ESPECIFICACIONES TÉCNICAS A) GENERAL 73
B) DIMENSIONES 74
3 DESEMBALAJE 75 - 75
4 INSTALACIÓN A) LISTA DE COMPROBACIONES PARA INSTALACIÓN 77 - 78
B) UBICACIÓN DEL SISTEMA 79
C) INSTALACIÓN DEL SISTEMA DE FORMA NEUMÁTICA 80 - 81
D) INSTALACIÓN DEL SISTEMA DE FORMA ELÉCTRICA 82
i) MODELOS MPXE 82
ii) MODELOS MPXS 83
iv) CAJA DE CONEXIONES TRASERA MPXE 84
5 PUESTA EN SERVICIO 85
6 MANTENIMIENTO A) PRECAUCIONES DE MANTENIMIENTO 85
B) MANTENIMIENTO DE RUTINA 85
C) INSPECCIÓN DE MANTENIMIENTO 86
D) PLANES DE MANTENIMIENTO 86
E) PLIEGO DE SEGURIDAD DEL DESECANTE 86 - 87
F) ERRORES CONOCIDOS 88 - 89
7 GARANTÍA 93
8 DECLARACIÓN DE CONFORMIDAD Contraportada interior
APÉNDICE A 91 - 92
REGISTRO DE MANTENIMIENTO E INSPECCIÓN
FIGURAS 1 PNEUDRI INSTALADO DESPUÉS DE UN DEPÓSITO
DE AIRE “HÚMEDO” 79
2 INSTALACIÓN TÍPICA DE UN MODULO 80
3 BASTIDOR DEL TRANSFORMADOR - MODELOS MPXE 81
4 BASTIDOR DE CONTROL - MODELOS MPXS 82
ÍNDICE

5
PNEUDRI MAXI
Installatie en onderhoudsaanwijzingen
MODELLEN MPXE/MPXS
INDEX PAGINA
1 VEILIGHEIDSWAARSCHUWING 94
2 TECHNISCHE SPECIFICATIES A) ALGEMEEN 95
B) AFMETINGEN 96
3 UITPAKKEN 97 - 98
4 INSTALLATIE A) CONTROLELIJST VOOR DE INSTALLATIE 99 - 100
B) OPSTELLING VAN UW SYSTEEM 101
C) PNEUMATISCHE INSTALLATIE 102 - 103
D) ELEKTRISCHE INSTALLATIE 104
I) MPXE-MODELLEN 104
ii) MPXS-MODELLEN 105
iv) AANSLUITDOOS ACHTERZIJDE MPXE 106
5 INSTALLATIE 107
6 ONDERHOUD A) VOORZORGSMAATREGELEN BIJ HET ONDERHOUD 107
B) PERIODIEK ONDERHOUD 107
C) ONDERHOUDSINSPECTIE 108
D) ONDERHOUDSSCHEMA’S 108
E) VEILIGHEIDSINFORMATIE DROOGMIDDEL 108 - 109
F) BEKEND FOUTIEF GEBRUIK 110 - 112
7 GARANTIE 115
8 CONFORMITEITSVERKLARING Binnenzijde achterklep
AANHANGSEL A 113 - 114
ONDERHOUDS- EN INSPECTIEGEGEVENS
AFBEELDINGEN 1 PNEUDRI GEÏNSTALLEERD ACHTER “NATTE” WINDKETEL 101
2 TYPISCHE ENKELVOUDIGE OPSTELLING 102
3 TRANSFORMATORBEHUIZING - MPXE-MODELLEN 104
4 BEHUIZING REGELEENHEID - MPXS-MODELLEN 105
INDEX

