Calpeda Unimat-E Series, Installation, Operation & Maintenance Instructions Manual

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8 MAINTENANCE
8.11 Routine maintenance & service checks:
Every 6 & 12 months (see service log sheets below) the unit should be
inspected for:-

Damage to the electrical supply cable.

Damage to the inlet and outlet flexible hoses.

Leakage from the unit or the connecting pipework.

Controller log check; fault codes, pump run times, etc.

Test unit operation

Float valve check

Level probe check

Water condition check

Expansion vessel pre-charge check
8.12 Wiring diagram
There are no user servicable wiring or components inside the controller
assembly. DO NOT remove the retaining screws or the membrane cover over
the display.
8.13 Spares
The unit is designed and built to be a reliable and high quality product,
in the event of spares being required please contact Calpeda Ltd on
01869 241441.
230 VAC/1PH/50Hz
SUPPLY
N
E
L
MAIN WINDING
THERMOTRIP
START WINDING
BLUE
BROWN
MOTOR 2
THERMOTRIP
BLUE
BROWN
MOTOR 1
PRESSURE TRANSDUCER
4-20mA, 0 - 10 bar
COMMON
LOW LEVEL
HIGH LEVEL
GREEN/YELLOW
GREEN/YELLOW
L E N
L E N
VO
LT
FR
EE
A
LA
RM CO
NT
AC
TS
- 5 A
MP
MA
X.
RS 485 modbus
LOW PRESSURE ALARM N/O
HIGH PRESSURE ALARM N/O
BOILER INTERLOCK N/O
COMMON ALARM N/O
GREEN/YELLOW
BLUE
BROWN
RED GR
EE
N
BLUE
C L1 L2
- +
CAPACITOR
BLAC
K
BLU
E
MAIN WINDING
START WINDING
CAPACITOR
BLA
CK
BLUE
2
1
BR
OWN
BLUE
TANK
1
2
3
4
Fig. 25