Eaton PH1, Technical Manual

1

AlArm pull stAtion - pH1

   TM230 Issue F   July 2019   www.eaton.com

Alarm pull station - PH1

English

1.0 Introduction

These manual fire alarm pull stations have been designed 

for use in hazardous locations and harsh environmental 

conditions. The GRP enclosures are suitable for use 

offshore or onshore where light weight combined with a 

high level of corrosion resistance is required.

2.0 General safety messages and 

warnings

All instructions and safety messages in this manual must 

be followed to allow safe installation of the device. The 

device must only be installed and maintained by correctly 

trained site personnel/installers.

I.  To reduce the risk of ignition of hazardous 

atmospheres and shock, do not apply power to the 

device until installation has been completed and the 

device is fully sealed and secured.

II.  To reduce the risk of ignition of hazardous 

atmospheres and shock, keep device tightly closed 

when the circuit is energised.

III.  Before removing the cover for installation or 

maintenance, ensure that the power to the device 

is isolated.

IV.  Following installation, test the device to ensure 

correct operation.

V.  Following installation ensure a copy of this manual is 

made available to all operating personnel.

VI.  When installing the device, requirements for 

selection, installation and operation should be 

referred to e.g. IEE Wiring Regulations and the 

‘National Electrical Code’ in North America. Additional 

national and/or local requirements may also apply.

VII.  Cable termination should be in accordance with 

specification applying to the required application. 

MEDC recommends that all cables and cores should 

be correctly identified. Please refer to the wiring 

diagram in this manual (or separate diagram provided 

with the unit).

VIII. Ensure that only the correct listed or certified cable 

glands are used and that the assembly is shrouded 

and correctly earthed.

IX.  Ensure that only the correct listed or certified 

stopping plugs are used to blank off unused gland 

entry points and that the NEMA/IP rating of the unit 

is maintained.

X.  MEDC recommend the use of a sealing compound 

such as HYLOMAR PL32 on the threads of all glands 

and stopping plugs in order to maintain the IP rating 

of the unit.

XI.  The internal earth terminal, where fitted, must be 

used for the equipment grounding and the external 

terminal, if available, is for a supplementary bonding 

connection where local codes or authorities permit or 

require such a connection.

XII.  When installing the device, MEDC recommends the 

use of stainless steel fasteners. Ensure that all nuts, 

bolts and fixings are secure.

XIII. The pull station should not be mounted closer than 

40mm to any solid object which does not form part 

of the unit.

XIV. When fitting or removing cable entry glands, the 

cable entry inserts must be held with a suitable tool 

to prevent movement.

3.0 Installation

The unit is mounted via 4 off Ø6.5mm fixing holes in the 

base of the enclosure. The unit has been designed and 

certified to operate at any attitude.

The fixing holes have been designed to accept an M6 

screw or bolt.

Access to terminals

Unscrew the 4 off M6 screws (5.0mm A/F hexagon 

key) holding the cover assembly to the base. The cover 

screws are retained in the cover assembly for ease of 

installation. Gently lift the cover assembly away from the 

base of the enclosure to gain access to the interior.
Once termination is complete, carefully replace the cover 

assembly back onto the base of the enclosure, avoiding 

damage to the mating surfaces. Ensure the o-ring is 

correctly seated in its groove during re-assembly. Evenly 

tighten the 4 off M6 screws (5.0mm A/F hexagon key). 

Ensure the required gap (0.10mm Max.) is maintained 

between the cover and the base.