6
1. SAFETY WARNING!
Do not operate the dryer until the operating instructions for the particular control system and this manual have
been read and understood by all personnel concerned.
It is essential that personnel employ safe working practices and observe all related regulations and legal requirements for
safety when operating the dryer.
When handling, operating or carrying out maintenance on the dryer, personnel must employ safe engineering practices
and observe all relevant local health and safety requirements and regulations. The attention of UK users is drawn to the
Health and Safety at Work Act 1974, and the Institute of Electrical Engineers Regulations.
Most accidents which occur during the operation and maintenance of machinery are the result of failure to observe basic
safety rules or precautions. An accident can often be avoided by recognising a situation that is potentially hazardous.
Improper operation or maintenance of the dryer could be dangerous and result in an accident causing injury or death.
domnick hunter can not anticipate every possible circumstance which may represent a potential hazard. The
WARNINGS in this manual cover the most common potential hazards and are therefore not all-inclusive. If the user
employs an operating procedure, an item of equipment or a method of working which is not specifically recommended by
domnick hunter he must ensure that the dryer will not be damaged or made unsafe and that there is no risk to persons
or property.
Your attention is drawn to the pre-use checklist and commissioning information found within this PNEUDRI Installation
and Maintenance Instructions
IMPORTANT
SAFETY SIGNS
Operations or procedures involving specific hazards which could cause injury or death if precautions are not heeded, are
identified by the following symbols which are displayed on the desiccant air dryer to indicate potential danger points.
CAUTION : RISK OF ELECTRIC SHOCK
WARNING : RISK OF DANGER
CAUTION : RISK OF HIGH PRESSURE
IT IS STRONGLY RECOMMENDED THAT THE OPERATING INSTRUCTIONS FOR THE PARTICULAR CONTROL
SYSTEM AND THESE INSTALLATION AND MAINTENANCE INSTRUCTIONS ARE READ THOROUGHLY BEFORE
PROCEEDING ANY FURTHER.
PLEASE NOTE: YOUR WARRANTY MAY BE INVALIDATED IF THE EQUIPMENT HAS NOT BEEN INSTALLED,
COMMISSIONED OR MAINTAINED BY domnick hunter OR ITS APPROVED AGENTS.

7
2. TECHNICAL SPECIFICATION
Type:
Model:
Outlet Dewpoint:
Air Quality:
(dirt/water/oil):
Maximum Operating Pressure:
Minimum Operating Pressure:
Maximum Inlet Temperature:
Minimum Inlet Temperature:
Regeneration:
Nominal pressure drop
across desiccant bed:
Standard Electrical Supply:
Controls:
Controller:
Noise Level (Average):
Media:
Material:
Construction:
Pre filtration:
After filtration:
A) GENERAL
Heatless
MPXE/MPXS
-40°C (-40°F)
-70°C (-100°F) - optional
ISO 8573.1 Class 1.2.1
Class 1.1.1 optional
13.0 bar g (189 psi g)
4 bar g (58 psi g)
50°C (122°F)
5°C (41°F)
Pressure Swing Adsorption (PSA)
[Air Purge Principle]
140 m bar (2 psi)
115/230V/1ph/50Hz/60Hz
Control equipment 24V ac.
MPXE - electronic with integrated display
MPXS - electronic
<85db (A)
Desiccant
High tensile extruded aluminium coated with Alocrom anti-corrosion
protection and paint finished with an abrasion resistant dry powder epoxy
coating.
PNEUDRI is constructed from extruded aluminium sections connected
together by high tensile bolts i.e. desiccant filled columns are contained
between an upper and lower manifold. The configuration varies between the
heatless and heat regenerative models as shown in figures 1 & 2
Grade AO/AA OIL-X filters
Grade AR OIL-X filter

8
B) DIMENSIONS
1567 814.5 497 3" 635 AR-0430G 3"
(61.5) (32) (19.5) (1397)
1895 1142.5 825 3" 765 AR-0620G 3"
(74.5) (45) (32.5) (1683)
2223 1470.5 1153 4" 895 AR-1000G 4"
(87.3) (58) (45.5) (1969)
2551 1798.5 1143 4" 1025 AR-1000G 4"
(100) (71) (45) (2255)
Dimensions in mm(“) Pipe Wt Recom. Recom. Filter
A B C Con. kg.(lbs) Inlet Filter Outlet Filter Con.
AO-0430G
AA-0430G
AO-0620G
AA-0620G
AO-1000G
AA-1000G
AO-1000G
AA-1000G
MPXE/MPXS 106
MPXE/MPXS 108
MPXE/MPXS 110
MPXE/MPXS 112

