RESTRICTION INDICATORS AND ADAPTORS
RESTRICTION INDICATORS
Restriction indicators are used to indicate when an Air Cleaner should be serviced. The Restriction Indicator flags red and remains so even when the engine is switched off to denote the end of the useful service life of a filter element. The Indicator can be re-set after element servicing by depressing the top of the unit. Typically, such indicators are mounted directly to an Air Cleaner or remotely installed on the inlet ducting using one of the adaptors described below.
FILTER MONITORS
The Filter Monitor automatically and continuously monitors the condition of the Air Filter by showing in graduated readings how much element service life has been used and more importantly, how much element service life remains. It does this by measuring the actual maximum restriction of the Air Cleaner when the engine is operating under full load and "locks up" against a graduated scale of restriction enabling the remaining element service life to be read - even after the engine has been stopped.
Such Indicators or Filter Monitors must not be installed on the engine side of a blower or Turbo charger.

STANDARD PRE-SET INDICATORS
| Part No. | Preset to |
| RG1381 | 381mm (15") H20 |
| RG1508 | 508mm (20") H20 |
| RG1559 | 559mm (22") H20 |
| RG1635 | 635mm (25") H20 |
| RG1762 | 762mm (30") H20 |
| RG1635EP Electrical * |
635mm (25") H20 |
* Note: Requires connector and 150mm flying lead assembly - Part No. PT12231
FILTER MONITORS
| Part No. | Preset to |
| FM1015 | 125-381mm (5"-15") H20 |
| FM1025 | 203-635mm (8"-25") H20 |
ADAPTORS
Restriction Indicator Adaptors are available to facilitate bulkhead or instrument panel mounting in conjunction with any reasonable length of rubber or plastic tubing whilst others are used where the direct mounting of the indicator is required. Those fitted with safety filters dampen pulsations and prevent the entry of dust should the indicator be removed or damaged.
Threaded adaptors are all 1/8 (one eighth) NPT. All dimensions in millimetres.
DU279/1
Manifold Adaptor
For brazing into manifold or trunking. Used for direct mount of Restriction Indicator.
PT6857
Manifold Adaptor
For direct mounting of indicator into tapped hole in manifold.
DU2146
Cleaner Conversion Adaptor
When fitted to Air Cleaner tapping point this adaptor converts direct mount to remote type fixing.
PT7652
Manifold Adaptor
For remote mounting, brazed into manifold or trunking.
PT7675
Dashboard Adaptor
For remote mounting of indicator to dashboard or bulkhead.
PRE-CLEANERS
EJECTOR TYPE PRE-CLEANER
Used to reduce the frequency of service of all types of Air Cleaners where extremely dusty conditions are encountered.
FEATURES
Steel construction
Large dust particles automatically ejected into atmosphere
Supplied in a high performance black finish
| Part No. | To Suit Tube Dia. (mm) | Dimensions (mm) | Outlet Style | |
| A | B | |||
| PC0602 | 64.5 | 160.0 | 184.0 | Slotted Outlet Tube |
| PC0705 | 77.0 | 160.0 | 177.0 | Slotted Outlet Tube |
| PC0706 | 76.0 | 160.0 | 162.0 | - |
FULL VIEW PRE-CLEANER
This style has a visible plastic bowl which collects dust and can be removed for cleaning.
FEATURES
Metal and plastic construction
Easily serviced and no tools required
Supplied in a high performance black finish

| Part No. | To Suit Tube Dia. (mm) | Dimensions (mm) | Outlet Style | |
| A | B | |||
| PC0502 | 58.0 | 187.0 | 264.0 | Tapered Outlet Tube |
| PC0701 | 76.0 | 187.0 | 157.0 | Tapered Outlet Tube |
| PC0702 | 77.0 | 187.0 | 213.0 | Tapered Outlet Tube |
ROTARY EJECTOR TYPE PRE-CLEANER

For full details and information, contact our Technical Sales Department.