MDV HM/II-130S, Service Manual

Page: 17 / 18

MCAC-ATSM-2014-11 Hydraulic Module 50Hz
17
(1). Power supply of the unit must be connected (switching-on) strictly on the basis of electric requirements. Please
don’t share
power lines with other appliances.
(2). Please ensure that the unit is reliably grounded, prevent leakage accidents when installing.
(3). Operating power supply
◆
Allow voltage range: rated voltage ±10%
◆
Allow frequency range
：
Rated frequency ±2%
◆
Allow three-phase voltage unbalance
：
±2.25%
◆
Allow three current imbalance: ± 5%
(4). Power supply of unit distribution (the distribution of the unit) must be connected strictly on the basis of Hydraulic module
circuit diagram in order to ensure proper operation.
User connecting: 1, 2, 3, 4, all of others are wired in plant (Please refer to the wiring diagram on page 9).
(5). Electric parameter of the unit nameplates is the quantitative value under standard running conditions. The selection of
miniature circuit breaker, AC contactor, wiring capacity and so on has been considered while the module is operating under the
harsh conditions.
(6). System control consists of electric control cabinet, temperature sensor, flow switch and so on.
(7). Control box can realize linkage and connected controlling through active contact, passive contact and any kind of central
air-conditioner main unit
. What’s more, it can control the operation of corresponding pump and fan by receiving operation signal.
14.6 Starting- up the first time
(1)Preparation
○
1 Check the status of all valves.
○
2 Check whether the water is full.
○
3 Check all wiring is correct.
(2). Starting-up and checking
◆
Switch on general power supply.
◆
Check whether the units' phase sequence is correct.
1 2 3
5 6 7 8 9 10
4
No. Content
1,2,3,4 Power input
5,6 Pump ON/OFF signal input
7,8 Water flow ON/OFF signal output
9,10 Alarm ON/OFF signal output