9
3. UNPACKING
12
34

10
7
56

11
4. INSTALLATION
A) INSTALLATION CHECKLIST
DO
Ensure PNEUDRI is correctly sized for the inlet pressure, taking into consideration pressure drops caused by
valves, pipes, filters etc. Allowance should be made for purge air loss. The dryer should be typically sized at 1
bar g (14 psi g) below nominal compressor output pressure.
Ensure PNEUDRI is correctly sized for inlet temperature and to meet the dewpoint specified e.g.
-40˚C (-40˚F) or -70˚C (-100˚F) .
A receiver MUST be fitted before PNEUDRI to ensure optimum performance. (Establish the volume flowrate of
compressed air required and calculate variation in air demand to establish the size of air receiver required).
The pipe should predominantly remain at compressor discharge size. On multibank installations, ensure that
dryers are located in an end fed manifold arrangement, as shown below.
Ensure PNEUDRI is securely mounted on a suitably structured, flat and level floor or base which is free from
vibration. It should be secured to the base using bolts located through the slots in the mounting feet.
Ensure that there is sufficient space around the equipment for safety and maintenance, including space for lifting
tackle and loading.
Ensure minimum distance between dryer bank centres is 500mm (19.7”).
Check rating plate for correct supply voltage/frequency.
Electrical isolators should be provided in a safe and accessible place and rated correctly for the power required.
Miniature Circuit Breakers (MCB’s) MUST be used.
The installation should be properly ventilated to allow easy dissipation of generated heat.
Ensure that the correct quality, size and type of filtration equipment is fitted e.g. WS, AO and AA grades before
the dryer and AR grade after the dryer.
All noise considerations should be taken into account when choosing a site for PNEUDRI.
Ensure that water removed by the dryer is allowed for. If the exhaust is to be piped away, ensure adequate pipe
sizes are used e.g. min 100mm (4").
Separate drainage should be fitted to each filter condensate drain and piped away. Ensure that any effluent is
disposed of properly, to conform with legal requirements e.g. H2OIL-X Oil/Water Separator.
INLET LAYOUT
Dryer Dryer Dryer
Flexible
Connection
OUTLET LAYOUT
Dryer Dryer Dryer

12
DO NOT
Install PNEUDRI flat against a wall.
Install PNEUDRI without adequate pre- and after-filtration.
Install multiple banks with less than 750mm (29.5”) between centres (the instrumentation shroud will not
open).
Manifold multiple banks in a centre fed (fork) arrangement, as shown below.
Inlet

13
B) POSITIONING YOUR SYSTEM (See Figure 1)
A typical PNEUDRI installation is illustrated below, where the dryer is sized to match the output of the
compressor and installed downstream of a 'wet' air receiver. Care must be taken to ensure that the dryer
cannot be subjected to flows (even peak flows) in excess of its full rated flow capacity.
As the PNEUDRI is sized to the compressor output, the potential therefore exists for overflowing i.e. the
system can draw volumes of air in excess of the compressor output by also utilising the stored volume in the
air receiver.
To prevent overflow, ensure (where applicable) a Flow Control Device (FCD) is fitted into the outlet flexible
connection. This will indicate via high differential pressure when the dryer is being overflowed.
Figure 1 - PNEUDRI INSTALLED AFTER A ‘WET‘ AIR RECEIVER
In the ideal situation domnick hunter would always recommend a receiver to be fitted both before and after
the PNEUDRI desiccant air dryer.
The dryer should be securely mounted on a suitably structured, flat and level floor or base which is free from
vibration. It should be secured to the ground using bolts located through the slots in the mounting feet.
Ensure there is sufficient space around the dryer(s) and 750mm (29.5”) (minimum distance) between dryer
bank centres.
AR
WS
AO
AA
‘Wet’ Air
Receiver

14
C) INSTALLING YOUR SYSTEM PNEUMATICALLY (See Figure 2)
Install the dryer where the ambient air is as clean as possible and where the air temperature will never exceed
the dryers temperature limits.
PNEUMATIC CONNECTIONS
Connect the Inlet (1) and Outlet (2) compressed air lines to the valve housings marked Inlet and Outlet, ensuring
the protective dust covers fitted to the flanges on the PNEUDRI are removed prior to connection.
MANIFOLD & DRAINS
On installations with fabricated manifolds, an automatic drain valve must be fitted at the lowest point of the inlet
manifold to prevent condensate from entering the dryer.
Figure 2 - TYPICAL SINGLE BANK INSTALLATION
6
2435
1
10
9
7
8
8

