Specifications

FM774/0708 BOOK 2 33
CM, V, VS, E, EC (TEKELEK) SERIES FAULT FINDING
WATER FAULTS
FAULT Ref CAUSE ACTION
5. WATER NOT ENTERING
UNIT
5.1 Mains isolation tap closed. Open tap.
5.2 Solenoid mesh strainer blocked. Remove solenoid, clean mesh
strainer and check water quality.
5.3 Solenoid coil open circuit or failed. Replace solenoid.
5.4 No 240v off board to transformer. Replace roof unit.
5.5 No 24v to MWL. Replace transformer.
5.6 No 24v to solenoid. Replace MWL.
5.7 Pressure lock between solenoid
& non-return type isolator valve.
Relieve pressure and fit standard
isolation tap.
6. WATER CONTINUALLY
RUNNING FROM UNIT
6.1 Correct operation for bleed-off is a
slow trickle.
Ensure bleed-off rate set as required.
6.2 Water level set too high. Adjust float valve setting.
6.3 Mains water pressure too low to op-
erate hydraulic drain valve.
Suggest bleed-off system be used.
6.4 Hydraulic Drain Valve seeps some
water during operation.
If leaking is excessive or valve body
cracked replace.
6.5 Solenoid leaking due to failed
diaphragm coil.
Replace solenoid.
6.6 Float Valve or diaphragm failed. Replace diaphragm or float valve.
6.7 Counterweight Drain Valve
a) Leaking from hoses or plastic
clips
Replace plastic clips (SP2041) or
hoses kit (SP2042).
Do not re-use clips.
b) Hoses incorrectly connected
(Refer to page 39)
Replace hoses kit (SP2042).
c) Physical or mechanical
impairment of drain valve body
Replace drain valve (SP2040).
6.8 Square section blue ‘O’ ring faulty. Replace ‘O’ ring.
7. WATER NOT DRAINING
FROM UNIT AT SHUT DOWN
7.1 Correct operation for bleed-off unit. Ensure bleed-off rate is set as
required.
7.2 Faulty Hydraulic Drain Valve. Replace Drain Valve.
7.3 Counterweight Drain Valve
a) Stuck in closed position
Replace drain valve (SP2040).
b) Blockage in components Replace drain valve (SP2040).
8. WATER NOT
CIRCULATING
8.1 Pump failure. Replace pump.
8.2 Pump strainer basket clogged. Remove & clean strainer basket.
8.3 Water distribution manifold blocked. Remove & flush manifold of any
blockages.