15
Recommended inlet and outlet fabricated manifolds to suit each dryer are listed below.
INLET & OUTLET DISTRIBUTION MANIFOLDS
For larger installations please contact domnick hunter
FILTRATION
Ensure PNEUDRI is protected with the correct pre- and after-filtration with the flow directional arrows correctly
aligned with the dryers flow path.
It is recommended that each dryer bank has its own independent filtration. Size 0430 OIL-X filters should be
used on banks of up to and including 6 columns; size 0620 OIL-X filters should be used on banks of 8 columns
& size 1000 OIL-X filters should be used on banks of 10 columns
PRE-FILTRATION
This must be positioned as close to the PNEUDRI inlet as possible. domnick hunter grades ‘AO’ (3) and ‘AA’
(4) pre-filters must be fitted upstream of the inlet to prevent contamination of the desiccant beds.
In cases of extreme contamination, a domnick hunter Water Separator (5) (WS grade) should be incorporated
into the system.
AFTER-FILTRATION
Adomnick hunter grade ‘AR’ (6) filter must be fitted downstream of the dryer to prevent dust carryover. Heat
Regenerative (DHE/DHS Models) must be fitted with high temperature ‘TS’ grade elements.
BYPASS LINE AND VALVE
It should be noted that the use of a bypass line (7) allows wet and untreated air into the system. For continuous
duty, a standby dryer should be installed. Even with multi-bank systems, this means that only one more bank
is required, which offers the benefit of 100% standby.
SHUT-OFF VALVES (ISOLATION)
Shut-off valves (8) must be fitted to the inlet and outlet pipework of each dryer bank and are used during the
“Bring online/Take offline” procedures and during maintenance periods.
MODEL PIPE DIAMETER
MPXE/MPXS 106/108 3"
MPXE/MPXS 110/112 4"
MPXE/MPXS 208 6"
MPXE/MPXS 210/212 8"
MPXE/MPXS 310/312/410/412 10”

D) INSTALLING YOUR SYSTEM ELECTRICALLY
Installation should only be carried out by a qualified electrical engineer.
Ensure that the dryer is connected to a suitably rated AC supply with means of external fused isolation.
The dryer must only be used on alternating current (AC) at the voltage shown on the rating plate (fixed
to the instrumentation shroud) and MUST BE EARTHED.
i) MPXE MODELS
GENERAL
The MPXE range of compressed air dryers have the provision for dual voltage operation at either 110V 50/60Hz
or 230V 50/60Hz. This is not an automatic process and a selector switch in the transformer enclosure must be
set to the correct position before switching on for the first time.
The dryer must be powered from an externally fused electrical supply.
The suggested electrical supply cable is 3 core, 1.5mm2(16AWG).
The dryer must be earthed/grounded.
ELECTRICAL CONNECTION (See Figure 3)
Open the control shroud (9 - Figure 2) and locate the transformer enclosure (See Figure 3 for general
appearance). Remove the four corner screws which retain the clear lid and remove the lid
Remove a blanking grommet from one of the shroud supports and feed the supply cable through and into the
transformer enclosure via the unused cable gland (1).
Connect the cables to the terminals (2) as shown in Figure 3 and ensure the voltage selector switch (3) displays
the correct voltage. Tighten the cable gland (1) and replace the box lid.
OPTIONAL CONNECTION
For remote fault indication a volt free relay is fitted. To access this feature feed the cable through the shroud
support as above and into the transformer enclosure via the unused cable gland (4) after removing the blanking
plug. The connections to the relay are shown in Figure 3. In normal operation, the relay is permanently
energised and will de-energise in the event of a power failure or fault condition. The relay is designed to provide
a fault signal and is rated at 250VAC, 1A maximum.
16
Figure 3 - TRANSFORMER ENCLOSURE - DXE MODELS
CUSTOMERS MAINS
INPUT CABLE
CUSTOMERS
FAULT RELAY
CONNECTIONS
11 COMMON
12 FAULT
14 OK
EARTH / GROUND

ii) MPXS MODELS
GENERAL
The MPXS range of compressed air dryers have the provision for dual voltage operation at either 110V 50/60Hz
or 230V 50/60Hz. This is not an automatic process and the selector switch inside the control enclosure must be
set to the correct position before switching on for the first time.
The dryer must be powered from an externally fused electrical supply.
The suggested electrical supply cable is 3 core 1.5mm2 (16AWG).
The dryer must be earthed/grounded.
ELECTRICAL CONNECTION (See Figure 4)
Open the control shroud (9 - Figure 2) and locate the control enclosure (See Figure 4 for general appearance).
Remove a blanking grommet from one of the shroud supports and feed the main supply cable (1) through so it
exits the dryer body. Connect the cable to a suitable rated AC supply with means of external fused isolation.
OPTIONAL CONNECTION
For remote fault indication, a volt free relay (3) is provided. To access this feature remove the lid. Feed the
cable through the unused hole in a shroud support and through the unused gland (4) into the control enclosure.
Terminate the cable with suitable crimp terminals and connect to the relay to achieve the desired signal. Tighten
the cable gland and replace the box lid.
In normal operation, the relay is permanently energised and will de-energise in the event of a power failure or
fault condition. The relay is designed to provide a fault signal and is rated at 250VAC, 1A maximum.
17
Figure 4 - CONTROL ENCLOSURE - MPXS MODELS
4
2
1
3
ELECTRICAL CONNECTION
Core marked ‘1’ = Live
Core marked ‘2’ = Neutral
Green / Yellow = Earth / Ground
N/C
N/O
2 Fault
3 Okay
4 Common

iv) MPXE REAR JUNCTION BOX
1. Isolate the dryer electrically.
2. Make connections as shown below:-
If a DPE or drain connection is not used, leave the gland blanked off.
3. Connect at DPE’s in accordance with DPE Installation Manual supplied.
4. Connect at Drain Alarm connection in accordance with Condensate Drain Installation Manual supplied.
5. Re-apply power to the dryer.
18
To temperature
sensor
From controller
CONNECTION FROM BOTTOM OF
TERMINALS
1. Ready Made
2. Ready Made
3. Ready Made
4. Ready Made
5. Ready Made
6. Ready Made
7. WS Drain supply
8. AO Drain supply
9. AA Drain supply
10. Ready Made
11. Unused
12. Unused
13. Ready Made
14 Ready Made
CONNECTION FROM TOP OF
TERMINALS
1. Ready Made
2. Ready Made
3. DPE 1 Feedback (AO)
4. DPE 2 Feedback (AA)
5. DPE 3 Feedback (AR)
6. Unused
7. DPE 1 supply (AO)
8. DPE 2 supply (AA)
9. DPE 3 supply (AR)
10. WS Drain Feedback
11. AO Drain Feedback
12. AA Drain Feedback
13. ABV 24VAC
14 ABV Neutral

19
5. COMMISSIONING
6. MAINTENANCE
IMPORTANT INFORMATION CONCERNING THE WARRANTY
Each dryer must undergo a detailed commissioning procedure.
This must be carried out by domnick hunter or an approved engineer from a domnick hunter authorised
distributor.
During commissioning, ensure that the dryer is installed and continuously maintained and operated in the
manner specified in this manual.
N.B. During operation of the Heat Regenerative dryer, the outlet pipework may become too hot to touch.
A) MAINTENANCE PRECAUTIONS
Maintain and keep a written record of all maintenance and repair work carried out on the dryer and its’ auxiliary
equipment (see Appendix A).
The frequency and nature of the work required over a period can reveal adverse operating conditions which
should be corrected.
Ensure that all instructions concerning operating and maintenance are strictly followed, and that the complete
unit, with all accessories and safety devices is kept in good working order.
Maintenance, overhaul and repair work must only be carried out by either domnick hunter or a domnick hunter
authorised distributor.
Before dismantling any part of the dryer ensure that all heavy movable parts are secured.
B) ROUTINE MAINTENANCE
At regular intervals check the following:
(Ensure that all necessary safety precautions are undertaken when working with pressurised components).
1. Dryer and system for leaks.
2. Open kaddis drains on lower manifold, inlet and exhaust valve assemblies, to remove any entrained moisture.
3. Differential pressure indicators and kaddis drains on filters.
4. Exhaust silencer (should be changed when differential pressure exceeds 350 m bar (5 psi) or annually,
whichever is earliest).
5. Inlet and outlet filtration (should be changed when differential pressure exceeds 350 m bar (5 psi) or annually,
whichever is earliest).
6. Use only GENUINE domnick hunter spare parts.